Lediga jobb som Produktionstekniker hos Blykalla AB

• (2 st) Senior Nuclear Safety Engineer

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 31 juli (8 dagar kvar)

  Publicerad: 2026-05-27

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  About the job

  What we do at Blykalla

  Blykalla is a Swedish deep-tech company at the forefront of the nuclear industry, pioneering the development of small modular reactors that provide clean, safe, and reliable energy. Thanks to lead-cooling, we achieve high safety in a very compact format, allowing for a simple and cost-effective design that can be mass-produced. Our unique reactor design will provide safe and green baseload energy that perfectly complements solar and wind power .

  
  

  What you'll get to do

  We're seeking an experienced Nuclear Safety Engineer within deterministic safety analysis to join our Nuclear Engineering & Safety team in Stockholm. In this role, you will analyze the safety case for our lead-cooled fast reactor designs, using deterministic methods on transient and accident conditions. An important part of the job is to document your work with the aim of supporting regulatory interactions, thereby ensuring that our SMRs meet and demonstrate the highest level of nuclear safety throughout design, licensing, and deployment. More specifically, you will:

  • Develop and maintain the deterministic safety analysis case for our cutting-edge lead-cooled fast reactor designs
  • Perform simulation and analysis of transient and accident conditions using computer codes such as Bella, Apros and Spectra, as well as fuel performance and/or CFD tools, depending on skills and interest.
  • Develop and maintain a transparent and efficient ecosystem of computer codes, plant models, verification & validation cases and all associated documentation.
  • Prepare safety analysis reports and technical submittals for regulatory review
  • Stay current with advances in safety methodologies, computer codes, regulatory requirements, and international standards

  
  

  Who'll you'll get to work with

  The Nuclear Safety & Licensing Engineer sits in the Nuclear Engineering & Safety team within Blykalla, and reports to the manager of Nuclear Engineering & Safety. We are a diverse team that is passionate about our work and our company. Cross-functional interaction with the fuel performance team will be an important part of your job.

  Who you are

  You will be part of a highly skilled team with a can-do attitude. We value personnel chemistry and strive to create a workplace where you enjoy coming to. There are however a few things that we think will help in order for you to succeed in this role, these are:

  • Master's degree in engineering, physics, or related field
  • 5-10 years of experience in deterministic safety analysis for any commercial reactor types
  • Strong understanding of reactor safety principles, defense-in-depth, transients and accident phenomenology
  • Familiarity with regulatory frameworks (SSM, NRC, IAEA, or equivalent) and licensing processes
  • Excellent analytical, problem-solving, and technical writing skills
  • Fluent in English, spoken and written
  • Fluency in Swedish, spoken and written

  If you are not sure that you are 100% qualified but are up to the challenge, we encourage you to apply.

  Location

  This position is for our office in Stockholm.

  So, what do you think?

  Don't miss the chance to be at the forefront of revolutionizing nuclear power. Join our team as a Nuclear Safety Engineer and help shape the energy landscape of tomorrow. Apply today with your resume and a cover letter highlighting your relevant experience and achievements.

  We are proud to foster an inclusive workplace free from discrimination. We strongly believe that diversity of experience, perspectives, and background will lead to a better environment for our employees and a better product. This is something we value deeply and we encourage everyone to be a part of changing the way the world thinks about power supply!

  We do not accept applications via email.

  We are not open to external help from recruitment agencies.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Ansökan

  Ansök senast 31 juli (8 dagar kvar)

  Ansök här

  Visa mer

• (2 st) Senior Mechanical Design Engineer

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 30 juli (7 dagar kvar)

  Publicerad: 2026-05-15

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  
  

  What we do at Blykalla

  Blykalla is a Swedish deep-tech company at the forefront of the nuclear industry, pioneering the development of small modular reactors that provide clean, safe, and reliable energy. Thanks to lead-cooling, we achieve high safety in a very compact format, allowing for a simple and cost-effective design that can be mass-produced. Our unique reactor design will provide safe and green baseload energy that perfectly complements solar and wind power.

  
  

  Are you a skilled mechanical engineer with a passion for solving complex design challenges? Do you enjoy hands-on engineering work in a fast-paced environment where your contributions have real impact? Join Blykalla, Sweden's pioneer in next-generation nuclear energy, as a Senior Mechanical Design Engineer.

  What you’ll get to do

  As a Senior Mechanical Design Engineer, you will work as a key technical contributor in the design, analysis, and development of mechanical systems for our SMRs. The role is strongly hands-on and focused on detailed mechanical design, engineering analysis, and close collaboration with colleagues across disciplines. You will thrive in this role if you:

  • Enjoy deep technical work and hands-on mechanical design.
  • Take ownership of your deliverables and see them through to completion.
  • Question assumptions and continuously seek better engineering solutions.
  • Are comfortable working in an agile, fast-moving environment.
  • Value open, respectful communication and teamwork.

  Key Responsibilities

  • Design and develop mechanical components and systems for SMR applications, from concept through detailed design.
  • Produce detailed 3D CAD models, drawings, and technical documentation.
  • Interpret, implement, and trace requirements throughout the design process.
  • Critically evaluate results from mechanical, thermal, and fluid analyses and iterate designs accordingly.
  • Support prototyping, testing, and design verification activities.
  • Collaborate with R&D, safety, and manufacturing teams to ensure robust and compliant designs.
  • Ensure designs meet applicable industry standards, safety requirements, and quality processes.
  • Communicate technical progress and design decisions within project teams.

  Who’ll you’ll get to work with

  The Senior Mechanical Design Engineer sits in the engineering team within Blykalla, and reports to the Mechanical Engineering Manager. We are a diverse team that is passionate about our work and Blykalla.

  Who you are

  You will be part of a highly skilled engineering team with a strong sense of ownership and curiosity. To succeed in this role, we believe you bring the following:

  Required:

  • Bachelor's or Master's degree in Mechanical Engineering or a related field.
  • 8 or more years of experience in mechanical design engineering, with a strong focus on 3D CAD and design of large-scale components.
  • Broad mechanical engineering expertise spanning design and manufacturing.
  • Experience working in regulated industries with structured engineering processes, safety regulations, and quality requirements.
  • Strong problem-solving skills and attention to detail.
  • Excellent communication and collaboration skills.
  • Fluency in spoken and written English.

