Mechanical Building Services Engineer

⚡️💡 About Assystem

Assystem is an international engineering and project management group accelerating the energy transition worldwide. Our 8,000 Switchers combine decades of engineering expertise with digital innovation to deliver complex, safety-critical infrastructure. In the UK, we play a key role on landmark programmes including Hinkley Point C, Sizewell C and emerging Small Modular Reactor developments, supporting the delivery of secure, low-carbon energy for the future.

🤝 Why Join the Community of Switchers?

You will be joining one of the three largest nuclear engineering companies in the world, working at the heart of the UK’s most significant energy programme. Assystem offers exposure to world-class projects, long-term career stability, and the opportunity to work alongside highly experienced engineers and delivery teams. Your future team values collaboration, practical problem solving, and engineers who want to make a real impact on site.

🚀 The Job Mission

This is a hybrid role, requiring two days per week in our Bristol office, with occasional site visits to Hinkley Point C in Bridgwater.

The role supports design management of the Operational Service Centre and associated Skybridges. Responsibility includes oversight of final MEP execution design and configuration control. The position provides technical leadership during installation, resolving site queries and ensuring quality compliance.

🔧Manage delivery of remaining MEP execution design packages

📑Review and approve supplier Design Package Release Notes

🔄Control technical configuration and change management processes

🏗Coordinate multidisciplinary interfaces across building design disciplines

🛡Maintain critical oversight of health and safety proposals

📂Ensure Lifetime Quality Records are complete and compliant

⚙Resolve site technical queries, change requests and non conformances

📊Support readiness reviews and release hold points appropriately

🤝Interface with Responsible Designer and wider internal stakeholders

📢Report progress, escalate risks and manage open technical points

Qualifications

Nuclear experience is not essential, but is of course welcome. If you have worked within a highly regulated environment, your skills and approach are highly transferable and of strong interest to us. We also recognise that the perfect candidate rarely exists. If you feel you meet around 80% of the criteria and are motivated to develop further, we would strongly encourage you to apply

🎓Degree in Mechanical Engineering

📋Experience in project coordination and design management

🏭Background in nuclear or regulated industry environments

🏢Knowledge of UK building regulations and compliance

🔍Strong attention to detail and configuration control focus

📊Experience managing technical change processes

🤝Ability to coordinate multidisciplinary stakeholder groups

🗂Understanding of surveillance and quality assurance processes

🔐Professional discretion handling sensitive project information

🌟 Ready to Make an Impact?

This is an opportunity to contribute to nationally significant energy infrastructure while developing your technical depth within a globally recognised engineering organisation. If you want real responsibility, exposure to complex mechanical systems, and the chance to grow within one of the world’s leading nuclear engineering companies, this role offers long-term progression and stability.

Benefits include:

🏡 Hybrid Working Opportunity

🕒 Flexible working hours

🛡️ Market Leading 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.