M&E Commissioning Manager: Hiring Checklist

You need someone who will take an installation from site completion to a reliable, handed-over state: planned tests completed, FAT and SAT passed, O and M packs tidy, client sign-off achieved. Commissioning management is where technical know-how meets programme control and stakeholder management, and getting it wrong costs time and money.

This post gives you a practical, search-led hiring checklist for recruiting a Commissioning Manager in Mechanical and Electrical, covering qualifications and accreditations to verify, core technical skills, scenario interview tasks, practical tests, a sample job spec and salary band, a 30/60/90-day onboarding plan, CV and reference red flags, and quick candidate tips.

What to verify first: qualifications and accreditations

Formal qualifications

• Engineering qualification: HNC, HND or degree in mechanical, electrical or building services engineering, or equivalent vocational route.
• Professional registration: Chartered Engineer (CEng) or Incorporated Engineer (IEng) where applicable, or membership of CIBSE or IMechE for senior roles.
• NVQ/City and Guilds: NVQ Level 3/4 or industry-specific City and Guilds certificates for candidates from a trades-to-management background.

Site and technical accreditations

• CSCS or equivalent: Valid card appropriate to role level, for site access and vetting.
• SMSTS or SSSTS: Management-level site safety training for those supervising teams.
• PASMA, IPAF, CPCS: Plant and access tickets where the role requires mobilisation of temporary plant or MEWP management.
• Sectors-specific: For rail sites, PTS and CRO cards, or for power and renewables, SC clearance specifics and technical certificates. Link to our Rail and Power and Renewables pages for sector detail.

Core technical skills to test

• Electrical commissioning: LV and HV testing knowledge, loop and polarity checks, insulation and continuity tests, earthing verification, interpretation of schematics and wiring diagrams.
• Mechanical commissioning: Pump and valve functional testing, system flushing, pressure tests, hydraulic balancing, sequence testing for HVAC and chilled/hot water plant.
• Controls and BMS/PLC: Functional verification of building management systems, fault logging, PLC ladder logic understanding for sequencing and interlocks.
• FAT and SAT delivery: Preparing FAT test packs, witnessing factory tests, structuring SAT on site, and managing witness tests with clients and end users.
• Handover and documentation: O and M pack assembly, as-built drawings, commissioning records, certificate logging, warrantee handover and snag closure.
• Regulations and standards: Familiarity with BS 7671, CIBSE commissioning guides, Building Regulations Part L where relevant, and CDM client/PC duties for health and safety.

If the role also covers ongoing EV charging or low-voltage distribution work, our guide on Hiring Energy Coordinators for EV Charging covers that specialist skillset in more depth.

Interview and assessment: scenario tasks and practical tests

Scenario-based interview tasks

• Commissioning plan review: Give a candidate a stripped-down project scope and ask them to outline the commissioning strategy, milestones and resource plan in 20 minutes, then present it back to you.
• Stakeholder scenario: Present a clash between programme pressure and client-required witness testing, ask how they will re-sequence tests, reallocate resources, and risk-manage delays.
• Fault escalation: Describe a repeated control fault on a VRF plant during SAT, ask the candidate to explain the troubleshooting steps, temporary mitigations and reporting to client and contractor.

Practical tests

• Loop diagram exercise: Provide an electrical schematic and ask for a written test plan for a loop check, including test instruments and pass criteria.
• O and M critique: Supply a sample O and M pack and ask them to identify gaps, missing certificates or non-compliance items they would reject.
• Live witness or simulation: Where possible, run a witnessed SAT simulation or a timed BMS fault-finding exercise using a test rig or software emulator.

Sample job specification

Use this as a base and tailor it to sector and project size.

Title: M and E Commissioning Manager

Reporting to: Senior Project Manager

Key responsibilities:

• Develop and implement commissioning plan: Produce FAT and SAT programmes, resource matrices and test procedures.
• Lead on-site commissioning team: Coordinate subcontractors, oversee test execution, manage snag lists and client witness testing.
• Documentation and handover: Compile O and M packs, as-built records and certificates for client handover.
• Compliance and safety: Ensure tests conform to BS, CIBSE guides and project-specific procedures, maintain HSE and CDM compliance.

