Senior Field Service Tech – Critical Power Systems (UPS/ATS)

Liberty Personnel Services, Inc.; Dallas (TX); Remote; USD 90,000 - 120,000; Full time

Job summary

Liberty Personnel Services, Inc. is seeking a Lead Electrical Field Service Technician to support Critical Power Systems (UPS, ATS, Generators, Switchgear) across the United States. This remote role requires 90% travel to client sites including data centers, healthcare facilities, and manufacturing operations.

You will lead field service projects, install and maintain UPS and MV/LV equipment, interpret schematics, and mentor junior technicians while ensuring safety and customer satisfaction.

Qualifications

• 2+ years of field service experience with UPS systems, switchgear, power distribution equipment, transformers, generators, ATS, or battery systems.
• Experience in industries such as data centers, critical facilities, power generation, utilities, oil & gas, industrial manufacturing, or energy.
• Strong electrical troubleshooting skills and ability to read schematics.

Responsibilities

• Lead field service projects and manage onsite activities independently.
• Install, commissioning, calibrate, maintain, and repair UPS systems and MV/LV distribution equipment.
• Troubleshoot electrical and control system issues involving switchgear, breakers, transfer equipment, battery systems, transformers, and related components.
• Perform preventive maintenance and emergency service to minimize downtime.
• Conduct root cause analysis on electrical and power system failures.
• Read and interpret electrical schematics, one-line diagrams, and construction drawings.
• Supervise equipment startup, commissioning, and integrated system testing.
• Verify installations comply with electrical codes, standards, and project requirements.
• Coordinate equipment startup schedules with internal teams and customers.
• Prepare detailed service reports and recommend repairs, upgrades, and replacement parts.
• Serve as the primary technical contact for customers and provide exceptional service.
• Support Engineering, Production, Sales, and Service teams with technical expertise.
• Mentor junior technicians when appropriate.
• Participate in a rotating emergency on-call schedule.
• Follow all company and customer safety procedures.

Skills

Field service experience

Electrical troubleshooting

Read electrical schematics

Electrical testing equipment

Microsoft Office

Driver's license

Education

High school diploma or GED

Technical or vocational education

Tools

Electrical test equipment (multimeters)

Diagnostic tools

Job description

Liberty Personnel Services, Inc. is seeking a Lead Electrical Field Service Technician to support Critical Power Systems (UPS, ATS, Generators, Switchgear) across the United States. This remote role requires 90% travel to client sites including data centers, healthcare facilities, and manufacturing operations.

You will lead field service projects, install and maintain UPS and MV/LV equipment, interpret schematics, and mentor junior technicians while ensuring safety and customer satisfaction.