CoolSys is seeking a skilled Journeyman Refrigeration Technician to install, service, and maintain commercial and industrial refrigeration systems for our HVAC wholesale customers. In this hands-on field role, you'll troubleshoot rack systems, walk-ins, and reach-ins; perform preventive maintenance; and ensure safe, efficient, and reliable operation for mission-critical environments. You'll work independently and with a collaborative team, using advanced HVAC-R tools and controls while upholding a safety-first, customer-focused culture. CoolSys offers ongoing technical training, growth opportunities, and the chance to support energy-efficient, sustainable refrigeration solutions nationwide. Responsibilities Install, start up, and commission commercial refrigeration systems for retail and industrial customers Diagnose and repair rack, walk-in, and reach-in systems to ensure reliable performance Perform preventive maintenance, inspections, and documentation according to Cool Sys standards Troubleshoot electrical, mechanical, and control issues, recommending effective solutions Collaborate with customers, dispatch, and project teams to deliver safe, timely, and quality service Follow all safety procedures, environmental regulations, and company policies on every job Required Skills Commercial refrigeration systems Rack and parallel systems Scroll and screw compressors Electrical troubleshooting Brazing and pipefitting EPA refrigerant handling Preventive and predictive maintenance Reading blueprints and schematics Control systems & EMSSafety procedures and OSHA compliance