  Considered a merit:

  • Experience from the nuclear industry, including familiarity with nuclear codes and standards (e.g. ASME, RCC) and nuclear quality assurance processes.
  • Experience with FEM simulations and/or thermal or fluid simulations (CFD).
  • Experience with risk assessment methods such as FMEA.
  • Fluency in Swedish.

  
  

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Ansökan

  Ansök senast 30 juli (7 dagar kvar)

  Ansök här

  Visa mer

• Fuel Performance Lead

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 20 augusti (28 dagar kvar)

  Publicerad: 2026-07-21

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  Help Us Prove a New Standard in Nuclear Fuel

  Are you a technically sharp, self-driven engineer or scientist who understands how nuclear fuel really behaves - and how to prove it with credible models? Join Blykalla and lead the fuel development and qualification effort that underpins the use of a novel nuclear fuel in an advanced reactor. This role puts you at the center of predicting, validating, and defending fuel behaviour for the western world’s first lead-cooled SMR. You’ll own the delivery of the fuel qualification programme, and strongly influence the development of models and codes that allow for producing regulator-ready evidence to understand our fuel performance.

  
  

  What we do at Blykalla At Blykalla

  we are developing the next generation of nuclear technology with our Advanced Small Modular Reactor (SMR), based on uranium nitride fuel and a compact, lead-cooled design. As Sweden’s only SMR developer, we are on a mission to decarbonize heavy industry and other energy-intensive sectors and deliver safe, scalable, and sustainable energy.

  What you’ll get to do Your mission is to ensure that we can predict, explain and justify fuel behaviour with confidence, using validated models, defensible assumptions and traceable data. Build & evolve fuel performance models

  ● Take ownership of the development, extension, and adaption of fuel performance models for a lead-cooled fast-spectrum operation, with a focus on physical mechanisms rather than black-box use.

  ● Lead the benchmarking of models against multiple fuel types (including nitride, oxide and metallic fuels) and fuel performance codes, to support comparison, validation, and fallback options. ● Understand and improve model behaviour by analysing why models work, where they break down, and what must be changed for lead-cooled fast spectrum operation.

  ● Work closely with experimental and design teams to specify experimental testing (in- and out-of-pile) and examinations that generate data relevant for model validation or development. Shape data, experiments, and model credibility

  ● Define what experimental and operational data are needed to support, challenge, and improve fuel performance models

  ● Work closely with experimental and design teams to specify irradiation tests and pre- and post-irradiation examinations that generate data relevant for model validation or development

  ● Integrate data from experiments, literature, and historical programmes to calibrate models, assess validity ranges, and reduce key uncertainties

  ● Contribute to cross-disciplinary activities between reactor physics, thermal hydraulics, materials, backend, safety and licensing to ensure design coherence, manufacturability, and regulatory compliance. Align modelling with fuel qualification, licensing and industrialisation

  ● In collaboration with the Head of Fuel and wider fuel team, drive forward the company's advanced fuel qualification and update our plans for how the company will meet them.

  ● Define, maintain and own the modelling basis used in fuel qualification, including scope, gaps, assumptions, acceptance criteria, and regulatory expectations

  ● Coordinate with international labs and irradiation facilities to secure the knowledge and services (irradiation, PIE) needed to reach qualification and licensing goals.

  ● Ensure Blykalla is pro-active in interfacing with regulatory bodies and relevant programs that support advanced fuel qualification/performance modelling (including, but not limited to: SSM, DOE/NRC and IAEA).

  ● Contribute to the establishment of modelling workflows, documentation, and quality practices that ensure traceability, reproducibility, and regulatory readiness Fuel Design & Development

  ● With the Head of Fuel and Head of Nuclear Safety, coordinate cross-disciplinary integration of the fuel design between nuclear design, thermal-hydraulics, materials group, fuel experimental and modelling teams to ensure design coherence, consistent modelling assumptions, manufacturability, and regulatory compliance." Technical leadership

  ● With the Head of Fuel, support the transfer of knowledge and development of the next generation of “subject matter experts” across both fuel performance authorities or cross-disciplinary technical leadership.

  ● Provide technical mentorship to early career individuals, disseminating your experience and knowledge. Experience & Qualifications

  ● At least 15-years post-degree experience in nuclear fuel modelling, development and/or qualification.

  ● Modelling and simulation experience covering code/model modification, development or critical assessment rather than “black-box” use

  ● Degree, ideally PhD in nuclear engineering, physics, chemistry or a closely related field

  ● Experience defining and integrating experimental data from irradiation tests, post-irradiation examinations, literature, or historical programmes to support and improve modelling and accelerate fuel qualification

  ● Ability to define what data and experiments are needed to support model credibility and uncertainty reduction, and to work effectively with experimental and qualification teams

  ● Demonstrated ability to understand fuel behaviour at the mechanism level and to diagnose why models work, where they fail, and how they must be improved

  ● Hands-on experience with fuel performance codes such as TRANSURANUS, FRAPCON/FRAPTRAN, BISON, or similar tools, including extending, adapting, or validating models

  ● Understanding of how modelling contributes to fuel qualification, safety arguments, and regulatory submissions

  ● Ability to communicate and defend modelling assumptions, limitations, and results in technical discussions with regulators, authorities, and partners

  ● Fluency in English; Swedish is an advantage

  ● Willingness to travel within Europe, North America and occasionally beyond

  ● Eligibility to work with nuclear materials in Sweden Location The position is based in Stockholm. Travel to partner sites and research facilities will be part of the role.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Webbplats: https://careers.blykalla.com/jobs/8103812-fuel-performance-lead
  

  Ansökan

  Ansök senast 20 augusti (28 dagar kvar)

  Ansök här

  Visa mer

• Fuel Performance Lead

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 20 augusti (28 dagar kvar)

  Publicerad: 2026-07-21

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  Help Us Prove a New Standard in Nuclear Fuel

  Are you a technically sharp, self-driven engineer or scientist who understands how nuclear fuel really behaves - and how to prove it with credible models? Join Blykalla and lead the fuel development and qualification effort that underpins the use of a novel nuclear fuel in an advanced reactor. This role puts you at the center of predicting, validating, and defending fuel behaviour for the western world’s first lead-cooled SMR. You’ll own the delivery of the fuel qualification programme, and strongly influence the development of models and codes that allow for producing regulator-ready evidence to understand our fuel performance.

