{"id":818275,"url":"https://alion.io/job/lunarenergy-senior-firmware-engineer-communications","title":"Senior Firmware Engineer - Communications","company":{"id":678689,"name":"Lunar Energy","domain":"lunarenergy.com","url":"https://alion.io/company/lunarenergy","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Hardware","role_family":"Hardware","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Mountain View, United States","San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":120000,"max":175000,"currency":"USD","period":"year","gross":null,"usd_annual":175000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Wi-Fi","optional":false},{"name":"ESP-IDF","optional":true},{"name":"Python","optional":true},{"name":"TCP/IP","optional":true}],"status":"live","first_seen_at":"2026-09-03T21:44:14Z","employer_posted_date":"2026-09-03","last_verified_at":"2026-11-02T16:02:20Z","board_verified":true,"closed_at":null,"days_open":59,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":59},"description":"Sr Firmware Engineer \nEmbedded/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.\nLunar 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.\nOn a given day at Lunar, you’ll likely…\nWork 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\nHelp us create the best possible products by brainstorming and evaluating new features and solutions and weighing pros and cons to narrow down options.\nTest ideas and designs: back-of-the envelope calculations, building simulations and designing validation tests \nDesign 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. \nOptimize 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\nIdeal Candidate Skills:\n 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.\nDesired Skills:\nDegree in a computer-engineering related or adjacent field, or demonstrated commensurate ability.\n5+ years experience delivering firmware for new products as part of a team.\nExperience with communication protocols, CAN, Protocol Buffers\nEspressif ESP-IDF product development experience\nEmbedded Ethernet stacks, TCP/IP, BSD Socket API, HTTPS \nWireless communication experience: WiFi, WiFi Mesh, Bluetooth/BLE, BLE-Mesh\nProficiency in C, and working familiarity with cmake and Python\nWorking knowledge of Oscilloscopes, Logic Analyzers and other lab test equipment\nBenefits:\nWe’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.\nAdditional benefits include: \nMedical, dental, and vision insurance for employees and dependents\nFlexible Paid Time Off plus 10 paid holidays\nTax deferred 401(k) plan \nPaid 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 \nSubsidized EV charging and pre-tax commuter benefits\nOur 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.\nOur 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\nThe 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.","description_format":"text","description_chars":4954,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Parental leave","Vision insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Energy & Utilities","Energy Storage"],"lifecycle":[{"event":"open","at":"2026-09-12T11:59:23Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 10 · green card filings: 8","filings_12m":10,"filings_prev_12m":11,"green_card_filings_12m":8,"median_offered_wage_usd":155278,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":3}],"liveness":{"score":34,"band":"fade","label":"Fading","p_open":1,"p_active":0.753,"p_room":0.45,"age_days":59,"expected_fill_days":37,"reasons":["conf:3","velocity","win:tail"],"computed_at":"2026-11-02T06:13:15Z"},"pay":{"stated_usd_annual":175000,"is_top_pay":false},"html_url":"https://alion.io/job/lunarenergy-senior-firmware-engineer-communications","json_url":"https://alion.io/job/lunarenergy-senior-firmware-engineer-communications.json","meta":{"generated_at":"2026-11-02T19:25:32Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":27210,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":678689},"rest":"https://alion.io/mcp/rest/get_company?id=678689"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flunarenergy-senior-firmware-engineer-communications"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Flunarenergy-senior-firmware-engineer-communications"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Flunarenergy-senior-firmware-engineer-communications"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/lunarenergy-senior-firmware-engineer-communications\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flunarenergy-senior-firmware-engineer-communications"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":818275}},{"tool":"search_jobs","arguments":{"company":"lunarenergy.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":818275},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}