⚡️💡 About Assystem
At Assystem, our mission is to accelerate the global energy transition. With over 7,500 Switchers worldwide, we combine engineering expertise, project management, and digital innovation to deliver major infrastructure programmes. In the UK, we’re at the forefront of landmark projects including Hinkley Point C, Sizewell C, and future Small Modular Reactors (SMRs). By joining us, you’ll be contributing to some of the most exciting and important engineering challenges of our time.
🤝 Why Join the Community of Switchers?
At Assystem, you’ll be part of one of the top three largest nuclear engineering companies in the world. Joining us means working in a collaborative and supportive environment where innovation thrives. You’ll be empowered to grow your skills while contributing to cutting-edge projects that have a lasting global impact.
⚠️ Please note: Due to project security requirements, Unfortunately, visa sponsorship is not available for this position.
Job Description
The Job Mission
This hybrid Process Engineer role is based in Bristol, with three days in the office and two days from home. You will support the replication of fluid system designs across two major nuclear projects. You will help maintain system design stability through analysis, modelling and configuration updates. You will work closely with design, procurement and commissioning teams throughout the project lifecycle.
Responsibilities:
🧪 Issuance of replication analysis for fluid system design
📊 Verification of input data, requirements and lessons learned
📝 Development of processes for system design document replication
🔧 Component sizing and thermal hydraulic modelling when adaptations are needed
🤝 Technical support to procurement teams and suppliers
📚 Updating configuration data and system documentation to reflect changes
🧩 Developing technical solutions that support design stability
Qualifications
Skills Required:
🎓 Mechanical or Chemical Engineering degree or equivalent
🧮 Experience within highly regulated industries or heavy industrial projects
🔄 Experience in process, hydraulic, mechanical sizing or I&C
🗂 Strong ability to manage workload and produce quality documentation
🗣 Clear written and verbal communication with UK and EU teams
🌍 Confident working with remote and international engineering stakeholders
Additional Information
⚠️ Please note: Due to project security requirements, Unfortunately, visa sponsorship is not available for this position
🌟 Why Apply?
This is your chance to work on a project that defines the future of clean energy in the UK. You’ll join a forward-thinking organisation where your contribution directly supports a safer, more sustainable world. If you’re ready to take on the challenge and grow with your future team, apply today.
Benefits include:
🏡 Hybrid Working Opportunity
🕒 Flexible working hours
🛡️ Pension scheme (8% company contribution / 4% personal contribution)
🏖️ 25 days’ paid annual leave + bank holidays + option to buy or sell days
💼 Professional fees reimbursed
💰 Employee referral scheme
🤒 Competitive Sick Pay – Support when you need it
🏥 Income Protection & 3x Salary Death-in-Service Cover
💪 Free Digital Gym Access – Expert-led fitness classes
📞 24/7 Employee Support Line – Mental health, financial & legal help
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.