  
  

  What we do at Blykalla At Blykalla

  we are developing the next generation of nuclear technology with our Advanced Small Modular Reactor (SMR), based on uranium nitride fuel and a compact, lead-cooled design. As Sweden’s only SMR developer, we are on a mission to decarbonize heavy industry and other energy-intensive sectors and deliver safe, scalable, and sustainable energy.

  What you’ll get to do Your mission is to ensure that we can predict, explain and justify fuel behaviour with confidence, using validated models, defensible assumptions and traceable data. Build & evolve fuel performance models

  ● Take ownership of the development, extension, and adaption of fuel performance models for a lead-cooled fast-spectrum operation, with a focus on physical mechanisms rather than black-box use.

  ● Lead the benchmarking of models against multiple fuel types (including nitride, oxide and metallic fuels) and fuel performance codes, to support comparison, validation, and fallback options. ● Understand and improve model behaviour by analysing why models work, where they break down, and what must be changed for lead-cooled fast spectrum operation.

  ● Work closely with experimental and design teams to specify experimental testing (in- and out-of-pile) and examinations that generate data relevant for model validation or development. Shape data, experiments, and model credibility

  ● Define what experimental and operational data are needed to support, challenge, and improve fuel performance models

  ● Work closely with experimental and design teams to specify irradiation tests and pre- and post-irradiation examinations that generate data relevant for model validation or development

  ● Integrate data from experiments, literature, and historical programmes to calibrate models, assess validity ranges, and reduce key uncertainties

  ● Contribute to cross-disciplinary activities between reactor physics, thermal hydraulics, materials, backend, safety and licensing to ensure design coherence, manufacturability, and regulatory compliance. Align modelling with fuel qualification, licensing and industrialisation

  ● In collaboration with the Head of Fuel and wider fuel team, drive forward the company's advanced fuel qualification and update our plans for how the company will meet them.

  ● Define, maintain and own the modelling basis used in fuel qualification, including scope, gaps, assumptions, acceptance criteria, and regulatory expectations

  ● Coordinate with international labs and irradiation facilities to secure the knowledge and services (irradiation, PIE) needed to reach qualification and licensing goals.

  ● Ensure Blykalla is pro-active in interfacing with regulatory bodies and relevant programs that support advanced fuel qualification/performance modelling (including, but not limited to: SSM, DOE/NRC and IAEA).

  ● Contribute to the establishment of modelling workflows, documentation, and quality practices that ensure traceability, reproducibility, and regulatory readiness Fuel Design & Development

  ● With the Head of Fuel and Head of Nuclear Safety, coordinate cross-disciplinary integration of the fuel design between nuclear design, thermal-hydraulics, materials group, fuel experimental and modelling teams to ensure design coherence, consistent modelling assumptions, manufacturability, and regulatory compliance." Technical leadership

  ● With the Head of Fuel, support the transfer of knowledge and development of the next generation of “subject matter experts” across both fuel performance authorities or cross-disciplinary technical leadership.

  ● Provide technical mentorship to early career individuals, disseminating your experience and knowledge. Experience & Qualifications

  ● At least 15-years post-degree experience in nuclear fuel modelling, development and/or qualification.

  ● Modelling and simulation experience covering code/model modification, development or critical assessment rather than “black-box” use

  ● Degree, ideally PhD in nuclear engineering, physics, chemistry or a closely related field

  ● Experience defining and integrating experimental data from irradiation tests, post-irradiation examinations, literature, or historical programmes to support and improve modelling and accelerate fuel qualification

  ● Ability to define what data and experiments are needed to support model credibility and uncertainty reduction, and to work effectively with experimental and qualification teams

  ● Demonstrated ability to understand fuel behaviour at the mechanism level and to diagnose why models work, where they fail, and how they must be improved

  ● Hands-on experience with fuel performance codes such as TRANSURANUS, FRAPCON/FRAPTRAN, BISON, or similar tools, including extending, adapting, or validating models

  ● Understanding of how modelling contributes to fuel qualification, safety arguments, and regulatory submissions

  ● Ability to communicate and defend modelling assumptions, limitations, and results in technical discussions with regulators, authorities, and partners

  ● Fluency in English; Swedish is an advantage

  ● Willingness to travel within Europe, North America and occasionally beyond

  ● Eligibility to work with nuclear materials in Sweden Location The position is based in Stockholm. Travel to partner sites and research facilities will be part of the role.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Webbplats: https://careers.blykalla.com/jobs/8103812-fuel-performance-lead
  

  Ansökan

  Ansök senast 20 augusti (28 dagar kvar)

  Ansök här

  Visa mer

• Fuel Performance Lead

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 20 augusti (28 dagar kvar)

  Publicerad: 2026-07-21

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  Help Us Prove a New Standard in Nuclear Fuel

  Are you a technically sharp, self-driven engineer or scientist who understands how nuclear fuel really behaves - and how to prove it with credible models? Join Blykalla and lead the fuel development and qualification effort that underpins the use of a novel nuclear fuel in an advanced reactor. This role puts you at the center of predicting, validating, and defending fuel behaviour for the western world’s first lead-cooled SMR. You’ll own the delivery of the fuel qualification programme, and strongly influence the development of models and codes that allow for producing regulator-ready evidence to understand our fuel performance.

  
  

  What we do at Blykalla At Blykalla

  we are developing the next generation of nuclear technology with our Advanced Small Modular Reactor (SMR), based on uranium nitride fuel and a compact, lead-cooled design. As Sweden’s only SMR developer, we are on a mission to decarbonize heavy industry and other energy-intensive sectors and deliver safe, scalable, and sustainable energy.

  What you’ll get to do Your mission is to ensure that we can predict, explain and justify fuel behaviour with confidence, using validated models, defensible assumptions and traceable data. Build & evolve fuel performance models

  ● Take ownership of the development, extension, and adaption of fuel performance models for a lead-cooled fast-spectrum operation, with a focus on physical mechanisms rather than black-box use.

