Seaborg Technologies is a start-up on the forefront of advanced and innovative nuclear reactor technology working to provide abundant, affordable and sustainable energy to the world. We have grown to become the leading molten salt reactor start-up outside of North America with an international team of 20 employees from four continents. We are actively developing the design for our Compact Molten Salt Reactor, alongside licensing and experimental validation activities of key safety and performance claims, and are currently planning a multi-million salt lab to accelerate these efforts. We are engaged with multiple stakeholders in the growing advanced reactor supply chain, primarily in East Asia.


Our success is entirely due to our brilliant and passionate team of employees and experienced advisers - a team we are currently in the process of expanding with more world-class talent determined to create positive change in the world.


We are hiring a Safety Manager to lead and accelerate the development of the CMSR safety case. The successful candidate will plan, organise and execute all activities related to nuclear safety, importantly including qualitative and quantitative risk assessments in support of licensing activities and to steer the reactor design development process. She/he will take ownership and drive the development of the Preliminary Safety Assessment Report. As the in-house leader and oracle on nuclear safety, candidates will also be expected to quickly adopt, further develop and continuously encourage by example the adherence to the Seaborg safety culture. The position will collaborate closely with technical and regulatory departments, to ensure that relevant physical phenomena and safety considerations are given due consideration across all relevant activities. Some international travelling should be expected.


Seaborg employees must be able to act proactively and independently to perform a wide variety of functions that do not always correlate with experience or expertise (such as writing job advertisements). That being said, the advertised position is expected to include at least some of the following responsibilities and tasks:

  • Develop the CMSR safety case;

  • Be responsible for the development and maintenance of the CMSR Preliminary Safety Assessment Report;

  • Plan and perform qualitative and quantitative risk assessments;

  • Plan, schedule and cost R&D activities with the purpose of substantiating safety-related claims and hypotheses;

  • Lead teams of reactor physicists, engineers and chemists in investigating safety-related claims and hypotheses;

  • Analyse and leverage risk assessment results to steer design activities as part of an iterative and evidence-based design development process;

  • Investigate and assess reactor safety performance against relevant regulatory requirements and recommendations;

  • Adopt, develop and champion Seaborg’s safety culture;

  • Represent Seaborg at meetings and conferences that aim at modernising current regulatory frameworks and establish safety requirements for molten salt reactors;

  • Train new employees and interns from around the world;

  • Support IP development and acquisition activities.


  • Desire to positively change the world by shaping the energy landscape of tomorrow;

  • Demonstrated ability to diligently approach and solve challenging tasks within time and budgetary constraints;

  • BSc or higher in nuclear, energy or systems engineering, or related field;

  • Seasoned safety and/or risk assessment professional with 5+ years of relevant experience;

  • Considerable experience with developing safety cases and safety-related documentation for nuclear, oil & gas, or other relevant energy installations;

  • Expert practitioner of a wide range of risk assessment techniques such as qualitative safety review, HAZOP, PERT, PSA levels 1-3, etc.;

  • Familiarity with nuclear safety and security concepts, as well as nuclear safety culture;

  • Strong moral compass and personal integrity, unwilling to compromise on ultimate safety;

  • Familiarity with ISO or NQA quality assurance standards;

  • Team player with effective communication and interpersonal skills, including fluency in English;

  • Ability to travel by plane and communicate outside of normal working hours when necessary.


At Seaborg we strongly value the combination of relevant experience, talent and personality traits that align with our team and overarching vision for a sustainable future. We therefore encourage applications from diverse backgrounds and are prepared to mould the job description to accommodate well-aligned candidates.


While our team is still small, our ambitions are not. Becoming a part of Seaborg presents a unique possibility to importantly impact and define the global energy landscape of tomorrow. We know that new ideas and influences are key to challenge the status quo and strive for continuous improvement, and so new hires can expect to importantly contribute to shaping both the technology and the future of the company.

We want to play an active role in enabling the personal and professional development of all employees so that they can evolve and grow to take on changing tasks and responsibilities. To give room for this development, we practice high work flexibility in an informal, merit-based environment without strict hierarchies. With time, we expect every employee to become an invaluable part of Seaborg and our success, and we underpin this expectation by offering all new employees stock options in the company.


We are based in Denmark, a country known for its high quality of life and extensive social welfare system. That means free health care and education, generous vacation arrangements, progressive maternity and paternity leave provisions, etc. More on this at


Our office is situated centrally in Copenhagen - a young and vibrant European capital on the Øresund coast with a thriving expat community and world-leading bicycle infrastructure.



Please note that we no longer accept applications for this position.

However, if you think you would be an outstanding candidate for a similar position in the future, feel free to let us know by sending an email to

  • LinkedIn - White Circle
  • Facebook - White Circle
  • Twitter - White Circle

 © 2020  Seaborg Technologies

Titangade 11

2200 Copenhagen N