Field Service Engineer - BESS & Inverter Systems (Remote)

NES Fircroft; Massachusetts; Remote; USD 52,000 - 72,000; Full time

Job summary

NES Fircroft is partnering with a long-established power electronics manufacturer with 60+ years of experience, expanding its U.S. Field Service organization.

The role focuses on commissioning, troubleshooting and maintenance of advanced BESS and inverter technology, with remote work and travel to client sites. You will work directly with customers, EPCs and engineering teams to resolve issues, perform preventive maintenance, and support system startup, energization and testing.

Qualifications

• Experience in field service, commissioning, renewable energy, energy storage, or power electronics.
• Hands-on experience with BESS, inverters, PCS, or similar power conversion equipment.
• Strong AC/DC troubleshooting skills.
• Ability to read electrical schematics, one-line diagrams, and wiring diagrams.
• Willingness to travel Monday–Friday.

Responsibilities

• Commission, troubleshoot, maintain, and repair BESS and related equipment.
• Support system startup, energization, functional testing, and controls integration.
• Diagnose faults across AC/DC systems and power electronics.
• Perform preventive and corrective maintenance to maximise system reliability.
• Troubleshoot using schematics, wiring diagrams, system data, fault codes, and electrical test equipment.
• Work with customers, EPCs, and engineering teams to resolve technical issues.

Skills

AC/DC troubleshooting

Schematics reading

Customer-facing skills

Field service experience

Power electronics knowledge

Willingness to travel

Tools

Electrical test equipment

Job description

NES Fircroft is partnering with a long-established power electronics manufacturer with 60+ years of experience, expanding its U.S. Field Service organization.

The role focuses on commissioning, troubleshooting and maintenance of advanced BESS and inverter technology, with remote work and travel to client sites. You will work directly with customers, EPCs and engineering teams to resolve issues, perform preventive maintenance, and support system startup, energization and testing.