Senior Mechanical Engineer

Senior Mechanical Engineer

Our client is an innovative clean energy technology company, pioneering advancements at the intersection of nuclear energy, particle physics, and waste recycling. With operations in Europe and the U.S., they are developing a next‑generation accelerator‑driven system (ADS) using thorium and existing radioactive waste to produce intrinsically safe energy while addressing one of the biggest challenges in nuclear science: spent fuel management.

Recognized internationally and supported by leading research initiatives, they are now expanding their U.S. presence with a dedicated team at Los Alamos National Laboratory.

We are seeking an experienced Senior Mechanical Engineer to play a key role in the design and development of high‑reliability systems for ion sources and particle accelerator beamline components. This position offers a rare opportunity to contribute to cutting‑edge innovation in energy and advanced nuclear technologies.

• Design, analyse, and optimise mechanical components and systems for ion source setups, including housings, cooling systems, mechanical supports, and interfaces.
• Collaborate with multidisciplinary teams to ensure manufacturability, safety, and long‑term reliability.
• Conduct stress and thermal analyses for steady‑state and high‑reliability operations.
• Oversee fabrication, assembly, and testing of mechanical components to meet project quality and schedule requirements.
• Provide hands‑on support during installation, commissioning, troubleshooting, and upgrades.
• Maintain detailed technical documentation, including design specifications, reports, and recommendations.

• Have experience in high‑reliability mechanical systems, particle accelerators, ion beam components or adjacent technologies.
• Master’s degree in Mechanical Engineering or related discipline.
• 7+ years of experience in mechanical design and manufacturing, ideally in high‑reliability environments (e.g., particle accelerators, advanced energy systems).
• Proficiency in CAD and simulation tools (e.g., ANSYS, Solid Works, CATIA).
• Strong knowledge of materials selection, thermal management, and manufacturing processes.
• Track record of working effectively within cross‑functional, international teams.

• Experience with particle accelerator or ion source design.
• Expertise in thermal optimisation of mechanical components.
• Familiarity with electromagnetic compatibility standards (e.g., IEC 61000).
• Knowledge of ASME/ISO technical drawing standards.
• Awareness of industry norms for mechanical systems in high‑power or accelerator‑based applications.

• Contribute to ground‑breaking technology that combines energy innovation with sustainable waste recycling.
• Collaborate with world‑class researchers and engineers on a project of global significance.
• Be part of a growing U.S. team shaping the future of safe, clean nuclear energy.

If you’re an experienced senior mechanical engineer excited to work on pioneering energy technologies, we’d love to hear from you. Submit your CV to