Senior Embedded Firmware Engineer - BESS

Enphase Energy; Austin (TX); On-site; USD 90,000 - 135,000; Full time

Benefits offered by this job

Bonus

Equity

Benefits

Job summary

Enphase Energy is seeking an embedded software/firmware engineer to design and implement software for Solar and storage products. You will work with hardware teams to define firmware architecture and drive integration across system levels.

The role requires hands-on development, testing, and mentoring of junior engineers in a fast-paced environment, with on-site collaboration in Austin.

Qualifications

• B.E./B.Tech in Electrical Engineering, Computer Engineering or Computer Science, 5+ years in embedded software/firmware.
• M.S./M.Tech with 3+ years of experience in embedded domains.
• Proficiency in Python for automation.
• C programming for real-time apps; RTOS experience.

Responsibilities

• Develop requirements and code for system integration, batteries and inverters.
• Create board and system level embedded software for solar/battery products.
• Document firmware architecture with hardware/system engineers.
• Guide EVT testing with firmware engineers to verify sanity.
• Work with SDVT teams to test and troubleshoot prototypes.
• Mentor junior engineers across residential and commercial product domains.

Skills

Python

C

RTOS

ARM Cortex-M4/7

Zephyr RTOS

GCC

GDB

Eclipse

GNU Make

Confluence

JIRA

Git

Education

B.E./B.Tech in EE/CE/CS

M.S./M.Tech

Tools

Confluence

JIRA

Git

GCC

Job description

Description

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 make, 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.

Description

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 make, 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!

This role at Enphase requires working onsite only.

About the role

This position is part of the core Engineering R&D group, which focuses on launching Residential and Commercial/Industrial storage products. Our team is responsible for designing, prototyping, and launching Storage Systems at scale — cutting edge solutions that integrate Enphase’s core technologies like IQ series microinverters, home energy ecosystem of EV chargers, combiners, and more that are best in the market to deliver complete solutions for our consumers. We’re looking for a motivated individual who thrives in a fast‑paced environment and can collaborate closely with the team to develop and deliver innovative solutions.

What you will do

• Developing requirements, code for system integration, batteries and inverters
• Develop board level and system/product level embedded software for solar and battery‑based products.
• Work with hardware and system engineers to conceptualize and document the firmware design architecture for implementation.
• Leverage AI usage to develop EVT (engineering validation testing) by the firmware engineers to verify sanity
• Work with cross function teams like SDVT (system design validation testing) engineers to test and troubleshoot prototype designs.
• Mentor junior engineers and be able to work on residential and commercial product domains seamlessly

Who you are and what you bring

• B. E/ B. Tech in Electrical Engineering or Computer Engineering or Computer Science, 5+ years’ experience in a similar (non‑academic) role as an embedded software or firmware engineer
• M.S/ M. Tech with 3+ years' of experience
• Proficiency scripting language Python to automate software development workflows.
• Expertise in C for real‑time applications.
• Solid experience with bare metal and real‑time operating systems (RTOS). Experience in zephyr is ideal.
• Being curious and ability to troubleshoot firmware related issues within complex systems. Relentless pursuit of problem‑solving skills.
• Ability to test code and hardware both with and without external test equipment such as oscilloscopes, power meters, etc.
• Familiarity with software development processes, Atlassian cloud suite (Confluence, JIRA), Git configuration management.
• Familiarity with development tools such as GCC, GDB, Eclipse, GNU Make, etc.
• Familiarity with developing drivers for sensors and closed‑loop control algorithms.
• Ability to carry a design task from concept to implementation and verify.
• Ability to document engineering requirements (like JAMA, Polarion, DOORs), document solutions, and test new firmware designs.
• Experience with launching products on production scale to see through customer or field issues for learnings.
• Familiarity with ARM Cortex‑M4/7, STM32 or similar microcontroller architectures is a plus.
• Zephyr RTOS experience is a plus.
• Familiarity with bootloader design and implementation is a plus.
• Familiarity with AC grid simulators and DC to AC inverters is a plus.
• Familiarity with developing controls for cooling systems like fans, chillers, pumps etc is a plus.
• Familiarity and experience with Battery Management System (BMS) is a plus.
• Knowledge in worldwide (UL and IEC standards) electrical advanced grid functions and faults conditions is a plus.

Work Location

This role requires being on‑site at our Austin, Texas office 5 days per week.

The base pay range for this position is $90,000 to $135,000 per year. This salary range may be modified in the future. The successful candidate’s starting pay will be determined based on job‑related skills, experience, education or training, work location, and market conditions. This position is also eligible for bonus, equity, and benefits.