  ● Lead the benchmarking of models against multiple fuel types (including nitride, oxide and metallic fuels) and fuel performance codes, to support comparison, validation, and fallback options. ● Understand and improve model behaviour by analysing why models work, where they break down, and what must be changed for lead-cooled fast spectrum operation.

  ● Work closely with experimental and design teams to specify experimental testing (in- and out-of-pile) and examinations that generate data relevant for model validation or development. Shape data, experiments, and model credibility

  ● Define what experimental and operational data are needed to support, challenge, and improve fuel performance models

  ● Work closely with experimental and design teams to specify irradiation tests and pre- and post-irradiation examinations that generate data relevant for model validation or development

  ● Integrate data from experiments, literature, and historical programmes to calibrate models, assess validity ranges, and reduce key uncertainties

  ● Contribute to cross-disciplinary activities between reactor physics, thermal hydraulics, materials, backend, safety and licensing to ensure design coherence, manufacturability, and regulatory compliance. Align modelling with fuel qualification, licensing and industrialisation

  ● In collaboration with the Head of Fuel and wider fuel team, drive forward the company's advanced fuel qualification and update our plans for how the company will meet them.

  ● Define, maintain and own the modelling basis used in fuel qualification, including scope, gaps, assumptions, acceptance criteria, and regulatory expectations

  ● Coordinate with international labs and irradiation facilities to secure the knowledge and services (irradiation, PIE) needed to reach qualification and licensing goals.

  ● Ensure Blykalla is pro-active in interfacing with regulatory bodies and relevant programs that support advanced fuel qualification/performance modelling (including, but not limited to: SSM, DOE/NRC and IAEA).

  ● Contribute to the establishment of modelling workflows, documentation, and quality practices that ensure traceability, reproducibility, and regulatory readiness Fuel Design & Development

  ● With the Head of Fuel and Head of Nuclear Safety, coordinate cross-disciplinary integration of the fuel design between nuclear design, thermal-hydraulics, materials group, fuel experimental and modelling teams to ensure design coherence, consistent modelling assumptions, manufacturability, and regulatory compliance." Technical leadership

  ● With the Head of Fuel, support the transfer of knowledge and development of the next generation of “subject matter experts” across both fuel performance authorities or cross-disciplinary technical leadership.

  ● Provide technical mentorship to early career individuals, disseminating your experience and knowledge. Experience & Qualifications

  ● At least 15-years post-degree experience in nuclear fuel modelling, development and/or qualification.

  ● Modelling and simulation experience covering code/model modification, development or critical assessment rather than “black-box” use

  ● Degree, ideally PhD in nuclear engineering, physics, chemistry or a closely related field

  ● Experience defining and integrating experimental data from irradiation tests, post-irradiation examinations, literature, or historical programmes to support and improve modelling and accelerate fuel qualification

  ● Ability to define what data and experiments are needed to support model credibility and uncertainty reduction, and to work effectively with experimental and qualification teams

  ● Demonstrated ability to understand fuel behaviour at the mechanism level and to diagnose why models work, where they fail, and how they must be improved

  ● Hands-on experience with fuel performance codes such as TRANSURANUS, FRAPCON/FRAPTRAN, BISON, or similar tools, including extending, adapting, or validating models

  ● Understanding of how modelling contributes to fuel qualification, safety arguments, and regulatory submissions

  ● Ability to communicate and defend modelling assumptions, limitations, and results in technical discussions with regulators, authorities, and partners

  ● Fluency in English; Swedish is an advantage

  ● Willingness to travel within Europe, North America and occasionally beyond

  ● Eligibility to work with nuclear materials in Sweden Location The position is based in Stockholm. Travel to partner sites and research facilities will be part of the role.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Webbplats: https://careers.blykalla.com/jobs/8103812-fuel-performance-lead
  

  Ansökan

  Ansök senast 20 augusti (28 dagar kvar)

  Ansök här

  Visa mer

• Fuel Performance Lead

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 20 augusti (28 dagar kvar)

  Publicerad: 2026-07-21

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  Help Us Prove a New Standard in Nuclear Fuel

  Are you a technically sharp, self-driven engineer or scientist who understands how nuclear fuel really behaves - and how to prove it with credible models? Join Blykalla and lead the fuel development and qualification effort that underpins the use of a novel nuclear fuel in an advanced reactor. This role puts you at the center of predicting, validating, and defending fuel behaviour for the western world’s first lead-cooled SMR. You’ll own the delivery of the fuel qualification programme, and strongly influence the development of models and codes that allow for producing regulator-ready evidence to understand our fuel performance.

  
  

  What we do at Blykalla At Blykalla

  we are developing the next generation of nuclear technology with our Advanced Small Modular Reactor (SMR), based on uranium nitride fuel and a compact, lead-cooled design. As Sweden’s only SMR developer, we are on a mission to decarbonize heavy industry and other energy-intensive sectors and deliver safe, scalable, and sustainable energy.

  What you’ll get to do Your mission is to ensure that we can predict, explain and justify fuel behaviour with confidence, using validated models, defensible assumptions and traceable data. Build & evolve fuel performance models

  ● Take ownership of the development, extension, and adaption of fuel performance models for a lead-cooled fast-spectrum operation, with a focus on physical mechanisms rather than black-box use.

  ● Lead the benchmarking of models against multiple fuel types (including nitride, oxide and metallic fuels) and fuel performance codes, to support comparison, validation, and fallback options. ● Understand and improve model behaviour by analysing why models work, where they break down, and what must be changed for lead-cooled fast spectrum operation.

  ● Work closely with experimental and design teams to specify experimental testing (in- and out-of-pile) and examinations that generate data relevant for model validation or development. Shape data, experiments, and model credibility

  ● Define what experimental and operational data are needed to support, challenge, and improve fuel performance models

  ● Work closely with experimental and design teams to specify irradiation tests and pre- and post-irradiation examinations that generate data relevant for model validation or development

  ● Integrate data from experiments, literature, and historical programmes to calibrate models, assess validity ranges, and reduce key uncertainties

  ● Contribute to cross-disciplinary activities between reactor physics, thermal hydraulics, materials, backend, safety and licensing to ensure design coherence, manufacturability, and regulatory compliance. Align modelling with fuel qualification, licensing and industrialisation

  ● In collaboration with the Head of Fuel and wider fuel team, drive forward the company's advanced fuel qualification and update our plans for how the company will meet them.

