Commissioning Engineer – Contract (Outside IR35)
Based in South Wales / Nationwide Travel
Contract Position | Outside IR35 | Competitive Day Rate
My client is looking for experienced Commissioning Engineers to support upcoming project delivery across the UK. This is a contract opportunity operating outside IR35, offering flexibility, strong rates, and the chance to work with a close-knit, expert-led team.
✅ Role Overview:
You’ll be responsible for the commissioning of HVAC systems and other building services on a range of commercial, industrial and healthcare projects. From functional testing to documentation and client sign-off, you’ll play a key part in ensuring all systems are installed and performing to spec.
Key Responsibilities:
Commission HVAC, mechanical, and/or BMS systems (depending on your specialism)
Produce and manage commissioning test documentation and reports
Liaise with clients, consultants, and contractors to ensure seamless project delivery
Identify and troubleshoot system performance issues
Support project handover and witness testing
️ Experience & Requirements:
Strong background in commissioning mechanical and/or BMS building services
Proven experience on large-scale commercial or public-sector projects
Ability to read and interpret technical drawings and specifications
Good communication and reporting skills
CSCS card and relevant H&S certifications
Willing to travel to sites across the UK as required
What’s On Offer:
Contract position (Outside IR35)
Competitive day rate
Flexible working with trusted and experienced directors
Varied, technically engaging projects
Supportive and professional working environment
Interested or know someone who might be? Apply now or reach out for a confidential discussion.