Data centre roles: an org chart across four hiring lanes

A data centre (data center in US usage) is built and run by four groups of people. They cover power and energy, construction and MEP, white space and IT infrastructure, and critical operations and commissioning. Each lane is hired at a different point in the build, and the order is set mostly by power.

What are the main data centre roles?

Data centre roles split by what they deliver. Power and energy roles secure electricity for the site, while construction and MEP roles design and build the shell and the mechanical, electrical and plumbing plant. White space and IT infrastructure roles fit out the data halls. Critical operations and commissioning roles prove the plant works and then keep it running.

The lanes overlap at handover points. The commissioning authority, for example, is selected at project inception and stays through turnover to operations (Uptime Institute Journal, May 2015). That guidance is older, but the sequence it describes is still the standard reference for mission critical commissioning.

Hiring pressure runs across all four lanes. More than half of respondents to Uptime Institute's 2026 survey report difficulty finding qualified candidates, and staff turnover remains a persistent problem (Uptime Institute, Jul 2026).

Why do power and energy roles start years ahead of construction?

Power is the longest lead item on most projects. The average wait for a grid connection in primary data centre markets exceeds four years (JLL, Jan 2026). A grid connection manager therefore has to be in place before the design is fixed.

Equipment adds a second clock. Power transformers averaged 128 weeks and generator step-up transformers 144 weeks in Wood Mackenzie's Q2 2025 survey (POWER, Jan 2026). Switchgear averaged 44 weeks over the same period (POWER, Jan 2026).

Those lead times mean the HV engineer and the person who places long-lead orders are design-stage hires, not construction-stage hires. Energy procurement is changing too: JLL reports that some operators are moving beyond power purchase agreements and funding their own generation because of utility interconnection delays (JLL, Jan 2026).

Who sits in the construction and MEP lane?

The design side is led by the engineer-of-record. Uptime Institute guidance gives the design engineer responsibility for specifying the sequence of operations that commissioning later tests (Uptime Institute Journal, May 2015).

The Uptime Accredited Tier Designer course is aimed at engineers-of-record, design-build senior project managers and owners' senior engineering representatives (Uptime Institute, ATD). That list doubles as a map of the senior design and delivery roles on a build.

Delivery is organised by package. Electrical and mechanical package managers run the contractors and vendors who install switchgear, UPS, generators and cooling plant. Contractors also physically operate equipment during commissioning procedures, so the electrical and mechanical leads stay on site well into testing (Uptime Institute Journal, May 2015).

Skilled trades sit beneath this lane and are part of the same squeeze. JLL lists limited availability of skilled trades among the effects of the sector's rapid expansion (JLL, Jan 2026).

What do white space and IT infrastructure roles cover?

White space is the data hall floor where servers, storage and network equipment sit. These roles fit out the halls once the shell and plant are ready, and they are usually hired by the operator or the tenant.

Cabling design is the exception, because it starts during design. BICSI describes its RCDD credential as one for professionals who plan, design, coordinate and support telecommunications distribution systems, including data centres (BICSI, RCDD).

Network engineers, data hall technicians and IT deployment managers follow at fit-out. Their work depends on power and cooling already being proven, so they arrive after the plant has been commissioned.

Who owns commissioning and critical operations?

Commissioning is owned by the commissioning authority (CxA), ideally a third party contracted directly to the owner. The CxA oversees Levels 1–3 and leads Levels 4–5, from factory witness tests to integrated systems testing (Uptime Institute Journal, May 2015).

Operations hiring starts much earlier than many owners expect. The same guidance says the owner should hire a facility manager and a facility supervisor during pre-design to represent operations (Uptime Institute Journal, May 2015). Operations staff then help write the Level 4 and Level 5 scripts and finalise procedures at turnover.

After handover, critical facilities engineers and shift teams run the site 24/7. Retention is the long-term risk: Uptime reports that operators' staff are often lured away by other operators (Uptime Institute, Jul 2026).

The data centre org chart by lane and build phase

The table below places twenty core roles by lane and by the build phase in which each role first becomes critical. Phases follow the sources linked in each row; where a role has no published timing, the phase reflects its dependency on another role in the table.

Lane	Role	What the role owns	First critical phase	Evidence
Power and energy	Grid connection manager	Utility connection application and capacity	Site selection	JLL, Jan 2026
Power and energy	Energy procurement manager	Power purchase agreements and on-site generation options	Site selection	JLL, Jan 2026
Power and energy	HV and substation engineer	Transformer, switchgear and substation specification	Early design	POWER, Jan 2026
Power and energy	Long-lead procurement manager	Orders and delivery slots for transformers and switchgear	Early design	POWER, Jan 2026
Construction and MEP	Owner's representative	Acts for the owner from project approval	Project inception	Uptime Institute Journal
Construction and MEP	Engineer-of-record	Design intent and sequence of operations	Design	Uptime Institute Journal
Construction and MEP	Project director	Delivery of the design-build programme	Design into construction	Uptime Institute, ATD
Construction and MEP	Electrical package manager	Switchgear, UPS, generators and distribution installation	Construction	Uptime Institute Journal
Construction and MEP	Mechanical package manager	Cooling plant installation	Construction	Uptime Institute Journal
Construction and MEP	Controls engineer (BMS and EPMS)	Monitoring and control of mechanical and electrical plant	Construction into commissioning	Depends on plant installation
White space and IT	Cabling designer (RCDD)	Pathways, spaces and structured cabling	Design	BICSI, RCDD
White space and IT	IT deployment manager	Data hall fit-out and rack deployment	Fit-out	Depends on commissioned plant
White space and IT	Network engineer	Network build within the data halls	Fit-out	Depends on commissioned plant
White space and IT	Data hall technician	Installation and day-to-day hardware work	Fit-out and operations	Depends on commissioned plant
Critical operations and commissioning	Commissioning authority	Commissioning plan, scripts and final report	Project inception	Uptime Institute Journal
Critical operations and commissioning	Electrical commissioning engineer	Electrical testing up to integrated systems testing	Construction to handover	Uptime Institute Journal
Critical operations and commissioning	Mechanical commissioning engineer	Cooling plant testing up to integrated systems testing	Construction to handover	Uptime Institute Journal
Critical operations and commissioning	Facility manager	Represents operations, then runs the site	Pre-design	Uptime Institute Journal
Critical operations and commissioning	Facility supervisor	Operating procedures and shift readiness	Pre-design	Uptime Institute Journal
Critical operations and commissioning	Critical facilities engineer	Day-to-day operation and maintenance of plant	Handover and operations	Uptime Institute, Jul 2026

How should hiring managers use the org chart?

Read the table from the left of the build, not from the top of the page. Roles marked site selection, project inception or pre-design shape decisions that later hires inherit, so delays in those seats push everything after them.

Plan for overlap rather than clean handovers. Package managers, commissioning engineers and the operations team all work on the same plant during testing, and each needs the others to be in post.

Treat the operations lane as permanent. Construction and commissioning roles end at handover, but critical facilities engineers and shift teams stay for the life of the site, which is where retention matters most.

For teams hiring across all four lanes, Workfully is an AI-native recruiting company. AI agents match each role to recruiters with proven data centre placements in that market, from one critical hire to a full site team (Workfully for data centres).