Data Center Construction: What Trades Are in Demand?

A typical hyperscale data center — the kind Microsoft, Amazon, Google, or Meta is building right now — costs $500 million to $2 billion per campus and contains more electrical, mechanical, and low-voltage systems per square foot than almost any other building type. These are not office parks.

Power systems include high-voltage switchgear, multiple levels of UPS backup, diesel generators, and complex power distribution units. Cooling systems include chillers, cooling towers, computer room air handlers, pumping loops, and precision controls. Data cabling runs in the tens of thousands of fiber and copper connections per building. All of it has to work the first time — downtime is unacceptable.

The result is enormous, sustained demand for every major construction trade. During the active build phase of a large campus, a single project can employ 800–2,000 tradespeople simultaneously.

Power is the core product of a data center. Everything else supports the power infrastructure. That means electricians — especially IBEW journeymen — are the most in-demand trade on any data center build and consistently earn the most.

Inside-wireman journeymen on hyperscale projects in Northern Virginia earn $48–$58/hr base through their local union. With overtime (50+ hour weeks are standard on accelerated builds), total weekly gross is commonly $2,800–$3,500. Add per diem for travel workers ($85–$100/day tax-free) and annual W2 income on a hot project runs $90K–$140K.

The work includes pulling feeder and branch circuit conduit, terminating medium-voltage switchgear, wiring UPS and battery systems, installing bus duct, and supporting startup and commissioning. The scope is deep and complex — which is why pay is high.

Cooling systems are as critical as power in a data center — servers produce enormous heat, and if the cooling fails, equipment starts failing within minutes. Building the cooling infrastructure requires HVAC mechanics, pipefitters (UA union), and sheet metal workers.

Pipefitters (UA Local) handle the chilled water and condenser water piping that connects chillers, cooling towers, and computer room air handlers. This is heavy pipe work — large diameter, high pressure, requiring certified welders and journeyman pipefitters. Pay runs $45–$65/hr for journeymen on DC projects.

HVAC mechanics install, start up, and commission the mechanical equipment itself — chillers, cooling towers, computer room air handlers (CRAHs), and precision cooling units. Entry-level on a DC construction crew starts around $28–$36/hr; journeyman mechanics earn $42–$60/hr in major markets.

Before any mechanical or electrical systems go in, the building goes up. Ironworkers erect the structural steel frames that form the skeleton of a data center building. On large hyperscale campuses where multiple buildings are being built simultaneously, ironworker crews are on-site for months.

Ironworkers also install cable tray, pipe hangers, equipment pads, and the overhead support structures that carry miles of conduit and cable ladder through a data center. This supporting ironwork role keeps them employed throughout the project — not just in the structural phase.

IRONWORKERS Local pay in major DC markets: $46–$62/hr for journeymen. Travel workers are actively sought in NoVA and Phoenix where local ironworker supply is stretched.

Every data center needs tens of thousands of copper and fiber cable runs — from the main distribution frames to every server rack in every data hall. Pulling this cable is physical, fast-paced work that does not require a journeyman license, making it the easiest entry point into data center construction.

Cable puller is the entry-level role. You will be pulling wire through conduit, dressing cables in racks, and supporting splicers and terminators. Starting pay is $22–$32/hr depending on market and contractor. It is not glamorous, but it gets you on site, into the union pipeline (if with an IBEW contractor), and building experience fast.

Low-voltage structured cabling technicians earn $28–$45/hr and handle the labeling, termination, and testing that makes the cable pulls usable. This is a skilled role that requires attention to detail and reading installation drawings.

Commissioning agents (CxAs) are the people who verify that every system in a data center actually works the way it is supposed to before the facility goes live. They run test scripts on power systems, cooling systems, fire suppression, and building controls — deliberately causing failures to verify that redundant systems take over correctly.

This is specialized work that requires deep knowledge of multiple systems and the ability to read and understand complex engineering documentation. As a result, it pays extremely well.

Entry-level commissioning technicians (with 3–5 years of trades experience) earn $75K–$100K. Mid-level CxAs earn $100K–$130K. Lead commissioning agents on large hyperscale projects earn $130K–$165K, often with project-based bonuses. Many commissioning professionals operate as independent consultants billing $90–$130/hr.

If you have no trades background at all, cable pulling is your entry point. No license required, hiring happens fast, and you get on active job sites where you can observe every other trade and figure out where you want to go next.

If you have a trades background in electrical or HVAC, get your OSHA 10, update your resume to highlight any large commercial or industrial work, and apply directly to Rosendin, M.C. Dean, MYR Group, or local IBEW contractors in your target market. Experienced tradespeople are getting offers within days in hot markets like Northern Virginia and Phoenix.

For commissioning, the path is typically 3–5 years in a relevant trade (electrical or mechanical) followed by a deliberate move to a commissioning contractor like Cx Associates, ATC, or Smith Environmental. Do not try to skip straight to CxA without real systems experience — the role depends on that foundation.