Field Applications Engineer – Residential and C&I; SoCal San Diego Area); Engineering

Field Applications Engineer – Residential and C&I (SoCal San Diego Area)
United States

Enphase Energy is a global energy technology company and a leading provider of solar, battery, and electric vehicle charging products. Founded in 2006, our innovative microinverter technology revolutionized solar power, making it a safer, more reliable, and scalable energy source. Today, the Enphase Energy System enables users to create, use, save, and sell their own power. Enphase is also one of the most successful and innovative clean energy companies in the world, with more than 80 million products shipped across 160 countries.

Join our dynamic teams designing and developing next-gen energy technologies and help drive a sustainable future!

The Field Applications Engineer – Residential and C&I Systems is a customer‑facing technical role responsible for supporting the successful design, deployment, commissioning, and operation of Enphase solar, storage, and energy management systems across residential and commercial applications in the Bay Area.

This role serves as the technical authority in the field, working with installers, EPCs, distributors, engineering firms, and internal teams to drive adoption, resolve complex system‑level issues, and ensure customer success. The ideal candidate brings strong power systems fundamentals, hands‑on field experience, and the ability to communicate clearly across a wide range of customer technical skill levels.

The role is based in the SoCal (Los Angeles) area and will primarily support partners in this region. Candidates must currently reside in the SoCal area or be willing to relocate to be considered

• Provide pre‑sales technical guidance for residential and commercial projects, including:
• System architecture and design
• Microinverter, battery, and energy management configuration
• Design best practices for rooftops, multi‑family, and light‑commercial sites
• Partner with Sales to support strategic accounts, regional installers, and C&I opportunities where technical differentiation is critical.
• Support proposal development through technical design review, feature clarification, and risk identification.
• Support deployments across Residential and C&I Applications
• Troubleshoot complex system‑level issues involving:
• Single‑phase and three‑phase electrical systems
• Power quality, grounding, and isolation
• Communications and monitoring (Wi‑Fi, Ethernet, cellular, PLC)
• Battery energy storage systems and control behavior
• Provide on‑site or remote support for commissioning, system validation, and performance optimization.

• Support residential and C&I energy storage applications, including:
• Backup power and resilience
• Self‑consumption and export control
• Time‑of‑use optimization and demand reduction
• Assist customers with California‑specific grid and interconnection requirements, including NEC, UL9540A, UL 1741 SB, IEEE 1547‑2018, California Rule 21 and Utility requirements (PG&E, SCE, SDGE, and other utilities)
• Serve as a regional resource on grid‑support functionality and system behavior in utility‑interactive environments.

• Provide on‑site support activities to guide installation partners to install and commission residential and C&I systems.

• Work with installation partners to identify, design, install and commission Pilot sites before general product launch

• Act as the technical bridge between customers and internal Enphase teams, including:
• Technical Support
• Product Management
• Provide structured field feedback based on real‑world installations, customer requirements, and regional constraints.
• Support escalation…