EC&I Commissioning engineer

Our Vacancy# EC&I Commissioning engineer
* Nuclear* Permanent /
* Bridgwater* United Kingdom
* 18/12/25
* On site
* Share️
** About Assystem
** At Assystem, our mission is to accelerate the energy transition worldwide. Our 7,500 Switchers combine long-standing engineering expertise with project delivery and digital capability to support complex, safety-critical infrastructure. In the UK, we are embedded in landmark programmes including Hinkley Point C, Sizewell C and future Small Modular Reactor developments. We support projects from construction through commissioning and into operation, helping deliver safe, low-carbon energy for generations.
You will be joining one of the three largest nuclear engineering companies in the world, trusted on the most demanding regulated programmes globally. Assystem offers long-term project stability, exposure to full lifecycle delivery, and the opportunity to deepen your commissioning expertise within a strong technical community. Your future team works collaboratively, sharing knowledge and maintaining the highest standards of safety and quality.##

Job Description
** 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
** 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 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.
#J-18808-Ljbffr