Field Applications Engineer – Residential and C&I

Enphase Energy

2d•Hybrid

About The Position

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. This role is based in Northern California and will primarily support partners located in this specific region. Candidates must reside in or be willing to relocate to Northern California to be considered.

Requirements

Bachelor’s degree in Mechanical, Electrical engineering, Power Systems, Renewable Energy, or related technical discipline, or equivalent practical experience.
3–5+ years of experience in solar PV, energy storage, power electronics, or field applications engineering, spanning residential and/or C&I.
Proven ability to troubleshoot complex, multi‑disciplinary technical issues.
Excellent communication and presentation skills.
Willingness to travel locally within the Bay Area and regionally as needed (~50-70%).
Solid understanding of residential and commercial PV system architectures, inverters and microinverters, battery energy storage systems, power distribution fundamentals (single‑ and three‑phase), and networking and monitoring systems.

Nice To Haves

Experience with Enphase products or similar distributed energy technologies.
Hands‑on background in installation, commissioning, or field service.
Familiarity with California AHJ and utility interconnection processes.
Experience supporting both residential installers and commercial EPCs.
Prior exposure to product feedback loops or cross‑functional technical roles.
NABCEP certification

Responsibilities

Provide pre‑sales technical guidance for residential and commercial projects, including system architecture and design, microinverter, battery, and energy management configuration, and 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), and 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, and 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 Sales, Technical Support, Product Management, and Engineering.
Provide structured field feedback based on real‑world installations, customer requirements, and regional constraints.
Support escalation cases where field insight and system‑level understanding are required.