Senior Engineer- Fuel Cycle

Senior Engineer – Fuel Cycle & Process Modelling Join to apply for the Senior Engineer – Fuel Cycle & Process Modelling role at Type One Energy About Type One Energy Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world. Established in 2019 and venture‑backed in 2023, the company is led by a team of globally recognized fusion scientists with a strong track record of building state‑of‑the‑art stellarator fusion machines, together with veteran business leaders experienced in scaling companies and commercializing energy technologies. We aim to commercialize fusion energy, and we are looking for a highly experienced and technically strong Senior Engineer – Fuel Cycle & Process Modelling to lead the development, integration, and validation of advanced modelling frameworks for the fusion fuel cycle. Location and Compensation Location: Knoxville (TN), Madison (WI) or Oxford (United Kingdom) Salary: Highly Competitive Plus Benefits Contract: Permanent, full‑time Reporting to: Director, Nuclear & Fuel Cycle Engineering Your role in the mission Type One Energy is seeking a highly experienced and technically strong senior engineer to drive the development, integration, and validation of advanced modelling frameworks for the fusion fuel cycle. You will shape the architecture and performance of our Infinity 2 stellarator reactor and future commercial systems. Your responsibilities include: Develop a team of modelers and analysts, overseeing system‑level and subsystem‑level models and ensuring alignment with design, safety and operational requirements. Establish robust modelling frameworks that integrate multiple simulation tools, maintain version control and traceability of key data, and embed experimental and R&D data into workflows. Ensure comprehensive digital accounting of tritium across the fusion plant, supporting the development of a digital twin for operational planning, safety analysis and regulatory compliance. Serve as the responsible officer for a fuel cycle subsystem, ensuring clear development pathways and efficient, streamlined system designs. Collaborate with cross‑functional teams to conceptualise, design and implement robust fuel cycle models and address key requirements with the modelling development team. Conduct comprehensive process simulations and modelling to assess the efficiency, feasibility and safety of your responsible subsystem. Apply modelling expertise to simulate behaviour of key subsystems and support iterative refinement of the fuel cycle architecture. Develop a comprehensive roadmap for modelling tool development, including timeline, technical requirements, funding needs and resource allocations. Analyse data and perform in‑depth research to identify areas for process improvement and optimisation, aiming for enhanced efficiency and tritium control. Prepare technical reports, mass and energy balances, scopes of work, presentations and publications to disseminate research and contribute to the scientific community. Work closely with a multidisciplinary team of scientists, engineers and technicians to foster collaboration and integrate tritium considerations into product development. Collaborate with external partners, including academic institutions, research organisations and industry partners, to explore potential collaborations and stay at the forefront of fusion technologies. Assist with preparing protocols and procedures for the safe handling of tritium for experiments pertaining to your subsystem. Be accountable for the quality and accuracy of work and provide transparent, realistic feedback on timelines, resource requirements and issues. What you’ll need PhD or equivalent experience in Nuclear Engineering, Systems Engineering, Physics, or a related field. Proven track record in modelling complex nuclear or chemical systems, ideally within the fusion or advanced fission domain. Deep understanding of tritium and hydrogen isotope behaviour, fuel cycle dynamics and reactor systems integration. Proficiency in modelling tools such as Aspen Plus, COMSOL, FESTIM, TMAP, MATLAB or Python‑based platforms. Experience leading technical teams and managing multi‑disciplinary modelling efforts. Strong analytical and problem‑solving skills, with a focus on model accuracy, validation and decision support. Familiarity with nuclear safety standards, regulatory frameworks and design control processes. Excellent communication skills and the ability to translate complex technical concepts for diverse audiences. We offer Basic salary and yearly bonus Stock and share options 401(k) retirement options Many more voluntary benefits Equal Opportunity Statement Type One Energy is an equal opportunity employer. We value diversity, searching for the best new ideas and remaining open to unique perspectives. Therefore, all qualified applicants will receive consideration for employment independent of race, colour, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age, or any other characteristics protected by applicable federal, state or local laws. All qualified individuals are encouraged to apply. #J-18808-Ljbffr