  ● Define, maintain and own the modelling basis used in fuel qualification, including scope, gaps, assumptions, acceptance criteria, and regulatory expectations

  ● Coordinate with international labs and irradiation facilities to secure the knowledge and services (irradiation, PIE) needed to reach qualification and licensing goals.

  ● Ensure Blykalla is pro-active in interfacing with regulatory bodies and relevant programs that support advanced fuel qualification/performance modelling (including, but not limited to: SSM, DOE/NRC and IAEA).

  ● Contribute to the establishment of modelling workflows, documentation, and quality practices that ensure traceability, reproducibility, and regulatory readiness Fuel Design & Development

  ● With the Head of Fuel and Head of Nuclear Safety, coordinate cross-disciplinary integration of the fuel design between nuclear design, thermal-hydraulics, materials group, fuel experimental and modelling teams to ensure design coherence, consistent modelling assumptions, manufacturability, and regulatory compliance." Technical leadership

  ● With the Head of Fuel, support the transfer of knowledge and development of the next generation of “subject matter experts” across both fuel performance authorities or cross-disciplinary technical leadership.

  ● Provide technical mentorship to early career individuals, disseminating your experience and knowledge. Experience & Qualifications

  ● At least 15-years post-degree experience in nuclear fuel modelling, development and/or qualification.

  ● Modelling and simulation experience covering code/model modification, development or critical assessment rather than “black-box” use

  ● Degree, ideally PhD in nuclear engineering, physics, chemistry or a closely related field

  ● Experience defining and integrating experimental data from irradiation tests, post-irradiation examinations, literature, or historical programmes to support and improve modelling and accelerate fuel qualification

  ● Ability to define what data and experiments are needed to support model credibility and uncertainty reduction, and to work effectively with experimental and qualification teams

  ● Demonstrated ability to understand fuel behaviour at the mechanism level and to diagnose why models work, where they fail, and how they must be improved

  ● Hands-on experience with fuel performance codes such as TRANSURANUS, FRAPCON/FRAPTRAN, BISON, or similar tools, including extending, adapting, or validating models

  ● Understanding of how modelling contributes to fuel qualification, safety arguments, and regulatory submissions

  ● Ability to communicate and defend modelling assumptions, limitations, and results in technical discussions with regulators, authorities, and partners

  ● Fluency in English; Swedish is an advantage

  ● Willingness to travel within Europe, North America and occasionally beyond

  ● Eligibility to work with nuclear materials in Sweden Location The position is based in Stockholm. Travel to partner sites and research facilities will be part of the role.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Webbplats: https://careers.blykalla.com/jobs/8103812-fuel-performance-lead
  

  Ansökan

  Ansök senast 20 augusti (28 dagar kvar)

  Ansök här

  Visa mer

• Fuel Performance Lead

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 20 augusti (28 dagar kvar)

  Publicerad: 2026-07-21

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  Help Us Prove a New Standard in Nuclear Fuel

  Are you a technically sharp, self-driven engineer or scientist who understands how nuclear fuel really behaves - and how to prove it with credible models? Join Blykalla and lead the fuel development and qualification effort that underpins the use of a novel nuclear fuel in an advanced reactor. This role puts you at the center of predicting, validating, and defending fuel behaviour for the western world’s first lead-cooled SMR. You’ll own the delivery of the fuel qualification programme, and strongly influence the development of models and codes that allow for producing regulator-ready evidence to understand our fuel performance.

  
  

  What we do at Blykalla At Blykalla

  we are developing the next generation of nuclear technology with our Advanced Small Modular Reactor (SMR), based on uranium nitride fuel and a compact, lead-cooled design. As Sweden’s only SMR developer, we are on a mission to decarbonize heavy industry and other energy-intensive sectors and deliver safe, scalable, and sustainable energy.

  What you’ll get to do Your mission is to ensure that we can predict, explain and justify fuel behaviour with confidence, using validated models, defensible assumptions and traceable data. Build & evolve fuel performance models

  ● Take ownership of the development, extension, and adaption of fuel performance models for a lead-cooled fast-spectrum operation, with a focus on physical mechanisms rather than black-box use.

  ● Lead the benchmarking of models against multiple fuel types (including nitride, oxide and metallic fuels) and fuel performance codes, to support comparison, validation, and fallback options. ● Understand and improve model behaviour by analysing why models work, where they break down, and what must be changed for lead-cooled fast spectrum operation.

  ● Work closely with experimental and design teams to specify experimental testing (in- and out-of-pile) and examinations that generate data relevant for model validation or development. Shape data, experiments, and model credibility

  ● Define what experimental and operational data are needed to support, challenge, and improve fuel performance models

  ● Work closely with experimental and design teams to specify irradiation tests and pre- and post-irradiation examinations that generate data relevant for model validation or development

  ● Integrate data from experiments, literature, and historical programmes to calibrate models, assess validity ranges, and reduce key uncertainties

  ● Contribute to cross-disciplinary activities between reactor physics, thermal hydraulics, materials, backend, safety and licensing to ensure design coherence, manufacturability, and regulatory compliance. Align modelling with fuel qualification, licensing and industrialisation

  ● In collaboration with the Head of Fuel and wider fuel team, drive forward the company's advanced fuel qualification and update our plans for how the company will meet them.

  ● Define, maintain and own the modelling basis used in fuel qualification, including scope, gaps, assumptions, acceptance criteria, and regulatory expectations

  ● Coordinate with international labs and irradiation facilities to secure the knowledge and services (irradiation, PIE) needed to reach qualification and licensing goals.

  ● Ensure Blykalla is pro-active in interfacing with regulatory bodies and relevant programs that support advanced fuel qualification/performance modelling (including, but not limited to: SSM, DOE/NRC and IAEA).

