Commissioning Engineer

Overview

NRL are currently recruiting for a Mechanical or Process Commissioning Engineer to support commissioning activities with one of our major clients on a national infrastructure project. Reporting to a Commissioning Manager, this role offers the opportunity to play a key part in the safe and successful commissioning of critical Infrastructure systems within the UK.

Working in a highly regulated and collaborative environment, you will take ownership of multiple systems and contribute directly to commissioning strategy, planning, and execution. This is a hands-on role with significant technical responsibility and visibility, supporting delivery excellence across safety, quality, and performance.

What You’ll Be Doing

As a Mechanical or Process Commissioning Engineer, you will be responsible for the end-to-end commissioning of allocated systems. You will act as a subject matter expert for your systems, supporting commissioning readiness, execution, and system handover while ensuring compliance with safety and regulatory standards.

Key Responsibilities Will Include

• Taking ownership of 2–3 critical systems, developing in-depth system knowledge and acting as the technical subject matter expert.
• Producing and managing commissioning documentation, including procedures for testing, verification, and system validation.
• Supporting design reviews to ensure plant layouts and system configurations facilitate efficient and effective commissioning.
• Contributing to the detailed planning of commissioning activities, including ownership of defined commissioning test programmes.
• Participating directly in site-based commissioning activities, ensuring safe and successful commissioning of site systems.
• Reviewing and analysing commissioning results, producing clear and accurate technical reports summarising outcomes.
• Ensuring commissioning activities comply with nuclear, environmental, and industrial safety regulations, aligned with international best practice.
• Building strong working relationships with project delivery teams, site engineering, MEH functions, and plant operations to support integrated delivery.
• Promoting and maintaining high standards of safety, quality, and technical excellence throughout commissioning activities.

What You Could Have

• Degree-qualified in a relevant engineering discipline, or equivalent (e.g. HNC) with demonstrable experience as a mechanical and/or process commissioning engineer.
• Experience working within highly regulated industries, such as nuclear, utilities, oil & gas, or heavy manufacturing is advantageous.
• Baseline knowledge of EPR design or other PWR / power station designs.
• Strong technical background in process system testing, including flushing, pump testing, valve testing, and associated activities.
• Demonstrable experience working within robust safety and quality cultures.
• Excellent communication skills, with the ability to clearly convey complex technical information.
• Knowledge of radioactive waste systems and/or fuel route processes.