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 nuclear 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?
Join Assystem and become part of a technical community delivering some of the UK’s most important low‑carbon infrastructure. This role gives you direct exposure to the construction to commissioning interface, working with experienced EC&I specialists across complex, safety‑critical systems.
You will be supported by a strong engineering network, long‑term project stability, and clear opportunities to strengthen your commissioning capability within a global business.
Benefits include:
* Professional fees covered fully
* Competitive Sick Pay – Support when you need it
* 24/7 Employee Support Line – Mental health, financial & legal help
* Additional benefits available
The Job Role
This is a full time role with site presence required, considering candidates within commuting distance or open to supported relocation. The role operates at the construction to commissioning interface on a major nuclear project. You will deliver hands‑on commissioning of safety‑classified instrumentation and control systems through to handover.
* Support construction and installation readiness for safety‑classified I&C systems
* Review P&IDs, loop diagrams, datasheets, wiring and system documentation
* Verify as‑built instrumentation, cabling, tubing and impulse lines against approved design
* Carry out and support inspection, calibration and loop readiness activities
* Identify defects, incomplete works and deviations under configuration control
* Execute loop checks, point‑to‑point testing and functional testing activities
* Interface with DCS, PLC and protection systems validating alarms and safety functions
* Support commissioning of pneumatic, hydraulic and motor‑operated final elements
* Track commissioning progress and report system status to the Commissioning Manager
Required Skills and 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 or HNC or HND in Instrumentation, Control or related discipline
* Strong knowledge of process instrumentation and measurement principles
* Hands‑on experience calibrating industrial or safety‑related instrumentation
* Experience interfacing field instrumentation with DCS or PLC systems
* Experience supporting commissioning of control valves and final elements
* Understanding of calibration tolerances, acceptance criteria and traceability
* Familiarity with commissioning work control, permits and quality processes
* Experience in nuclear, power generation, oil & gas or heavy industrial environments
This role offers hands‑on involvement in commissioning safety‑critical I&C systems on one of the UK’s most significant nuclear programmes. You will build deep commissioning capability, work alongside experienced specialists, and strengthen your long‑term career within a global engineering organisation delivering nationally important infrastructure.
Benefits
* 25 days’ paid annual leave plus bank holidays, with 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
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.
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