Field Service Engineer - UPS / Battery

Liberty Personnel Services, Inc.; Bridgewater Township (NJ); On-site; USD 70,000 - 95,000; Full time

Job summary

Liberty Personnel Services, Inc. is seeking a UPS Field Service Engineer to install, maintain, troubleshoot, and repair UPS systems and battery equipment across mission-critical environments in the Northeast.

You will perform preventive maintenance, diagnostics, installations, load tests, and emergency service, reading schematics and documenting findings.

This role requires strong electrical skills, customer service mindset, and willingness to travel regionally, with about 25% overnight travel.

Qualifications

• Experience in UPS field service or related technical field.
• Strong electrical diagnostic and problem-solving skills.
• Familiarity with electrical test equipment and hand tools.
• Excellent communication, customer service, and documentation skills.
• Ability to travel regionally and perform fieldwork at customer sites.

Responsibilities

• Perform preventive maintenance, troubleshooting, repairs, and emergency service on UPS systems and battery equipment.
• Install, commission, test, and replace UPS systems to ensure reliable operation.
• Read and interpret electrical schematics, wiring diagrams, and technical documentation.
• Prepare detailed service reports and recommend repairs or system upgrades.
• Coordinate with customers and internal teams to resolve issues and maintain equipment reliability.
• Travel to customer sites and participate in emergency service calls as needed.
• Follow safety procedures and manufacturer guidelines.

Skills

UPS field service

Electrical maintenance

Troubleshooting

Communication

Customer service

Documentation

Education

High school diploma or GED

Technical/vocational education in electrical tech

Tools

Electrical test equipment

Hand tools

Job description

UPS Field Service Engineer – Critical Power Systems

Location: New Jersey
Employment Type: Full-Time
Travel: Approximately 25% overnight travel throughout the Northeast, primarily between Washington, D.C., and Boston

About the Opportunity

We are seeking a skilled and motivated UPS Field Service Engineer to install, maintain, troubleshoot, and repair uninterruptible power supply (UPS) systems and associated battery equipment. This role supports customers in mission-critical environments, including data centers, healthcare facilities, commercial buildings, and industrial operations.

The ideal candidate has strong electrical troubleshooting skills, a customer-focused mindset, and the ability to work independently in the field while providing reliable power protection solutions throughout the Northeast.

Responsibilities

• Perform preventive maintenance, troubleshooting, repairs, and emergency service on UPS systems and battery equipment.
• Install, commission, test, and replace UPS systems to ensure reliable operation.
• Conduct battery inspections, testing, replacements, and load bank testing as required.
• Diagnose electrical faults, identify root causes, and recommend corrective actions.
• Service UPS equipment from major manufacturers, including APC, Eaton, and Vertiv.
• Read and interpret electrical schematics, wiring diagrams, and technical documentation.
• Prepare detailed service reports and recommend necessary repairs, replacement parts, and system upgrades.
• Coordinate with customers and internal teams to resolve technical issues and maintain equipment reliability.
• Follow electrical safety procedures, manufacturer guidelines, and applicable industry standards.
• Travel to customer sites throughout the Northeast and participate in emergency service calls as needed.

Qualifications

Required

• Experience in UPS field service, electrical maintenance, troubleshooting, or a related technical field.
• Strong electrical diagnostic and problem-solving skills.
• Familiarity with electrical test equipment and hand tools.
• Excellent communication, customer service, and documentation skills.
• Ability to work independently and manage field service assignments.
• Valid driver's license and satisfactory driving record.
• Ability to travel regionally and perform physical fieldwork at customer sites.

Preferred

• Experience with UPS systems, battery maintenance, and critical power equipment.
• Familiarity with APC, Eaton, Vertiv, or other major UPS manufacturers.
• Technical training or certification in electrical technology, electronics, or a related discipline.
• Experience with equipment installation, commissioning, or load bank testing.

Education

High school diploma or GED required.

Technical or vocational education in electrical technology, electronics, or a related field preferred.

What We're Looking For

Dependable and safety-conscious, with a commitment to quality workmanship.

Strong problem-solving skills and an ability to troubleshoot technical challenges.

Understanding of the importance of maintaining reliable critical power systems.

Organized, adaptable, and able to work independently.

Excellent customer service and communication skills.

Committed to maintaining a healthy work-life balance while meeting customer needs.