Description RD&S is expanding our commercial and industrial CO2 refrigeration division, and we are seeking a highly experienced, field-proven Senior CO2 Refrigeration Service Technician to help build one of the strongest CO2 service teams in the region. We are looking for a highly specialized CO2 technician who can support customers professionally in the field, lead service work and field operations, and travel throughout the region as needed. Key Responsibilities: • Diagnose and repair complex CO2 refrigeration system issues • Troubleshoot: • Transcritical CO2 systems • Parallel rack systems • Gas coolers • Electronic expansion valves • Refrigeration controls • Mechanical and electrical system issues • Perform planned maintenance, emergency service, and customer support activities • Generate accurate service documentation and reporting • Serve as a senior technical representative to customers • Maintain strong communication throughout service and project execution • Provide technical recommendations and long-term service solutions • Support and mentor junior technicians when needed • Ensure projects and service work are completed safely, professionally, and efficiently • Support CO2 construction, startup, and commissioning activities as required • Assist project teams with system startup, controls verification, and operational testing • Coordinate with project managers, controls teams, and contractors during startup activities Requirements • Extensive hands-on experience with commercial and/or industrial CO2 refrigeration systems • Proven experience with: • CO2 transcritical systems • Advanced troubleshooting • Refrigeration controls integration • Parallel rack systems • Mechanical and electrical diagnostics • Ability to work independently with minimal supervision • Strong customer communication and professionalism in field environments • Strong written communication skills and experience preparing detailed field service and startup reports • Willingness to travel extensively based on customer and project demands • Commitment to safety, technical excellence, and high-quality workmanship • Startup and commissioning experience is strongly valued • EPA Certification required • Valid Driver’s License required • OSHA certification preferred Benefits: • Eligible for healthcare benefits on Day 1 of employment: • Medical, dental, vision, and prescription drug coverage • Flexible Spending Account (FSA), Dependent Care Spending Account (DCSA) • Health Savings Account (HSA) • Company-paid Life Insurance; Supplemental Employee, Spouse, and Dependent Life • Accident Hospital Indemnity • Company-paid Short and Long-term Disability Insurance • Pet Insurance • Employer matched 401(k) saving plan (with Roth option) • Weekly paycheck • Generous paid holiday schedule (11 days per year) • Paid time off (vacation + sick time) • Learning & Development programs • Employee Referral Bonus Program • Tuition Reimbursement EOE – Disability/Veterans