Chiller Mechanic

Job Summary

The Chiller Mechanic provides operations, maintenance, and repair (OM&R) support for HVAC / R systems and Industrial Control Systems (ICS) across a military base in Qatar. The role includes inspection, troubleshooting, and repair of large-scale HVAC systems, chillers, and environmental control units. This position requires a Secret Security Clearance, extensive hands‑on technical experience, and the ability to work in a demanding overseas operational environment.

• Perform operation, maintenance, and repair (OM&R) for all HVAC / R systems, including chillers, air handlers, compressors, chilled water pumps, valve actuators, and sensors.
• Conduct preventive maintenance (in accordance with manufacturer specifications, technical orders, and applicable regulations).
• Operate a chemical water treatment program for closed-loop HVAC systems (chilled water systems).
• Manage a refrigerant recovery program, ensuring compliance with EPA and environmental regulations.
• Troubleshoot and repair complex HVAC systems, including CRAC units, DDC controls, and industrial cooling systems.
• Generate detailed maintenance and inspection reports following each service activity.
• Maintain a clean, safe, and compliant work environment aligned with Vectrus, OSHA, and USAF standards.
• Safeguard all government and contractor‑provided property, tools, and facilities.
• Participate in training, safety, and quality assurance programs as required.

• High School Diploma or equivalent.
• Minimum years of HVAC / R operations, maintenance, and repair experience with emphasis on industrial chilled water systems.
• Minimum years of experience with Computer Room Air Conditioning (CRAC) systems.
• EPA Universal Certification (Types I, II, and III).
• Citizen with active Secret Security Clearance.
• Valid Passport and Driver’s License (manual transmission capable).
• Must meet deployment readiness standards, including medical, psychological, and background checks.
• Completion of CBRN (Chemical, Biological, Radiological, Nuclear) defense training required post‑hire.

• Experience supporting Air Force or Department of Defense facilities.
• Knowledge of Aqua Force Carrier, York, Petra, and VRF split systems.
• Familiarity with Liebert CRAC units, Copeland refrigeration units, and VFD control systems.

• Proficiency in diagnosing and repairing industrial HVAC / R systems.
• Strong safety, compliance, and documentation discipline.
• Effective communication and teamwork skills.

• Knowledge of EPA, OSHA, and DoD technical standards.
• Technical report writing and inspection documentation.
• Experience working in high‑security or overseas environments.

• Aqua Force Carrier chillers (air‑cooled, … tons)
• York chillers (air‑cooled, … tons)
• VRF Split Units (… tons)
• Liebert CRAC units (chilled water / refrigerant types)
• Petra chillers / DX units (… tons)
• Copeland refrigeration units
• Variable Frequency Drives (VFDs)
• Chilled water supply pumps

• Frequent standing, bending, and lifting of up to … lbs.
• May require moving equipment up to … lbs. with assistance.
• Exposure to high‑temperature and outdoor environments.
• Work performed in secure, military‑controlled facilities.

• Medical, Vision, and Dental Insurance Plans.
• … Retirement Fund.
• Paid vacation and completion bonus (~$…)
• Overtime compensation for hours exceeding … per week.

A global provider of operational support services, training, and integrated mission solutions for government and commercial clients. The organization delivers excellence in logistics, aerospace, facilities, and technology support while maintaining a strong commitment to employee development, compliance, and workplace safety. About GTT GTT is a minority‑owned staffing firm and a subsidiary of Chenega Corporation, a Native American‑owned company in Alaska. As a Native American‑owned, economically disadvantaged corporation, we highly value diverse and inclusive workplaces.

Our clients include Fortune banking, insurance, financial services, technology, life sciences, biotech, utility, and defense companies across the ... and abroad. We look forward to helping you land your next great career opportunity! Job Number :

- LI-GTT LI-Onsite gttjobs