Facilities HVAC Technician IV - Senior Lead

Firefly Aerospace is a space and defense technology company on a mission to reliably and repeatedly launch, land, and operate space systems from Earth to the Moon and beyond. As the partner of choice for critical space missions, Firefly is the first commercial company to launch a satellite to orbit with 24-hour notice and the first company to achieve a successful Moon landing. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.
The Facilities HVAC Technician IV – Senior Lead is a hands-on technical leadership role responsible for the reliability, troubleshooting, maintenance, commissioning, and continuous improvement of mission-critical HVAC and mechanical systems across Firefly’s Texas facilities.
This position serves as the senior technical escalation point for complex HVAC, refrigeration, controls, BAS, and environmental system issues. The Technician IV provides technical guidance and mentorship to HVAC Technicians I–III, leads complex troubleshooting and root cause corrective actions, and supports maintenance, reliability, projects, commissioning, and contractor oversight.

The Technician IV operates beyond the Technician III level by:
• Taking ownership of complex HVAC issues through resolution.
• Leading critical troubleshooting and RCCA activities.
• Mentoring and providing technical direction to junior technicians.
• Identifying reliability risks and recurring failures before they impact operations.
• Recommending equipment replacement, redundancy, and system improvements.
• Maintaining high standards for safety, workmanship, troubleshooting, and documentation.
• Providing technical oversight of contractors and supporting equipment commissioning.
• Communicating technical risks and recommendations to Facilities leadership.
This is a technical leadership role and does not inherently include formal people-management responsibilities.

Physical Requirements
Ability to stand, walk, bend, kneel, climb ladders, work from elevated platforms, use HVAC tools and diagnostic equipment, lift/carry required materials, and work indoors and outdoors in active industrial and aerospace environments while wearing required PPE.

Additional Requirements
This position is based at Firefly’s rocket production and test facility in Briggs, Texas, north of Cedar Park. Participation in an on-call rotation is required. ITAR requirements apply.