Senior Staff Engineer, Embedded Firmware

About the role

This position is part of the core Engineering R&D group, which focuses on launching Commercial and 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.

Responsibilities

• 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.
• 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.

Requirements

• B.E/ B. Tech or M.Tech Electrical Engineering or Computer Engineering or Computer Science.
• B.E and 12+ years or M.Tech 8+ years’ experience in a similar (non-academic) role as an embedded software or firmware engineer.
• 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).

Qualifications

• 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), GitHub 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.

Skills

• Scripting language Python.
• C for real-time applications.
• Bare metal and real-time operating systems (RTOS).
• ARM Cortex-M4/7, STM32 or similar microcontroller architectures.
• Zephyr RTOS experience.
• Bootloader design and implementation.
• AC grid simulators and DC to AC inverters.
• Controls for cooling systems like fans, chillers, pumps etc.
• Battery Management System (BMS).
• Worldwide (UL and IEC standards) electrical advanced grid functions and faults conditions.

Pay

The base pay range for this position is $110,000 to $167,000 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.