Electrical & Mechanical Commissioning Engineers
Data Center Project — Iowa, USA
Role Overview
We are seeking experienced Electrical and Mechanical Commissioning Engineers to support the commissioning of critical infrastructure on a large-scale data center facility in Iowa. This role covers the functional testing, verification, and handover of electrical and mechanical building services, ensuring all systems meet design intent, manufacturer specifications, and client performance criteria prior to go-live.
This position may be filled as two dedicated roles (Electrical Commissioning Engineer / Mechanical Commissioning Engineer) or as a combined E&M position depending on project phase and team structure.
Job Title
Electrical & Mechanical Commissioning Engineers
Location
Iowa, USA (on-site — data center campus; occasional travel between sites/pods may be required)
Contract Type
Full-time / Contract (specify duration if applicable)
Reports To
Commissioning Manager
Purpose of the Role
To plan, execute, and document the commissioning process for electrical and mechanical systems within a mission-critical data center environment, ensuring systems are installed, tested, and operating in accordance with design specifications, industry standards, and client Owner's Project Requirements (OPR).
Key Responsibilities
General / Cross-Discipline
- Execute Level 1–5 commissioning activities in line with industry standards (e.g., ASHRAE Guideline 0/1.1, IPMVP, or client-specific commissioning framework)
- Review and develop commissioning documentation: test scripts, method statements, functional performance tests (FPTs), integrated systems tests (IST)
- Witness and verify factory acceptance tests (FATs) and site acceptance tests (SATs)
- Identify, log, and track defects/snags through to closure using the project issue-tracking system
- Support Integrated Systems Testing (IST) across electrical, mechanical, controls, and BMS systems
- Liaise with design engineers, installation contractors, equipment vendors, and client representatives
- Ensure Health & Safety compliance throughout all commissioning activities (site-specific safety plans, LOTO procedures, permit-to-work systems)
- Compile and review O&M manuals, as-built documentation, and commissioning close-out reports
Electrical Scope
- Commission LV/MV switchgear, transformers, UPS systems, generators, static transfer switches (STS), and PDUs
- Verify electrical distribution systems including busway, panelboards, and critical power paths
- Support commissioning of generator paralleling systems and load bank testing
- Verify protective relay settings, arc flash studies, and selective coordination
- Test emergency power off (EPO) systems and fire alarm interlocks
Mechanical Scope
- Commission HVAC systems including CRAC/CRAH units, chillers, cooling towers, air handling units (AHUs), and pumps
- Verify mechanical piping systems: chilled water, condenser water, and glycol loops
- Commission BMS/controls integration with mechanical plant (Tridium Niagara, Metasys, or equivalent)
- Support economizer mode testing, redundancy (N+1/2N) failover testing, and airflow balancing
- Verify fire suppression and life safety system interfaces with mechanical plant
Essential Qualifications & Experience
- Degree or HND/HNC in Electrical, Mechanical, or Building Services Engineering (or equivalent experience)
- Minimum 3–5 years' experience in commissioning within mission-critical / data center environments
- Proven experience with Level 5 (Integrated Systems Testing) commissioning on hyperscale or colocation data centers
- Strong working knowledge of BMS platforms (e.g., Tridium Niagara, Johnson Controls Metasys, or similar)
- Familiarity with NFPA, NEC, ASHRAE, and Uptime Institute Tier standards
- Experience with FAT/SAT documentation and functional test script development
- Strong understanding of electrical single-line diagrams, P&IDs, and control sequence of operations (SOO)
Desirable
- CxA (Certified Commissioning Authority) or equivalent industry certification
- OSHA 30 certification
- Experience with major hyperscale clients (AWS, Microsoft, Google, Meta) commissioning frameworks
- Experience working in the Midwest US market / familiarity with Iowa AHJ requirements
Skills & Attributes
- Strong analytical and problem-solving skills under time-pressured programme constraints
- Excellent written and verbal communication for client-facing reporting
- Ability to read and interpret complex electrical and mechanical drawings
- Comfortable working at height, in plant rooms, and in live electrical environments (with appropriate PPE/training)
- Self-motivated with ability to work both independently and as part of a multi-disciplinary commissioning team
Work Environment
- On-site data center construction/commissioning environment
- Exposure to plant rooms, switchrooms, generator yards, and rooftop mechanical areas
- Shift work and weekend/out-of-hours testing may be required to align with critical system testing windows
- PPE required (arc-flash rated clothing, safety footwear, hard hat, etc.)
Physical Requirements
- Ability to work in varying environmental conditions (indoor plant rooms, outdoor equipment yards)
- Capable of climbing ladders, working at height, and lifting testing equipment as required