Piping Site Supervisor - Nuclear

⚡️ About Assystem

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

Why Join the Community of Switchers?

As a member of Assystem, you'll be part of a team driving the low-carbon energy future. We’re ranked second globally in nuclear engineering, offering you the chance to work on world-class projects like Hinkley Point C. Together, we’ll innovate and shape tomorrow’s energy solutions.

You will supervise piping construction activities across a major nuclear new-build programme.

You will lead multidisciplinary installation teams delivering complex piping system missions.

You will ensure safe, compliant, and high-quality execution throughout construction delivery.

Lead pipefitters, welders, riggers, and construction trades onsite

Supervise large bore stainless steel piping installation activities

Coordinate work packs, permits, and daily task briefings

Review isometrics, P&IDs, drawings, and technical specifications

️Promote nuclear safety culture and site procedural compliance

Manage hydrotest preparation, execution, and documentation activities

⚙️Coordinate testing, flushing, drying, and reinstatement operations

Liaise with engineering, QA/QC, HSE, and commissioning teams

Monitor productivity, progress, and milestone delivery performance

Maintain inspection records, testing data, and construction documentation

Mechanical Engineering degree, apprenticeship, or equivalent technical qualification

Proven experience supervising piping activities on power generation projects

Extensive large bore stainless steel pipework installation experience

Strong knowledge of high-pressure piping systems and operations

️Experience overseeing pipe supports and mechanical installation activities

Ability to interpret isometrics, P&IDs, and technical drawings

Experience supervising multidisciplinary construction and subcontractor teams

Strong knowledge of HSE, quality, and construction compliance requirements

CSCS Supervisor Card and recognised safety qualification required

Fluent English communication and stakeholder management skills

 What we offer

Hybrid Working – Flexibility to work from home and the office

️ 25 Days Annual Leave + Bank Holidays

Buy & Sell Holiday – Make your time off work for you

8% Company Pension Contributions

️ Income Protection & 3x Salary Death-in-Service Cover

Competitive Sick Pay – Support when you need it

Healthcare Cash Plan – Claim back on dental, optical & more

Free Digital Gym Access – Expert-led fitness classes

Exclusive Discounts – Restaurants, days out & top brands

24/7 Employee Support Line – Mental health, financial & legal help

Cycle to Work Scheme – Save money & go green

Free Flu Jabs & Eye Test Vouchers

Paid Professional Membership Fees

❤️ Volunteer Days – Make a difference on company time

Join Assystem and contribute to delivering sustainable and innovative engineering solutions for the Hinkley Point C project.

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.

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.