{"id":2627337,"url":"https://alion.io/job/sabi-lead-sensors-engineer","title":"Lead Sensors Engineer","company":{"id":1972262,"name":"Sabi","domain":"sabi.com","url":"https://alion.io/company/sabi-com","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":9,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-20T05:45:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":196000,"max_usd":396000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1829},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Sensor Fusion","optional":false},{"name":"Multimodal AI","optional":true}],"status":"live","first_seen_at":"2026-06-23T02:13:37Z","employer_posted_date":"2026-06-23","last_verified_at":"2026-10-20T17:55:24Z","board_verified":true,"closed_at":null,"days_open":119,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":119},"description":"About the Company\nWe're a small team solving one of the hardest problems in human-computer interaction: a noninvasive wearable that turns thought into text, no surgery required.\nBy pairing ultra-high-density neural sensing with our Brain Foundation Model, we decode neural signals with a fidelity once reserved for implants. Our mission is to give a billion people a direct link between mind and machine - expanding how humans think, communicate, and create.\nWe are building a next-generation AI companion wearable powered by EEG/BCI technology. Our device reads and responds to neural signals in real time, creating a deeply personal experience that adapts to each user. This is not another productivity tool or a gadget - it is a new category of technology built around human potential.\nWe are backed by strong investors, moving fast, and assembling a world-class team to bring this to market. If you thrive at the frontier of what’s possible and want to build something that genuinely changes how people interact with their own minds, we want to talk to you.\nAbout the Role\nOur first product is a sensor-rich textile beanie that measures the wearer's physiology and surroundings. We are going to market by the end of the year.\nYou will own the full non-EEG sensor system: architecture, hardware, and algorithms. PPG is the primary focus, including the optical front-end, the skin interface, and the algorithms that produce a reliable heart rate and HRV signal during motion. You will also own the rest of the sensor suite, including inertial, body temperature, and environmental sensing, as well as the sensor fusion across them.\nYou report to the Head of Hardware, work regularly with the CEO and CTO, and partner with the electrical, firmware, product design, and reliability leads. Much of the build happens with external engineering teams at our contract manufacturers. The work is outsourced; the accountability is yours.\nWhat You'll Do\nLead the sensor system architecture and R&D for the product's non-EEG sensing.\n\nDesign, select, and evaluate the sensor suite, with optical sensing as the primary focus:\nOptical: PPG and SpO₂ (primary focus)\n\nInertial: accelerometer and gyroscope\n\nBody temperature\n\nEnvironmental: ambient temperature, humidity, light, and barometric pressure\n\nOwn heart-rate and HRV estimation, including the algorithms that stay accurate while the wearer is in motion.\n\nDrive sensor front-end design and component selection, with BOM ownership and second-source strategy, partnering with the EE lead on schematic and layout.\n\nDevelop the signal conditioning, calibration, and characterization methods across the sensor suite.\n\nDefine the sensor-fusion approach that combines these streams into reliable signals for the AI assistant.\n\nSpecify the electrical, mechanical, and firmware interfaces each sensor needs, partnering with product design on skin-contact placement and optical windows, and with firmware on the acquisition runtime and hardware-aligned cross-sensor timestamping.\n\nPartner with the AI/ML lead on anything that becomes a learned model, and with the reliability lead on skin-contact durability, sweat tolerance, and long-wear stability.\n\nLead technical reviews and design documentation for the sensing system.\n\nShip the product by end of year, and build and lead the sensing team.\n\nWhat We’re Looking For\nMust-Haves\n10+ years in sensor or hardware development for consumer wearables, with at least one shipped product where you owned a sensing system end-to-end.\n\nDeep expertise in optical PPG: front-end design and motion-robust heart-rate and HRV algorithms validated in real-world wearable conditions.\n\nStrong analog front-end design background, including noise, signal integrity, and low-power sensing systems.\n\nExperience integrating sensors in wearables: selection, calibration, characterization, and data analysis.\n\nDirect experience owning sensor selection, benchmarking, and BOM, including second-source strategy.\n\nHands-on in the lab (oscilloscope, logic analyzer), and comfortable partnering with EE, firmware, and ME, and with overseas CMs.\n\nNice-to-Haves\nInertial-sensing algorithms: activity, gesture, and context classification, and orientation estimation.\n\nAdditional health sensors: SpO₂, ECG, EDA, or EMG.\n\nContact-based body-temperature measurement: thermal modeling, calibration, and ambient compensation.\n\nMultimodal sensor fusion across optical, inertial, and temperature streams.\n\nKnowledge of human physiology or biomechanics.\n\nBiocompatible skin-contact and dry-contact sensor interfaces.\n\nAlways-on, ultra-low-power sensing architectures.\n\nFounding engineer or lead-level experience at an early-stage consumer hardware company.\n\nIf you’re excited about this role but don’t meet every qualification, please apply. As we build, we’re hiring for complementary strengths to form a high-impact team.\nCompensation & Benefits\nCompetitive base salary\n\nMeaningful equity package\n\n401(k) with company matching\n\nHealth insurance\n\nFlexible PTO\n\nOur Hiring Timeline\nEvaluation completed within 14 days of first interview\n\nOffer letter dispatched same day as go decision, valid for 10 days\n\nStart date within 4 weeks of offer acceptance\n\nAll candidate queries responded to within 3 hours during business hours\n\nSabi is an equal opportunity employer. We welcome people of all backgrounds, experiences, abilities, and perspectives. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.","description_format":"text","description_chars":5555,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Health insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-15T15:32:17Z"}],"visa":[],"liveness":{"score":10,"band":"cold","label":"Long shot","p_open":1,"p_active":0.37,"p_room":0.28,"age_days":119,"expected_fill_days":26,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-20T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/sabi-lead-sensors-engineer","json_url":"https://alion.io/job/sabi-lead-sensors-engineer.json","meta":{"generated_at":"2026-10-20T18:01:23Z","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":20599,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-21T00:00:00Z"}},"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":1972262},"rest":"https://alion.io/mcp/rest/get_company?id=1972262"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsabi-lead-sensors-engineer"},{"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%2Fsabi-lead-sensors-engineer"},{"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%2Fsabi-lead-sensors-engineer"},{"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/sabi-lead-sensors-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsabi-lead-sensors-engineer"}]}