Sr Field Service Technician - Refrigeration

ADP, Inc.; Roswell (GA); On-site; USD 65,000 - 95,000; Full time

Job summary

ADP, Inc. is seeking a Senior Field Service Technician specialized in refrigeration to support DX and CO₂ systems in commercial and industrial environments.

Based in Roswell, GA, you will service, diagnose, and commission DX and CO₂ installations, with a focus on Walmart projects, requiring strong hands-on capabilities and independence in the field. You will collaborate with project managers and OEMs, handle startups, and mentor junior technicians, while maintaining safety and compliance with

Qualifications

• 5–10 years of refrigeration experience, with a strong emphasis on DX systems.
• Hands-on experience with CO₂ (R744) refrigeration systems.
• Ability to work independently in customer facilities and travel as required.
• Valid driver’s license with acceptable driving record.
• Experience with mechanical and electrical troubleshooting.

Responsibilities

• Service, diagnose, and repair DX and CO₂ refrigeration systems, including rack systems and transcritical CO₂ applications.
• Perform system startups and commissioning for new and retrofit installations.
• Troubleshoot mechanical, electrical, and control-related issues.
• Interpret P&IDs, wiring diagrams, schematics, and control sequences.
• Document service activities, findings, and corrective actions using service reports.
• Work safely and in compliance with EPA, OSHA, and company safety standards.
• Collaborate with project managers, service coordinators, OEMs, and customers.
• Provide technical support and mentorship to 1st tier support technicians when needed.

Skills

DX Refrigeration

CO2 Refrigeration

Troubleshooting

Independent Field Work

On-call Travel

Education

Vocational/Technical training

Tools

Danfoss

Emerson

Carel

Hussmann

Hillphoenix

Job description

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Sr Field Service Technician - Refrigeration

Full-time Roswell, GA, US

30+ days ago Requisition ID: 1636

Job Summary

Experienced Senior Refrigeration Technician with strong hands-on expertise in DX refrigeration systems and CO₂ (R744) refrigeration. This role supports commercial and industrial refrigeration installations, service, troubleshooting, startups, and commissioning focus on Walmart business. The ideal candidate is self-sufficient in the field, safety-focused, and comfortable working on advanced refrigeration and control systems.

Key Responsibilities

• Service, diagnose, and repair DX and CO₂ refrigeration systems, including single systems, rack systems, and trans critical CO₂ applications
• Perform system startups, commissioning, for new and retrofit installations
• Troubleshoot mechanical, electrical, and control-related issues, including compressors, valves, sensors, gas coolers, and electronic expansion devices
• Interpret P&IDs, wiring diagrams, schematics, and control sequences
• Properly document service activities, findings, and corrective actions using service reports
• Work safely and in compliance with EPA, OSHA, and company safety standards
• Collaborate with project managers, service coordinators, OEMs, and customers
• Provide technical support and mentorship to 1st tier support technicians when needed

Required Qualifications

• 5–10 years of refrigeration experience, with a strong emphasis on DX systems
• Demonstrated, hands-on experience with CO₂ (R744) refrigeration systems
• Strong working knowledge of:
  • Commercial rack systems
  • Mechanical and electrical troubleshooting
  • Refrigeration controls and sensors
• Ability to work independently in customer facilities
• Valid driver’s license with acceptable driving record
• Willingness to work on-call or travel as required

Preferred Qualifications

• Startup and commissioning experience for CO₂ systems
• Experience with OEM platforms such as Danfoss, Emerson, Carel, Hussmann, or Hillphoenix
• Vocational, technical school, or apprenticeship background
• Experience in industrial, grocery, cold storage, or data center environments

Physical & Work Requirements

• Ability to lift up to 50–75 lbs
• Ability to work at heights, in mechanical rooms, and outdoor environments
• Comfortable working in cold and hot conditions