Essential: HNC or degree in engineering, CSCS card, SMSTS, proven FAT/SAT experience, BMS/PLC understanding. Desirable: Chartered membership, PTS for rail, sector-specific certs.

Typical salary band

For the South West and wider UK market: expect £50,000 to £75,000 for experienced Commissioning Managers. Senior appointments on large or high-risk programmes, or with specialist sectors such as power or rail, can pay from £75,000 to over £90,000 depending on security requirements and project complexity. For contract roles use daily or weekly rates reflective of responsibilities and mobilisation demands.

30/60/90 day onboarding plan

• Days 0 to 30: Introductions to project team and client, review of design information and current snag list, complete site inductions, assess current commissioning documentation and immediate priorities.
• Days 31 to 60: Implement revised commissioning programme, schedule FATs and SATs, start systematic execution of systems critical to handover, weekly reporting to PM and client.
• Days 61 to 90: Drive completion of outstanding SATs, close snags, deliver final O and M packs and client training sessions, obtain practical sign-offs and lessons learned report.

Common CV and reference red flags

• Vague outcomes: CVs listing responsibilities without measurable results on handovers, reduced defects or programme improvements.
• Short job spells: Multiple short contracts with no clear reason or frequent gaps without explanation.
• Missing certificates: Inability to produce essential site cards, SMSTS or technical certs at interview stage.
• References that avoid technical detail: Generic praise without examples of commissioning leadership or FAT/SAT delivery can indicate overstated experience.

Short candidate section: how you will stand out

If you are seeking work as a Commissioning Manager, make it easy for recruiters and employers to see your value. Build a commissioning portfolio with concise evidence and practical items:

• Project summary sheet: One page per project with scope, systems commissioned, team size, key tests completed, and measurable outcomes such as snag closure rate or client acceptance date.
• Sample test packs and O and M extracts: Redacted real examples showing your role in procedures and certificates.
• Witness statements: Short notes from clients or lead contractors confirming delivery of FAT/SAT and handover.
• Digital presence: Keep an up-to-date LinkedIn profile, and register on Harbron Recruit's Candidates page so we can match you to live roles on our Jobs board.

Quick closing tips for employers

• Test for delivery not theory: Use scenario tasks and ask for real examples with dates and outcomes.
• Check documentation quality: A good commissioning manager produces tidy, complete O and M packs before you ask.
• Match sector skills: Rail, power and healthcare have specific access and certification needs. Refer to our sector pages for specialist hires, for example Building, Construction and Housing.
• Consider related roles: if programme control matters more than hands-on testing, see our guide on How To Hire A Construction Planner; for senior oversight on a fixed-term basis, see When to hire an interim programme director for construction.

Call to action

If you need a Commissioning Manager who can deliver sign-off and tidy handover, call us to discuss your vacancy or register the role on our Employers portal. Employers call 01626 333105 or email info@harbronrecruit.co.uk. Candidates, browse current roles or register via our candidates page or the jobs board.

FAQs

What level of commissioning experience do you need for complex M and E projects?

Look for proven FAT and SAT delivery on similar systems and project scale, documented handovers, and evidence of managing subcontractor teams and client witness sessions. Sector-specific access cards and safety training are essential.

Do you need chartered engineers for commissioning manager roles?

Chartered status is beneficial for large or highly technical projects, but hands-on commissioning experience, documented results and safety competence can be equally important for operational delivery roles.

How long does a typical commissioning programme take on a medium sized project?

It depends on system complexity, but allow several weeks for mechanical and electrical trials, then staged SATs and client training. Building services can add further time for balancing and optimisation.

Can Harbron help with short term commissioning contractors?

Yes. We supply permanent, temporary and contract staff across construction sectors. Contact us on 01626 333105 or info@harbronrecruit.co.uk to discuss availability.