  ● Contribute to the establishment of modelling workflows, documentation, and quality practices that ensure traceability, reproducibility, and regulatory readiness Fuel Design & Development

  ● With the Head of Fuel and Head of Nuclear Safety, coordinate cross-disciplinary integration of the fuel design between nuclear design, thermal-hydraulics, materials group, fuel experimental and modelling teams to ensure design coherence, consistent modelling assumptions, manufacturability, and regulatory compliance." Technical leadership

  ● With the Head of Fuel, support the transfer of knowledge and development of the next generation of “subject matter experts” across both fuel performance authorities or cross-disciplinary technical leadership.

  ● Provide technical mentorship to early career individuals, disseminating your experience and knowledge. Experience & Qualifications

  ● At least 15-years post-degree experience in nuclear fuel modelling, development and/or qualification.

  ● Modelling and simulation experience covering code/model modification, development or critical assessment rather than “black-box” use

  ● Degree, ideally PhD in nuclear engineering, physics, chemistry or a closely related field

  ● Experience defining and integrating experimental data from irradiation tests, post-irradiation examinations, literature, or historical programmes to support and improve modelling and accelerate fuel qualification

  ● Ability to define what data and experiments are needed to support model credibility and uncertainty reduction, and to work effectively with experimental and qualification teams

  ● Demonstrated ability to understand fuel behaviour at the mechanism level and to diagnose why models work, where they fail, and how they must be improved

  ● Hands-on experience with fuel performance codes such as TRANSURANUS, FRAPCON/FRAPTRAN, BISON, or similar tools, including extending, adapting, or validating models

  ● Understanding of how modelling contributes to fuel qualification, safety arguments, and regulatory submissions

  ● Ability to communicate and defend modelling assumptions, limitations, and results in technical discussions with regulators, authorities, and partners

  ● Fluency in English; Swedish is an advantage

  ● Willingness to travel within Europe, North America and occasionally beyond

  ● Eligibility to work with nuclear materials in Sweden Location The position is based in Stockholm. Travel to partner sites and research facilities will be part of the role.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Webbplats: https://careers.blykalla.com/jobs/8103812-fuel-performance-lead
  

  Ansökan

  Ansök senast 20 augusti (28 dagar kvar)

  Ansök här

  Visa mer

• Fuel Performance Lead

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 20 augusti (28 dagar kvar)

  Publicerad: 2026-07-21

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  Help Us Prove a New Standard in Nuclear Fuel

  Are you a technically sharp, self-driven engineer or scientist who understands how nuclear fuel really behaves - and how to prove it with credible models? Join Blykalla and lead the fuel development and qualification effort that underpins the use of a novel nuclear fuel in an advanced reactor. This role puts you at the center of predicting, validating, and defending fuel behaviour for the western world’s first lead-cooled SMR. You’ll own the delivery of the fuel qualification programme, and strongly influence the development of models and codes that allow for producing regulator-ready evidence to understand our fuel performance.

  
  

  What we do at Blykalla At Blykalla

  we are developing the next generation of nuclear technology with our Advanced Small Modular Reactor (SMR), based on uranium nitride fuel and a compact, lead-cooled design. As Sweden’s only SMR developer, we are on a mission to decarbonize heavy industry and other energy-intensive sectors and deliver safe, scalable, and sustainable energy.

  What you’ll get to do Your mission is to ensure that we can predict, explain and justify fuel behaviour with confidence, using validated models, defensible assumptions and traceable data. Build & evolve fuel performance models

  ● Take ownership of the development, extension, and adaption of fuel performance models for a lead-cooled fast-spectrum operation, with a focus on physical mechanisms rather than black-box use.

  ● Lead the benchmarking of models against multiple fuel types (including nitride, oxide and metallic fuels) and fuel performance codes, to support comparison, validation, and fallback options. ● Understand and improve model behaviour by analysing why models work, where they break down, and what must be changed for lead-cooled fast spectrum operation.

  ● Work closely with experimental and design teams to specify experimental testing (in- and out-of-pile) and examinations that generate data relevant for model validation or development. Shape data, experiments, and model credibility

  ● Define what experimental and operational data are needed to support, challenge, and improve fuel performance models

  ● Work closely with experimental and design teams to specify irradiation tests and pre- and post-irradiation examinations that generate data relevant for model validation or development

  ● Integrate data from experiments, literature, and historical programmes to calibrate models, assess validity ranges, and reduce key uncertainties

  ● Contribute to cross-disciplinary activities between reactor physics, thermal hydraulics, materials, backend, safety and licensing to ensure design coherence, manufacturability, and regulatory compliance. Align modelling with fuel qualification, licensing and industrialisation

  ● In collaboration with the Head of Fuel and wider fuel team, drive forward the company's advanced fuel qualification and update our plans for how the company will meet them.

  ● Define, maintain and own the modelling basis used in fuel qualification, including scope, gaps, assumptions, acceptance criteria, and regulatory expectations

  ● Coordinate with international labs and irradiation facilities to secure the knowledge and services (irradiation, PIE) needed to reach qualification and licensing goals.

  ● Ensure Blykalla is pro-active in interfacing with regulatory bodies and relevant programs that support advanced fuel qualification/performance modelling (including, but not limited to: SSM, DOE/NRC and IAEA).

  ● Contribute to the establishment of modelling workflows, documentation, and quality practices that ensure traceability, reproducibility, and regulatory readiness Fuel Design & Development

  ● With the Head of Fuel and Head of Nuclear Safety, coordinate cross-disciplinary integration of the fuel design between nuclear design, thermal-hydraulics, materials group, fuel experimental and modelling teams to ensure design coherence, consistent modelling assumptions, manufacturability, and regulatory compliance." Technical leadership

  ● With the Head of Fuel, support the transfer of knowledge and development of the next generation of “subject matter experts” across both fuel performance authorities or cross-disciplinary technical leadership.

  ● Provide technical mentorship to early career individuals, disseminating your experience and knowledge. Experience & Qualifications

  ● At least 15-years post-degree experience in nuclear fuel modelling, development and/or qualification.

