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

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!
About the role
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.
Location Requirement
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
What you will do
Pre‑Sales Technical Support
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.
System Design, Commissioning & Troubleshooting
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.
Storage & Grid Integration
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.
On-site Support – White Glove Program
Provide on-site support activities to guide installation partners to install and commission residential and C&I systems.
New Product Launch Support
Work with installation partners to identify, design, install and commission Pilot sites before general product launch
Cross‑Functional Collaboration
Act as the technical bridge between customers and internal Enphase teams, including:
Sales
Technical Support