RQ Construction is seeking a Commercial Refrigeration Technician to support mission-critical construction projects for the Department of Defense at Naval Station Mayport FL and surrounding areas . This role is embedded within our Mechanical team and will work on active federal construction sites, installing, commissioning, testing, and troubleshooting commercial refrigeration systems. In this position, you'll be hands-on with newly installed refrigeration systems-installing piping and components, brazing refrigerant lines, testing electrical and refrigeration circuits, performing start-up and commissioning activities, and troubleshooting system issues. Your work directly impacts system performance, project turnover timelines, and our ability to deliver safe, fully operational facilities to our federal clients. Key Responsibilities Install commercial refrigeration systems, including compressors, condensers, valves, controls, piping, and related components Read and interpret blueprints, mechanical drawings, refrigeration schematics, and manufacturer specifications Braze, solder, measure, cut, thread, and bend refrigerant piping according to project requirements Perform pressure testing, leak detection, evacuation, refrigerant charging, and system testing Test electrical circuits, components, controls, piping, and connections using appropriate test equipment Commission refrigeration systems and verify proper system balance, controls, and operation Troubleshoot and repair mechanical, electrical, refrigerant, and control-system issues Inspect completed installations and identify and correct deficiencies prior to project acceptance Perform refrigerant recovery and reclaiming in accordance with EPA Section 608 requirements Coordinate installation and work sequencing with other trades, subcontractors, and field supervision Follow all project and company safety requirements, including LOTO, PPE, hot-work procedures, and jobsite housekeeping Qualifications & Experience High school diploma or GED required Minimum of three (3) years of commercial refrigeration installation and/or service experience Strong knowledge of refrigeration systems, refrigerant piping, brazing, and system commissioning Working knowledge of electrical systems, controls, and basic electronics EPA Section 608 Universal Certification required OSHA 10-Hour certification required; OSHA 30 preferred

NCCER HVAC/R

certification or completion of a registered HVAC/R apprenticeship preferred Valid driver's license required Must be able to pass required background screening and drug testing for access to federal/military installations About Us RQ Construction is a national Design-Build contractor delivering complex projects for the Department of Defense and other federal agencies. With headquarters in Carlsbad, CA and regional operations across the country, our teams execute high-impact projects in locations including CA, WA, VA, NC, SC, FL, Puerto Rico, and Guantanamo Bay. Our backlog exceeds $1B, reflecting continued growth and long-term stability in the federal construction market. We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, creed, gender (including gender identity and gender expression), religion (all aspects of religious beliefs, observance or practice, including religious dress or grooming practices) marital status, registered domestic partner status, age, national origin or ancestry, physical or mental disability, medical condition (including cancer or a record or history of cancer, and genetic characteristics), sex (including pregnancy, childbirth, breastfeeding or related medical condition), genetic information, sexual orientation, veteran status, or any other basis or status protected by federal, state, or local law or ordinance or regulation.