Instrumentation and Controls Commissioning engineer

Our Vacancy# Instrumentation and Controls Commissioning engineer
* Nuclear* Permanent /
* Bridgwater* United Kingdom
* 28/04/26
* On site
* Share
** 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 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.
You will join your future team supporting one of the UK’s most significant nuclear construction programmes. This is a chance to work at the sharp end of commissioning, where safety, precision, and engineering judgement genuinely matter.  Alongside meaningful project work, you will benefit from:

* Hybrid Working Opportunity  
* Flexible working hours  
* Market Leading Pension scheme (8% company contribution / 4% personal contribution)  
* Professional fees covered fully  
* Employee referral scheme  
* Competitive Sick Pay – Support when you need it  
* Income Protection & 3x Salary Death-in-Service Cover  
* 24/7 Employee Support Line – Mental health, financial & legal help  * ... and more##

Job Description
** The Job Mission
** This is a hybrid role requiring regular presence in Bridgwater or Bristol, with relocation support available. Candidates must be within commutable distance or willing to relocate.

You will support early-stage commissioning activities, focusing on readiness, coordination, and technical assurance.
* Support preparation activities ensuring instrumentation systems are ready for commissioning execution
* Provide technical input into calibration activities alongside technicians and specialist suppliers
* Assist identification and assessment of spare parts requirements for commissioning phases
* Review as-built installations against design documentation, supporting system handover processes
* Contribute to development and review of commissioning procedures and test documentation
* Coordinate commissioning and calibration activities with internal teams and external suppliers
* Provide instrumentation expertise to mechanical and process teams during system troubleshooting
* Identify risks, report issues, and support mitigation and resolution activities
* Track progress of assigned commissioning tasks and maintain accurate status records
* Collaborate with multidisciplinary teams to ensure safe and efficient commissioning delivery
** 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 in Instrumentation, Control, Electrical or similar discipline
* Experience in commissioning or pre-commissioning within regulated industrial environments
* Strong understanding of PLC, DCS, and field instrumentation systems
* Ability to interpret P&IDs, loop diagrams, and control system documentation
* Experience supporting calibration, testing, or system validation activities
* Knowledge of commissioning processes, documentation, and quality requirements
* Ability to work effectively within multidisciplinary engineering teams
* Understanding of safety requirements within complex, safety-critical 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 +…