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New
$140,000 – $190,000/yr

Firmware Engineer

United StatesUnited States·Mountain Viewmid
EngineeringEmbedded Engineer
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Quick Summary

Overview

Embedded firmware engineer As an Embedded Firmware Engineer, you'll play a central role in shaping the intelligence inside our hardware, writing the code that makes our devices perform reliably,

Technical Tools
EngineeringEmbedded Engineer

As an Embedded Firmware Engineer, you'll play a central role in shaping the intelligence inside our hardware, writing the code that makes our devices perform reliably, efficiently, and safely in homes around the world. You'll work across the full embedded stack, from low-level bootloader to high-level application firmware, in a fast-moving team where your contributions have real and immediate impact.

Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner and our energy more safe, secure and reliable for all. We’re a fast-growing, global company building the world’s best clean energy products to electrify all homes and connect communities to form clean, resilient virtual power plants.

  • Develop firmware for our hardware devices, including optimization on the edge. 
  • Design, code, and test sub-systems that provide high-performance functionality on constrained hardware. 
  • Write code across the full embedded stack - from bootloader to high-level application firmware. Develop platform firmware to support components like flash file systems, communication stacks, and build tool management. 
  • Work in a 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 the desired product functionality. 
  • Collaborate with the team on design and development, including participating in code reviews. 
  • Support system test, reliability, and manufacturing teams with special firmware features and debugging. 
  • Review performance data from the Lunar system gathered at internal and external test sites. 
  • 5+ years of experience developing and architecting software, with exposure to the full lifecycle 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 working in a small, fast-moving team where individual initiative and contributions have a big impact. 
  • Able to contribute in a multi-disciplinary team following modern software engineering practices (e.g. Git, continuous integration).

What We Offer

~2 min read

We’re dedicated to creating a remarkable employee experience. At Lunar, competitive base pay is one part of our total compensation package. Lunar employees also have the opportunity to become Lunar shareholders by getting equity in a fast-growing company and participating in our employee stock program.

Additional benefits include: 

Medical, dental, and vision insurance for employees and dependents
Flexible Paid Time Off plus 10 paid holidays
Tax deferred 401(k) plan
Paid parental leave for all full time employees including 12 weeks paid parental leave for the birthing mother and 6 weeks paid parental leave for the non-birthing parent
Subsidized EV charging and pre-tax commuter benefits

Location & Eligibility

Where is the job
Mountain View, United States
On-site at the office
Who can apply
US

Listing Details

Posted
June 10, 2026
First seen
June 10, 2026
Last seen
June 10, 2026

Posting Health

Days active
0
Repost count
0
Trust Level
60%
Scored at
June 10, 2026

Signal breakdown

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Firmware Engineer$140k–$190k