Instrumentation and Control Engineer - Commissioning
Confirmed on the employer's own hiring board on Sep 24, 2026. First seen by Alion on Sep 23, 2026. Assystem scores B on the Alion truth index.
About Assystem
At Assystem, our mission is to accelerate the energy transition worldwide. Our 8,000 Switchers blend historical engineering expertise with cutting-edge digital technologies to drive this change. Join us in revolutionizing the energy sector and making a significant global impact.
Why Join the Community of Switchers?
Be part of one of the top three largest independent nuclear engineering companies globally. At Assystem, you'll contribute to groundbreaking projects that push the boundaries of innovation and engineering excellence. Join a community committed to driving forward the future of energy.
You will lead commissioning activities for complex instrumentation and control systems across critical nuclear plant systems.
Working within your future team, you will support safe, compliant system delivery through integrated commissioning phases.
Support installation and commissioning preparation for complex I&C systems
Execute onsite commissioning tests across plant systems and equipment
Review commissioning procedures and identify continuous improvement opportunities
Assess as-built installation status against approved engineering design documentation
Collaborate with multidisciplinary teams supporting effective system handover activities
Ensure commissioning activities comply with nuclear safety and licence requirements
Record commissioning data, test results, defects, and performance observations
Assess commissioning risks and implement appropriate mitigation strategies throughout activities
Support calibration, maintenance, and testing of instrumentation and actuator systems
Perform contractor surveillance ensuring commissioning quality and procedural compliance
Degree or HNC qualified within a relevant engineering discipline
Experience commissioning systems within nuclear, power, petrochemical, or heavy industry sectors
Strong practical instrumentation knowledge including impulse pipework and primary measurement elements
Experience commissioning pneumatic, hydraulic, and motor operated valve systems
Knowledge of process measurement methods including pressure, temperature, level, and flow
Experience interfacing with DCS, PLC, and plant protection systems
Practical understanding of calibration methods, standards, and commissioning best practices
Experience commissioning and maintaining safety relief valve systems within industrial environments
Strong communication skills conveying technical information clearly across multidisciplinary teams
Ability to set up, test, and troubleshoot complex I&C systems safely
Additional information
Join us at Assystem and be part of a global team delivering some of the most exciting and complex engineering projects in the world. This is your chance to shape the UK’s energy future while developing your expertise in a unique environment.
Benefits include:
Hybrid Working Opportunity
Flexible working hours
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
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.