Assystem is a global leader committed to accelerating the energy transition. With 7,750 employees across 12 countries, we tackle the monumental task of switching to low-carbon energy. Our 55+ years of experience in highly regulated sectors ensure we deliver top-notch engineering, project management, and digital solutions.
Job DescriptionYour mission
Assystem is growing fast — and our stress and structural integrity capability is growing with it. We’re looking for a Senior/Principal Stress Engineer who is ready to take the next step into a technical and capability leadership role, helping to strengthen, grow and develop our UK stress engineering community.
This is a hybrid role: you’ll deliver high-value technical work for clients while also shaping the direction, tools, talent and strategy of our stress capability.
What You’ll Do:
🔧 Lead complex stress and structural integrity assessments using FEA and hand calculations
📄 Review and approve technical work, representing Assystem confidently with clients
🎓 Mentor and develop engineers, building future stress specialists
🌱 Drive capability growth — training, methods, best practices, recruitment and retention
📈 Support bids and business development, working closely with Engineering Directors and Sales
🤝 Collaborate across multi-disciplinary teams in the nuclear and defence sectors
QualificationsWhat You’ll Bring:
🤝 To lead, build and guide a community of highly skilled stress engineers
🔧 Strong background in stress analysis / structural integrity
✨ Expertise in FEA (ABAQUS, ANSYS, etc.) and relevant assessment codes (ASME, BS7910, R6 etc.)
📚 Experience in the nuclear or similar highly regulated sector
🎓 Chartered Engineer status (CEng) or working toward it
⚡ Ability to develop and implement technical strategy and capability development
Additional InformationWhy join the community of switchers:
📚 Ongoing training with numerous career opportunities.
📈 70% of our managers are promoted internally!
✨8% company pension contributions
⚡Discounts on restaurants, days out, and high-street brands
Additional information
Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level.
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.
Top Skills
What We Do
Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition. We see ourselves as an activist in the development of nuclear energy, convinced that it is an essential part of the fight against climate change. 7,000 switchers, spread in 12 countries in Europe, Asia, Africa and the Middle East are working every day to make the energy switch by accelerating the development of nuclear and renewable energies, power grids, clean hydrogen projects and low-carbon transport. We design and supervise major projects through our engineering activities and accelerate our customers' digital transformation. We also develop new solutions to build faster and improve the performance of complex infrastructures. 55 years of experience have made Assystem a key partner of the world's largest industrial groups: CEA, EDF, ENEC, Enedis, Engie, Framatome, ITER, K.A. CARE, Naval Group, NICDC, Orano, RATP, Rolls Royce, Royal Commission, Sellafield, SGP, SNCF... Assystem is ranked in the Top 3 companies in the nuclear energy sector.
