Senior HVAC Technician – Lead BAS & Systems Optimization

JLL; San Diego (CA); On-site; USD 70,000 - 100,000; Full time

Job summary

JLL is seeking an HVAC Technician to join our facilities management team in San Diego, CA. You will maintain, repair, and optimize HVAC systems across multiple client sites, using BAS and CMMS tools to ensure comfort and energy efficiency.

You will lead maintenance activities, perform diagnostics, and coordinate with engineers on system upgrades, while prioritizing safety and high-quality service for diverse client environments.

Qualifications

• High school diploma or equivalent with HVAC program completion.
• 3–5 years of hands-on commercial HVAC installation, maintenance, and repair.
• Knowledge of HVAC controls, electrical systems and mechanical components up to 480V.
• Experience with building automation systems (BAS) and CMMS.
• Valid driver's license and ability to travel between client sites as needed.
• Strong troubleshooting and problem‑solving skills with safety focus.
• Ability to read and interpret technical drawings and manuals.
• Physical ability to lift up to 75 pounds and work in various conditions.

Responsibilities

• Install, maintain, and repair HVAC equipment including chillers, boilers, rooftops, air handlers and ductwork.
• Perform diagnostic testing and troubleshooting to resolve performance issues.
• Execute preventive maintenance per manufacturer specs and JLL standards.
• Monitor BAS to optimize energy efficiency and comfort.
• Respond to emergency service calls with timely solutions.
• Replace and repair compressors, motors, pumps, valves, and control devices.
• Conduct system commissioning and startup for new installations.
• Document maintenance activities and performance data in CMMS.
• Collaborate with engineering teams on upgrades and energy projects.
• Lead maintenance technicians and schedule tasks.

Skills

Troubleshooting

Reading schematics

Customer service

Safety awareness

Team leadership

Education

High school diploma + HVAC program

Associate degree in HVAC technology

Tools

CMMS

BAS

EMS

Job description

JLL is seeking an HVAC Technician to join our facilities management team in San Diego, CA. You will maintain, repair, and optimize HVAC systems across multiple client sites, using BAS and CMMS tools to ensure comfort and energy efficiency.

You will lead maintenance activities, perform diagnostics, and coordinate with engineers on system upgrades, while prioritizing safety and high-quality service for diverse client environments.