Senior I&C Commissioning Engineer (Nuclear) – Hybrid

Assystem UK Ltd; Bridgwater; Hybrid; GBP 70,000 - 90,000; Full time

Benefits offered by this job

Hybrid Working

Pension scheme

25 days annual leave

Job summary

Assystem UK Ltd is recruiting for a contractor to lead commissioning activities for complex instrumentation and control systems across critical nuclear plant systems. You will support safe, compliant system delivery through integrated commissioning phases and collaborate with multidisciplinary teams to ensure effective system handover.

The role requires experience in commissioning I&C systems, strong instrumentation knowledge, and the ability to drive improvements while adhering to nuclear

Qualifications

• Degree or HNC in a relevant engineering discipline.
• Experience commissioning systems in nuclear, power, petrochemical, or heavy industry.
• Strong instrumentation knowledge including impulse pipework and primary measurement elements.
• Experience commissioning pneumatic, hydraulic, and motor operated valve systems.
• Knowledge of process measurement methods: pressure, temperature, level, and flow.
• Experience interfacing with DCS, PLC, and plant protection systems.
• Understanding calibration methods, standards, and commissioning best practices.
• Experience commissioning and maintaining safety relief valve systems.
• Strong communication skills across multidisciplinary teams.

Responsibilities

• Lead commissioning activities for complex instrumentation and control systems on nuclear plant systems.
• 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.

Skills

Instrumentation knowledge

Valve systems

Process measurement

DCS/PLC interfaces

Communication

Education

Engineering degree or HNC

Job description

Assystem UK Ltd is recruiting for a contractor to lead commissioning activities for complex instrumentation and control systems across critical nuclear plant systems. You will support safe, compliant system delivery through integrated commissioning phases and collaborate with multidisciplinary teams to ensure effective system handover.

The role requires experience in commissioning I&C systems, strong instrumentation knowledge, and the ability to drive improvements while adhering to nuclear