Lead Reliability Engineer - Mechanical (Data Center Cooling)

Location: PHX-03, United States

Company

hirify.global operates a fleet of hyperscale data centers and develops infrastructure focused on reliable mechanical and cooling systems.

What you will do

• Lead advanced thermodynamic, fluid-dynamic, and metallurgical investigations into critical fleet incidents.
• Convert forensic findings into corrective actions, engineering change orders, and fleet-wide reliability requirements.
• Review construction drawings, contracts, equipment specifications, and operational standards.
• Conduct programmatic audits of active data center sites for compliance with runbooks, operating conditions, and maintenance standards.
• Design physical tests in the Advanced Cooling Lab and integrate mechanical failure data into a high-fidelity system simulator.
• Advise senior leadership and cross-functional executives on mechanical vulnerabilities and strategic reliability initiatives.

Requirements

• 10+ years of advanced mechanical industry experience, or an advanced degree in Mechanical Engineering and 6+ years of experience.
• Experience with hyperscale data center infrastructure, complex hydronic loops, and large-scale chiller plants.
• Expert knowledge of critical system design, operations, repair, maintenance, and troubleshooting.
• Strong understanding of data center cooling technologies, including CDUs, CRAHs, CRACs, AHUs, chillers, and related equipment.
• Ability to analyze sequences of operations, design parameters, alarms, and performance trends to identify systemic architectural flaws.
• Ability to create engineering standards and programs that transform local site knowledge into fleet-wide operational policy.

Culture & Benefits

• Medical, dental, and vision insurance.
• HSA with employer contribution and health and dependent-care FSA options.
• 401(k) plan with company match.
• Paid time off and holiday pay.
• Short-term and long-term disability, life insurance, and optional supplemental coverage.
• Employee assistance, Wellhub gym membership, wellness programs, and professional development opportunities.