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Commissioning Engineer - London
Commissioning Engineer – London
Oleson specialise in delivering high quality talent and solutions that enhance the capabilities and operational excellence of our global customers. We are focused on matching the dynamic needs of Data Centre and Life Science clients with skilled professionals, thereby driving innovation and growth in these critical sectors.
About the Role
We’re seeking a hands-on, detail-driven Commissioning Engineer to join our high-performance team. In this role, you'll be responsible for the commissioning, testing, and troubleshooting of Building Management Systems (BMS) and cooling systems in a Data Centre environment. This is a contract position with an immediate start.
Key Requirements
- Must be eligible to work in the UK (no sponsorship is provided).
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.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
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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Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
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.
Responsibilities
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Commissioning & Testing
- Execute Level 1–4 testing of systems, including Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT).
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PLC Automation & Troubleshooting
- Develop, debug, and refine PLC logic for BMS control systems.
- Perform Modbus testing in line with register mapping specifications.
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Sensor & Field Device Support
- Troubleshoot temperature, humidity, and pressure sensors as well as transmitters to ensure accurate system feedback.
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Test Script Development
- Create, document, and execute detailed test scripts to validate system functionality and performance across all commissioning levels.
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Point-to-Graphic Verification
- Prepare and review point lists (hardwired and high-level interfaces), controls, alarm logs, trend data, and graphic screens.


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Wiring & Start-Up Checks
- Perform physical wiring inspections.
- Verify field device integrity.
- Support system start-ups and plant integration.
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HVAC System Support
- Provide automation and commissioning support for chillers, AHUs, and ventilation systems.
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System Diagnostics
- Identify, analyse, and resolve system faults.
- Recommend fixes and improvements.
- Offer technical support to wider project teams.
Requirements
- A technical qualification in Electrical, Mechanical, Mechatronics, Automation, or a related field.
- 3+ years’ experience with programming PLCs or automation systems.
- Ability to read technical drawings, schematics, and system architecture documents.
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