  ● Modelling and simulation experience covering code/model modification, development or critical assessment rather than “black-box” use

  ● Degree, ideally PhD in nuclear engineering, physics, chemistry or a closely related field

  ● Experience defining and integrating experimental data from irradiation tests, post-irradiation examinations, literature, or historical programmes to support and improve modelling and accelerate fuel qualification

  ● Ability to define what data and experiments are needed to support model credibility and uncertainty reduction, and to work effectively with experimental and qualification teams

  ● Demonstrated ability to understand fuel behaviour at the mechanism level and to diagnose why models work, where they fail, and how they must be improved

  ● Hands-on experience with fuel performance codes such as TRANSURANUS, FRAPCON/FRAPTRAN, BISON, or similar tools, including extending, adapting, or validating models

  ● Understanding of how modelling contributes to fuel qualification, safety arguments, and regulatory submissions

  ● Ability to communicate and defend modelling assumptions, limitations, and results in technical discussions with regulators, authorities, and partners

  ● Fluency in English; Swedish is an advantage

  ● Willingness to travel within Europe, North America and occasionally beyond

  ● Eligibility to work with nuclear materials in Sweden Location The position is based in Stockholm. Travel to partner sites and research facilities will be part of the role.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Webbplats: https://careers.blykalla.com/jobs/8103812-fuel-performance-lead
  

  Ansökan

  Ansök senast 20 augusti (28 dagar kvar)

  Ansök här

  Visa mer

• Fuel Performance Lead

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 20 augusti (28 dagar kvar)

  Publicerad: 2026-07-21

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  Help Us Prove a New Standard in Nuclear Fuel

  Are you a technically sharp, self-driven engineer or scientist who understands how nuclear fuel really behaves - and how to prove it with credible models? Join Blykalla and lead the fuel development and qualification effort that underpins the use of a novel nuclear fuel in an advanced reactor. This role puts you at the center of predicting, validating, and defending fuel behaviour for the western world’s first lead-cooled SMR. You’ll own the delivery of the fuel qualification programme, and strongly influence the development of models and codes that allow for producing regulator-ready evidence to understand our fuel performance.

  
  

  What we do at Blykalla At Blykalla

  we are developing the next generation of nuclear technology with our Advanced Small Modular Reactor (SMR), based on uranium nitride fuel and a compact, lead-cooled design. As Sweden’s only SMR developer, we are on a mission to decarbonize heavy industry and other energy-intensive sectors and deliver safe, scalable, and sustainable energy.

  What you’ll get to do Your mission is to ensure that we can predict, explain and justify fuel behaviour with confidence, using validated models, defensible assumptions and traceable data. Build & evolve fuel performance models

  ● Take ownership of the development, extension, and adaption of fuel performance models for a lead-cooled fast-spectrum operation, with a focus on physical mechanisms rather than black-box use.

  ● Lead the benchmarking of models against multiple fuel types (including nitride, oxide and metallic fuels) and fuel performance codes, to support comparison, validation, and fallback options. ● Understand and improve model behaviour by analysing why models work, where they break down, and what must be changed for lead-cooled fast spectrum operation.

  ● Work closely with experimental and design teams to specify experimental testing (in- and out-of-pile) and examinations that generate data relevant for model validation or development. Shape data, experiments, and model credibility

  ● Define what experimental and operational data are needed to support, challenge, and improve fuel performance models

  ● Work closely with experimental and design teams to specify irradiation tests and pre- and post-irradiation examinations that generate data relevant for model validation or development

  ● Integrate data from experiments, literature, and historical programmes to calibrate models, assess validity ranges, and reduce key uncertainties

  ● Contribute to cross-disciplinary activities between reactor physics, thermal hydraulics, materials, backend, safety and licensing to ensure design coherence, manufacturability, and regulatory compliance. Align modelling with fuel qualification, licensing and industrialisation

  ● In collaboration with the Head of Fuel and wider fuel team, drive forward the company's advanced fuel qualification and update our plans for how the company will meet them.

  ● Define, maintain and own the modelling basis used in fuel qualification, including scope, gaps, assumptions, acceptance criteria, and regulatory expectations

  ● Coordinate with international labs and irradiation facilities to secure the knowledge and services (irradiation, PIE) needed to reach qualification and licensing goals.

  ● Ensure Blykalla is pro-active in interfacing with regulatory bodies and relevant programs that support advanced fuel qualification/performance modelling (including, but not limited to: SSM, DOE/NRC and IAEA).

  ● Contribute to the establishment of modelling workflows, documentation, and quality practices that ensure traceability, reproducibility, and regulatory readiness Fuel Design & Development

  ● With the Head of Fuel and Head of Nuclear Safety, coordinate cross-disciplinary integration of the fuel design between nuclear design, thermal-hydraulics, materials group, fuel experimental and modelling teams to ensure design coherence, consistent modelling assumptions, manufacturability, and regulatory compliance." Technical leadership

  ● With the Head of Fuel, support the transfer of knowledge and development of the next generation of “subject matter experts” across both fuel performance authorities or cross-disciplinary technical leadership.

  ● Provide technical mentorship to early career individuals, disseminating your experience and knowledge. Experience & Qualifications

  ● At least 15-years post-degree experience in nuclear fuel modelling, development and/or qualification.

  ● Modelling and simulation experience covering code/model modification, development or critical assessment rather than “black-box” use

  ● Degree, ideally PhD in nuclear engineering, physics, chemistry or a closely related field

  ● Experience defining and integrating experimental data from irradiation tests, post-irradiation examinations, literature, or historical programmes to support and improve modelling and accelerate fuel qualification

  ● Ability to define what data and experiments are needed to support model credibility and uncertainty reduction, and to work effectively with experimental and qualification teams

  ● Demonstrated ability to understand fuel behaviour at the mechanism level and to diagnose why models work, where they fail, and how they must be improved

  ● Hands-on experience with fuel performance codes such as TRANSURANUS, FRAPCON/FRAPTRAN, BISON, or similar tools, including extending, adapting, or validating models

  ● Understanding of how modelling contributes to fuel qualification, safety arguments, and regulatory submissions

  ● Ability to communicate and defend modelling assumptions, limitations, and results in technical discussions with regulators, authorities, and partners

