The data center industry is racing into the AI era with bigger campuses, tighter timelines, and unprecedented infrastructure complexity. But in this episode of The Data Center Frontier Show Podcast, 7x24 Exchange International founding member and Mission Critical Global Alliance (MCGA) board member Dennis Cronin argues the industry’s biggest constraint may be the one it talks about least: people.

Cronin’s message is direct: the “talent cliff” isn’t coming; it’s already here. Based on recent research into open roles, he estimates 467,000 to 498,000 openings in core data center positions (facilities and ops leadership, electrical, generator/UPS, HVAC, controls), plus another ~514,000 emerging roles tied to AI infrastructure, sustainability, and cyber-physical security—bringing the total to roughly one million jobs the industry needs to fill.

A major driver is what Cronin calls the “five-year experience trap”: employers require five years of experience even for entry-level roles, but newcomers can’t get experience without being hired. The result is widespread talent poaching, involving workers jumping from site to site for 10–20% raises, without expanding the overall labor pool.

Cronin also highlights a frequently missed reality in public policy debates: the job multiplier effect. While data centers may have lean direct staffing, they support a much larger ecosystem of contractors, service providers, and manufacturers, from generator and UPS technicians to security integrators and the electrical/mechanical supply chain, many of whom are already scrambling to hire.

On training, Cronin explains why company-run programs and commercial training aren’t enough on their own. Internal academies often produce siloed specialists trained for a single operator’s environment, while commercial courses, often ~$1,000 per day per person, are typically designed to upskill people already in the industry, not onboard new entrants.

MCGA’s strategy focuses on community colleges as the most scalable on-ramp: affordable programs, scholarships, and hands-on labs that can produce strong technicians in two-year degrees. Cronin cites programs at Cleveland Community College (NC), Northern Virginia Community College, and Southside Community College (VA), noting that dozens of schools are exploring data center curricula but funding remains a barrier.

Cronin’s proposed solution is a true workforce ecosystem: outreach, standardized curriculum, certification labs, structured apprenticeships, and employer commitments. He also advocates replacing the “five years” requirement with an entry-level certification that proves foundational knowledge, i.e. acronyms and language, reading one-lines, SOPs/MOPs, and crucially, safety and situational awareness in electrical and mechanical environments.

Finally, Cronin tackles the money question. With $60B in data centers announced this year, he says the industry needs a major, shared investment across operators, vendors, contractors, and manufacturers to fund training and scholarships at scale. The stakes are operational: in an era of gigawatt AI facilities and shrinking margins for error, workforce readiness is now a mission-critical issue.