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JLL Logo JLL · IT - Administration

HVAC Mechanical Engineer

United States, Aurora 93000.00 - 99840.00 USD / Year · Job Posted February 21, 2026
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Job Description

JLL is seeking an experienced Data Center Operating Engineer with a strong background in HVAC and mechanical systems to support critical operations at a major data center facility. This role is essential to maintaining reliable, uninterrupted service and ensuring the facility’s infrastructure operates at peak efficiency.

Job Responsibility

  • Oversee the maintenance, monitoring, and continuous operation of all building systems, with a particular focus on complex HVAC infrastructure
  • Perform scheduled preventive maintenance (PM) tasks
  • Respond rapidly and effectively to unplanned equipment issues by conducting corrective maintenance, diagnosing root causes, and executing timely repairs
  • Troubleshoot and resolve system alarms and performance issues
  • Operate medium voltage (MV) switchgear, low voltage (LV) switchgear, and emergency power generators
  • Accurately document operational readings and maintenance activities
  • Ensure full compliance with safety protocols
  • Support incident response and facility emergency procedures
  • Manage work orders, vendor coordination, and customer-facing service tickets.

Requirements

  • Minimum of 5 years of direct experience maintaining and repairing HVAC and mechanical systems in a data center or similarly critical facility
  • Demonstrated expertise in preventive and corrective maintenance, troubleshooting, and diagnostics across a variety of mechanical systems: chilled water systems, DX units, CRAC/CRAH equipment, boilers, pumps, and controls
  • Experience supporting building electrical systems, including UPS systems, generators, and switchgear
  • Proficient with MS Office (Word, Excel, Outlook), Google Suite applications, and computerized maintenance management systems (CMMS)
  • Strong communication skills, both written and verbal, with the ability to document technical information clearly
  • Ability to traverse large facility campuses and perform repetitive walking, climbing, bending, kneeling, lifting (minimum of 50 lbs.), stooping, and working overhead
  • Comfortable accessing rooftops and using ladders (up to 30 ft)
  • Willingness to work assigned shifts, including holidays, and respond to emergencies as required
  • Candidates must be authorized to work in the United States without sponsorship.

Nice to have

  • Possession of a Universal EPA 608 certification
  • Training in NFPA 70E electrical safety standards.

What we offer

  • 401(k) plan with matching company contributions
  • Comprehensive Medical, Dental & Vision Care
  • Paid parental leave at 100% of salary
  • Paid Time Off and Company Holidays
  • Early access to earned wages through Daily Pay.
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