  ● Fluency in English; Swedish is an advantage

  ● Willingness to travel within Europe, North America and occasionally beyond

  ● Eligibility to work with nuclear materials in Sweden Location The position is based in Stockholm. Travel to partner sites and research facilities will be part of the role.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Webbplats: https://careers.blykalla.com/jobs/8103812-fuel-performance-lead
  

  Ansökan

  Ansök senast 20 augusti (28 dagar kvar)

  Ansök här

  Visa mer

• Fuel Performance Lead

  Arbetsgivare / Ort:Blykalla AB / STOCKHOLM

  Omfattning / Varaktighet:Tillsvidareanställning (inkl. eventuell provanställning) / Tills vidare

  Lönetyp: Fast månads- vecko- eller timlön

  Ansök senast 20 augusti (28 dagar kvar)

  Publicerad: 2026-07-21

  Källa: Arbetsförmedlingen

  Ansök här

  Om jobbet

  Help Us Prove a New Standard in Nuclear Fuel

  Are you a technically sharp, self-driven engineer or scientist who understands how nuclear fuel really behaves - and how to prove it with credible models? Join Blykalla and lead the fuel development and qualification effort that underpins the use of a novel nuclear fuel in an advanced reactor. This role puts you at the center of predicting, validating, and defending fuel behaviour for the western world’s first lead-cooled SMR. You’ll own the delivery of the fuel qualification programme, and strongly influence the development of models and codes that allow for producing regulator-ready evidence to understand our fuel performance.

  
  

  What we do at Blykalla At Blykalla

  we are developing the next generation of nuclear technology with our Advanced Small Modular Reactor (SMR), based on uranium nitride fuel and a compact, lead-cooled design. As Sweden’s only SMR developer, we are on a mission to decarbonize heavy industry and other energy-intensive sectors and deliver safe, scalable, and sustainable energy.

  What you’ll get to do Your mission is to ensure that we can predict, explain and justify fuel behaviour with confidence, using validated models, defensible assumptions and traceable data. Build & evolve fuel performance models

  ● Take ownership of the development, extension, and adaption of fuel performance models for a lead-cooled fast-spectrum operation, with a focus on physical mechanisms rather than black-box use.

  ● Lead the benchmarking of models against multiple fuel types (including nitride, oxide and metallic fuels) and fuel performance codes, to support comparison, validation, and fallback options. ● Understand and improve model behaviour by analysing why models work, where they break down, and what must be changed for lead-cooled fast spectrum operation.

  ● Work closely with experimental and design teams to specify experimental testing (in- and out-of-pile) and examinations that generate data relevant for model validation or development. Shape data, experiments, and model credibility

  ● Define what experimental and operational data are needed to support, challenge, and improve fuel performance models

  ● Work closely with experimental and design teams to specify irradiation tests and pre- and post-irradiation examinations that generate data relevant for model validation or development

  ● Integrate data from experiments, literature, and historical programmes to calibrate models, assess validity ranges, and reduce key uncertainties

  ● Contribute to cross-disciplinary activities between reactor physics, thermal hydraulics, materials, backend, safety and licensing to ensure design coherence, manufacturability, and regulatory compliance. Align modelling with fuel qualification, licensing and industrialisation

  ● In collaboration with the Head of Fuel and wider fuel team, drive forward the company's advanced fuel qualification and update our plans for how the company will meet them.

  ● Define, maintain and own the modelling basis used in fuel qualification, including scope, gaps, assumptions, acceptance criteria, and regulatory expectations

  ● Coordinate with international labs and irradiation facilities to secure the knowledge and services (irradiation, PIE) needed to reach qualification and licensing goals.

  ● Ensure Blykalla is pro-active in interfacing with regulatory bodies and relevant programs that support advanced fuel qualification/performance modelling (including, but not limited to: SSM, DOE/NRC and IAEA).

  ● Contribute to the establishment of modelling workflows, documentation, and quality practices that ensure traceability, reproducibility, and regulatory readiness Fuel Design & Development

  ● With the Head of Fuel and Head of Nuclear Safety, coordinate cross-disciplinary integration of the fuel design between nuclear design, thermal-hydraulics, materials group, fuel experimental and modelling teams to ensure design coherence, consistent modelling assumptions, manufacturability, and regulatory compliance." Technical leadership

  ● With the Head of Fuel, support the transfer of knowledge and development of the next generation of “subject matter experts” across both fuel performance authorities or cross-disciplinary technical leadership.

  ● Provide technical mentorship to early career individuals, disseminating your experience and knowledge. Experience & Qualifications

  ● At least 15-years post-degree experience in nuclear fuel modelling, development and/or qualification.

  ● Modelling and simulation experience covering code/model modification, development or critical assessment rather than “black-box” use

  ● Degree, ideally PhD in nuclear engineering, physics, chemistry or a closely related field

  ● Experience defining and integrating experimental data from irradiation tests, post-irradiation examinations, literature, or historical programmes to support and improve modelling and accelerate fuel qualification

  ● Ability to define what data and experiments are needed to support model credibility and uncertainty reduction, and to work effectively with experimental and qualification teams

  ● Demonstrated ability to understand fuel behaviour at the mechanism level and to diagnose why models work, where they fail, and how they must be improved

  ● Hands-on experience with fuel performance codes such as TRANSURANUS, FRAPCON/FRAPTRAN, BISON, or similar tools, including extending, adapting, or validating models

  ● Understanding of how modelling contributes to fuel qualification, safety arguments, and regulatory submissions

  ● Ability to communicate and defend modelling assumptions, limitations, and results in technical discussions with regulators, authorities, and partners

  ● Fluency in English; Swedish is an advantage

  ● Willingness to travel within Europe, North America and occasionally beyond

  ● Eligibility to work with nuclear materials in Sweden Location The position is based in Stockholm. Travel to partner sites and research facilities will be part of the role.

  Arbetslivserfarenhet

  • Produktionstekniker (meriterande)
  • maskin/Produktionstekniker (meriterande)
  • verkstad (meriterande)

  Arbetsgivare

  Blykalla AB
  Sveavägen 25
  11134 STOCKHOLM

  Webbplats: https://careers.blykalla.com/jobs/8103812-fuel-performance-lead
  

  Ansökan

  Ansök senast 20 augusti (28 dagar kvar)

  Ansök här

  Visa mer

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