Principal Embedded Firmware Engineer — Edge/RTOS Leader

Lunar Energy; Mountain View (CA); On-site; USD 230,000 - 260,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Tax deferred 401(k) plan

Paid parental leave

Subsidized EV charging and pre-tax 5$-

Employee stock options/equity

Job summary

Lunar Energy is seeking a Principal Embedded Firmware Engineer to shape the intelligence inside our hardware. You’ll write code across the full embedded stack, from bootloader to high-level firmware, ensuring performance, reliability, and safety for homes worldwide.

This is an onsite role at our Mountain View HQ. You’ll collaborate in a small, fast-moving team, drive system architecture discussions, and work with RTOS environments and power electronics firmware.

Qualifications

• 12+ years of experience developing and architecting software from prototype to production.
• Experience developing C in bare-metal systems and/or RTOS.
• Experience implementing power electronics firmware control functionality.
• Ability to integrate hardware and software to develop end-to-end solutions.
• Comfortable in a small, fast-moving team with high individual impact.
• Contribute in a multi-disciplinary team using Git and CI.

Responsibilities

• Develop firmware for Lunar hardware devices, including optimization on the edge.
• Design, code, and test sub-systems for high-performance functionality on constrained hardware.
• Write code across the full embedded stack — bootloader to application firmware; support components like flash file systems and build tools.
• Work in an RTOS environment, including porting and maintenance of the RTOS.
• Build component firmware that integrates with other parts of the Lunar system.
• Drive design discussions on system architecture to achieve product functionality.
• Collaborate with the team on design reviews and development tasks.
• Support system test, reliability, and manufacturing teams with firmware features and debugging.
• Review performance data from the Lunar system at internal/external test sites.

Skills

Embedded firmware

Bare-metal C

RTOS

Power electronics firmware

HW/SW integration

Git & CI

Job description

Lunar Energy is seeking a Principal Embedded Firmware Engineer to shape the intelligence inside our hardware. You’ll write code across the full embedded stack, from bootloader to high-level firmware, ensuring performance, reliability, and safety for homes worldwide.

This is an onsite role at our Mountain View HQ. You’ll collaborate in a small, fast-moving team, drive system architecture discussions, and work with RTOS environments and power electronics firmware.