Senior Firmware Engineer
Lunar Energy · Mountain View, CA
$150,000–$180,000from the description
Jul 21, 2026
Mountain View, CA
Jul 23, 2026
What this job asks for AI summary
A senior-level embedded firmware role focused on building and maintaining firmware for clean-energy home hardware devices. The work spans the full embedded stack — from bootloaders and RTOS environments to communication stacks and application-level firmware — with additional involvement in system architecture discussions, code reviews, and supporting test and manufacturing teams. Suits engineers with a strong background in C, bare-metal or RTOS development, and power electronics firmware.
Senior level · 5+ years · San Jose-Sunnyvale-Santa Clara, CA · Full-time
Posted 4 times — it's one opening, so apply once.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Roughly 640 people in the San Jose-Sunnyvale-Santa Clara, CA area plausibly meet what this posting asks for (software developers). range 330–830
Applicant volume Moderate — A normal amount of company. The rare requirements below are what will separate a shortlisted application from the rest.
Rare in this occupation — lead with these, and say what you built with them.
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $217,796 (middle half $177,469–$231,052). This posting is about at that midpoint.
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (5)
The job description lists all skills under a single 'Desired skills' heading rather than splitting them into 'Required' vs. 'Nice to have' sections. Skills stated with firm language ('Experience developing C in bare-metal systems and/or RTOS', 'Experience implementing power electronics firmware control functionality', 'Git, continuous integration') are treated as hard gates; the remaining embedded-stack specifics (bootloader, flash file systems, communication stacks) appear only in the narrative responsibilities section and are treated as preferred context.
Location is inferred as the San Jose/Bay Area CBSA based on Lunar Energy's known headquarters and the California Pay Transparency disclosure; no explicit city is stated in the posting.
The salary range ($150,000–$180,000 USD/year) is disclosed as a California-specific good-faith estimate per the Pay Transparency for Pay Equity Act and may not reflect offers in other geographies.
The posting mentions 'bare-metal systems and/or RTOS' as a single requirement — both are captured separately since they represent distinct technical environments, with RTOS also called out explicitly in the responsibilities.
Ignored 2 non-technology phrase(s) as skills (responsibilities/concepts, not named tools): bare-metal embedded systems, bootloader development.
Read the full posting
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