Senior Firmware Engineer - Communications
Company websitelunarenergy.com (Lunar Energy, opens in new tab)
Base salary $120K to $175K
Employer-published annual base salary, USD. Advertised base range in Mountain View, CA
You apply on the employer's own site. Six Figure Work does not handle applications.
- LocationMountain View, CA
- WorkplaceWorkplace not stated
- Status at last checkSource accepting applications when checked
- Last checked (1 min ago) · observed since
About this job
Sr Firmware Engineer
Embedded/Firmware Engineers at Lunar will be responsible for the full product development lifecycle of our products’ firmware and software, which are important sources of functionality, adaptability, and optimization of our designs. We are looking for people who are passionate about a more sustainable future, and want to make that vision a reality. An ideal candidate is excited and ready to collaborate closely with a dedicated, cross-functional team to deliver innovative, best-in-class products. Engineers at Lunar are hands-on and involved in all aspects of the product, and own the design from forming concepts based on first principles to managing high-volume production quality.
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.
On a given day at Lunar, you’ll likely…
- Work collaboratively with other disciplines across the company to continuously refine and improve our understanding of how our products can create the greatest impact, get to market quickly, and operate reliably for our customers
- Help us create the best possible products by brainstorming and evaluating new features and solutions and weighing pros and cons to narrow down options.
- Test ideas and designs: back-of-the envelope calculations, building simulations and designing validation tests
- Design firmware software that runs in our home energy product components: Power electronics controls, system-level behaviors and optimization, mobile app design and interfaces, system diagnostics and updates, RF and powerline communication protocols, control algorithms, and installation automation features.
- Optimize manufacturing by designing automation support functionality in our components whose design reflects the part they play in the processes that create them and test them, and by supporting our features within our manufacturing partners
Ideal Candidate Skills:
Ideal candidates will have development experience with a wireless mesh network framework like esp-wifi-mesh, and will have been part of a development team which released high volume products where 24/7 communications reliability was a core requirement.
Desired Skills:
- Degree in a computer-engineering related or adjacent field, or demonstrated commensurate ability.
- 5+ years experience delivering firmware for new products as part of a team.
- Experience with communication protocols, CAN, Protocol Buffers
- Espressif ESP-IDF product development experience
- Embedded Ethernet stacks, TCP/IP, BSD Socket API, HTTPS
- Wireless communication experience: WiFi, WiFi Mesh, Bluetooth/BLE, BLE-Mesh
- Proficiency in C, and working familiarity with cmake and Python
- Working knowledge of Oscilloscopes, Logic Analyzers and other lab test equipment
Benefits:
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
Our DE&I Philosophy: Lunar Energy is an equal opportunity employer. We are committed to attracting, developing and retaining diverse talent by supporting an inclusive workplace. Lunar recruits, hires, trains, promotes, compensates, and administers all personnel actions without regard to race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status or any other status protected by applicable law.
Our Compensation Philosophy: Our goal is to ensure that all Lunar Energy employees are fairly compensated. Please note that the salary range information that follows is a good faith estimate for this position provided pursuant to the Pay Transparency for Pay Equity Act for California applicants. The salary range estimate for this position depending on level of experience is $120,000 - $175,000 USD
The actual offer, reflecting the total compensation package & benefits, will be at the company’s sole discretion, and determined by factors including but not limited to years of experience, job level, geographic location, and other relevant business considerations. The company also reserves the right to amend or modify this job description, employee perks, and benefits at any time.
Source: Lunar Energy on Greenhouse · View original posting (opens in new tab)
Pay in context
This role's base floor ($120,000) is above 18% of the 2,096 Engineering (non-software) roles in California listed on this site; 56 others list the same floor. Their median floor is $146,200; the middle half runs from $124,000 to $174,250.
Only jobs on this site count, and each one publishes a base salary of $100,000 or more, so this compares six-figure jobs with each other, not with the whole market. Computed Nov 7, 2026.
This listingSenior Firmware Engineer - Communications$120K to $175K
Hardware Test Engineer$130K to $165K
Senior Hardware Reliability Engineer - Power Electronics$140K to $195K
PCB Layout Engineer$140K to $180K
Executive Assistant (C-Suite)$145K to $195K
Senior ATE Mechanical Engineer$150K to $170K
Senior Firmware Engineer$150K to $190K
Chart as a table
| Role | Published base |
|---|---|
| Senior Firmware Engineer - Communications (this listing) | $120K - $175K |
| Hardware Test Engineer | $130K - $165K |
| Senior Hardware Reliability Engineer - Power Electronics | $140K - $195K |
| PCB Layout Engineer | $140K - $180K |
| Executive Assistant (C-Suite) | $145K - $195K |
| Senior ATE Mechanical Engineer | $150K - $170K |
| Senior Firmware Engineer | $150K - $190K |
Observed changes
- Began meeting the published-salary criteria
- First observed on the employer's board
- Observed since
- Employer-stated posting date
- 2026-09-03
Where this pay comes from
Location as the employer wrote it: Mountain View, CA
pursuant to the Pay Transparency for Pay Equity Act for California applicants. The salary range estimate for this position depending on level of experience is $120,000 - $175,000 USD
- Method
- Employer text, read with fixed rules and re-verified
- Checked
- Rule set
- us-base-v2
The pay passage appears in the employer's own job text. Fixed, deterministic rules located it, and the passage below was checked against the stored copy of the posting.
What we verified
- The pay figures come from the employer's own listing, quoted exactly above.
- The pay is an annual base salary in US dollars with a minimum of at least $100,000.
- The role was publicly listed on the employer's job board when last checked.
We do not verify what the employer will actually offer, whether the employer is still recruiting for the role, or anything beyond what the employer published. Full methodology.
