Mechanical Systems Technician (HVAC & Boiler Operations)

ENERGY SYSTEMS GROUP is looking for a Mechanical Systems Technician (HVAC & Boiler Operations) to join our Operations Services team at our Coronado Naval Base Energy Center.

The Mechanical Systems Technician performs skilled operations, maintenance, troubleshooting, and repair of boiler, HVAC, and mechanical systems to ensure safe, reliable, and efficient facility performance.

The essential functions of the position include :

• Operate, monitor, and maintain high-pressure steam boilers, hot water boilers, split systems, and HVAC units
• Interpret readings on gauges, meters, and digital controls to ensure safe, efficient operation
• Adjust system controls to meet real-time heating, cooling, and process demands
• Record operational data in logs and digital work order systems
• Maintain boilers, compressors, air handlers, pumps, and related equipment
• Conduct water treatment for boiler and other water systems; analyze results and adjust chemicals as required
• Perform HVAC diagnostics including refrigerant pressure checks, airflow measurements, and electrical testing
• Maintain steam lines, traps, strainers, insulation, and distribution systems
• Service and maintain split systems, package units, ventilation systems, and air distribution components
• Perform diagnostic tests on lubricants, fuels, oils; sample and submit for analysis
• Maintain air compressors, pneumatic systems, and associated controls
• Troubleshoot mechanical and electrical issues to ensure minimal downtime
• Perform general building maintenance including basic carpentry, plumbing, and electrical tasks
• Work rotating on-call schedule including nights, weekends, and holidays
• Respond to after-hours service calls to maintain operational readiness
• Document work progress and effectively communicate system conditions to supervisors
• Follow safety protocols, obtain permits, conduct hazard analyses, and ensure PPE compliance
• Perform other duties as assigned by management

Your background includes :

A bonus to have :

What we bring to you :

We want you to know :

ESG is an Equal Employment Opportunity Employer. We value talent and understand that our colleagues allow us the opportunity to deliver an exceptional customer experience. We achieve our goals through teamwork and conduct our business with integrity. Join our world-class team to provide mission-critical infrastructure solutions for K-12 schools and universities to local, state and federal government agencies and more.

The Company shall abide by the requirements of 41 CFR

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