Senior Electrical Engineer — Inverter & Grid Integration

Mainspringenergy; Edison (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

Mainspring Energy seeks an experienced electrical engineer to own the selection, integration, configuration, and performance of commercial off-the-shelf inverters for the Linear Generator system. You will lead CAPA investigations and guide power delivery across customer circuits.

You will architect grid-interactive topologies, 1500 Vdc bus integration, and microgrid strategies while collaborating with mechanical, thermal, controls, test, and software teams to ensure safety and scalability.

Qualifications

• Bachelors or Masters in Electrical Engineering or related field.
• 8+ years of hands-on experience integrating industrial power conversion hardware or energy storage systems.
• Expert-level troubleshooting for complex AC/DC power systems with waveform analysis and fault diagnosis.
• Experience in high-voltage lab and field environments (400–800 Vac, up to 1500 Vdc) and NFPA 70E/LOTO practices.
• Proficiency in industrial communication protocols (Modbus TCP/RTU, CANbus, SunSpec) for power electronics control.
• Proven leadership in CAPA programs and mentoring engineers through product development.

Responsibilities

• Lead the selection, sizing, and configuration of grid-interactive inverters (100kW–1MW+).
• Serve as the principal technical escalation authority for grid stability and power quality issues.
• Architect next-gen power delivery topologies and 1500 Vdc bus integration.
• Drive microgrid integration, black-start sequences, and grid-edge compliance (CA Rule 21, IEEE 1547-2018).
• Develop qualification testing and integration for new power system architectures.
• Lead cross-functional design reviews to ensure performance, safety, and manufacturability.

Skills

Power electronics

Grid integration

CAPA leadership

Troubleshooting

High-voltage lab

Industrial communication protocols

Education

Electrical Engineering degree (Bachelors or Masters)

Tools

Modbus TCP/RTU

CANbus

SunSpec

SEL/Basler relays

Job description

Mainspring Energy seeks an experienced electrical engineer to own the selection, integration, configuration, and performance of commercial off-the-shelf inverters for the Linear Generator system. You will lead CAPA investigations and guide power delivery across customer circuits.

You will architect grid-interactive topologies, 1500 Vdc bus integration, and microgrid strategies while collaborating with mechanical, thermal, controls, test, and software teams to ensure safety and scalability.