Hays
Commissioning Engineer (Mechanical/Process)

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Our client is the UK's leading engineering and infrastructure services providers, employing multidisciplinary technical professionals across the UK and Globe. With a strong track record of delivering major projects in highly regulated sectors, the organisation plays a pivotal role in supporting the UK's energy future through some of the most significant infrastructure developments currently underway.
Your new role
An exciting opportunity has arisen for a Commissioning Engineer to join the Balance of Plant team on the Hinkley Point C project in Somerset. Hinkley Point C is the first new nuclear power station to be constructed in the UK in more than 20 years and will provide low-carbon electricity to approximately six million homes.
Reporting to the Commissioning Manager, you will play a key role throughout the commissioning lifecycle, combining technical engineering expertise with project delivery responsibilities. During the planning phase, you will review commissioning documentation, develop test specifications and prepare safety documentation. As the project progresses, you will support and lead commissioning activities on site, analyse test results and contribute to the safe transition of systems into commercial operation.
Key responsibilities include:
- Developing commissioning documentation and reviewing contractor-produced commissioning records.
- Supporting detailed commissioning, planning and taking ownership of assigned test programmes.
- Executing and supervising commissioning activities on site.
- Ensuring commissioning deliverables are completed safely, on time and in accordance with project requirements.
- Supporting the analysis of commissioning results and resolving technical issues.
- Working closely with contractors and project stakeholders to facilitate successful commissioning activities.
- Supporting contractual reviews, acceptance activities and project milestone achievement.
- Promoting a strong safety culture and ensuring compliance with all quality and operational requirements.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
What you'll need to succeed
To be considered for this role, you should have:
- A degree or equivalent qualification in a relevant engineering discipline.
- Strong technical knowledge of mechanical and process systems.
- Excellent engineering problem-solving and analytical skills.
- Experience working within commissioning, operations, maintenance or major project environments.
- Good IT literacy, including Microsoft Excel, SharePoint, Adobe review tools and Microsoft Word.
- The ability to learn and utilise specialist project software platforms.
- Strong communication skills and the ability to collaborate effectively with contractors and multidisciplinary teams.
- A delivery-focused mindset with a proven ability to achieve project objectives.
- Demonstrable experience working within robust safety and quality cultures.
- Knowledge of permit-to-work systems and lock-out/tag-out procedures within heavy industrial environments.


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The following would be advantageous:
- Previous experience within the nuclear, power generation or wider energy sector.
- Knowledge of UK Power Industry Electrical and Mechanical Safety Rules.
- Experience working on large-scale infrastructure or commissioning projects.
What you'll get in return
- Competitive salary and comprehensive benefits package.
- The opportunity to work on one of the UK's most significant infrastructure and clean energy projects.
- Long-term career development within a leading engineering organisation.
- Exposure to complex commissioning activities in a highly regulated environment.
- Ongoing training and professional development opportunities.
- The chance to contribute to the UK's low-carbon energy future while working alongside industry-leading professionals.
What you need to do now
If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.
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