Site Delivery Lead - Civils

At Assystem, our mission is to accelerate the global energy transition by driving innovation in low-carbon energy. With 8000 Switchers across 12 countries, we leverage 55+ years of expertise in highly regulated industries to deliver engineering and digital solutions for complex infrastructure projects. As one of the top three nuclear engineering companies in the world, we are committed to a sustainable and reliable energy future for all.

When you join Assystem, you’re joining one of the top three largest nuclear engineering companies globally. Collaborate with a team that combines world‑class engineering expertise with digital innovation to solve the challenges of energy transition. Be part of a mission to create a more sustainable future and enjoy opportunities to develop your skills and progress your career in exciting, high‑impact projects.

Reporting directly to the Sizewell C Site Delivery Director, the Site Delivery Lead holds delegated accountability for the end to end delivery of a defined section of the Main Development Site.

This is a senior leadership position operating just below Director level, with responsibility for leading Senior Managers and Area Delivery teams, and carrying delegated Principal Contractor duties across enabling works, major civils, networks and buildings. The role holds significant safety, commercial and programme accountability within a technically complex, highly regulated nuclear construction environment.

The Site Delivery Lead ensures safe, compliant and predictable execution of scope from concept through to handover, aligning construction strategy with programme objectives, contractual obligations and statutory legislation.

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 percent of the criteria and are motivated to develop further, we would strongly encourage you to apply.

This is a rare opportunity to take on a senior, site-based leadership role on one of the UK’s most important infrastructure projects. You will shape delivery at scale, influence outcomes that matter nationally, and work alongside experienced professionals who value accountability and collaboration.

🏖️ 25 days’ paid annual leave + bank holidays + option to buy or sell days

🤒 Competitive Sick Pay – Support when you need it

💪 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.