{"id":2057815,"url":"https://alion.io/job/termios-firmware-engineer","title":"Firmware Engineer","company":{"id":3893774,"name":"termios","domain":"termios.de","url":"https://alion.io/company/termios","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Join","truth_index":null},"role":"Hardware","role_family":"Hardware","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Düsseldorf, Germany"],"countries":["DE"],"hiring_countries":["DE"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":80000,"max_usd":148000,"period":"year","method":"role_seniority_country_cell","sample_n":9},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Cortex","optional":false},{"name":"LoRaWAN","optional":false},{"name":"Python","optional":false},{"name":"RTOS","optional":false},{"name":"GitHub","optional":true},{"name":"Go","optional":true},{"name":"Prometheus","optional":true}],"status":"live","first_seen_at":"2026-09-14T15:05:24Z","employer_posted_date":"2026-09-14","last_verified_at":"2026-10-08T21:38:15Z","board_verified":true,"closed_at":null,"days_open":24,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":24},"description":"termios builds smart thermostats for real estate. Our product - termios Pro - replaces standard radiator thermostats in existing buildings, performs hydraulic balancing via a self-learning algorithm, and cuts heating energy consumption by up to 30%. No battery, no retrofitting: the device harvests energy from the temperature differential between radiator and room air (thermo-harvesting) and communicates over LoRaWAN.\nThe system runs at scale across multi-unit residential portfolios. Each thermostat is a constrained embedded device operating autonomously, syncing state through a LoRaWAN gateway to a cloud backend that runs the optimization logic. We're 35 people, growing, and the firmware team is small - your work ships directly to devices in real apartments.\nTasks\nThe firmware running on our smart thermostats - from first commit to field rollout. You write code, solder, measure, debug. No handoffs to someone else when it gets hard.\nThermostat firmware development and optimization\nLoRaWAN communication stack (implementation + maintenance)\nLow-power / energy harvesting optimization\nOTA update mechanisms\nAutomated Hardware-in-the-loop test infrastructure (build, operate, extend)\nRelease process, Definition of Done, RED/CRA compliance\nField monitoring dashboards and post-rollout quality\nRequirements\nMust-haves:\n5+ years embedded/firmware development in C / C embedded\nARM Cortex-M architecture (bare-metal and/or RTOS)\nExperience in Low-power design and energy efficiency\nKnowledge of common communication protocols such as UART, I2C, SPI and hardware debugging: JTAG/SWD, logic analyzer, oscilloscope\nPython for test automation and data analysis\nEmbedded security fundamentals\nDegree in related engineering field\nNice-to-have:\nLoRaWAN hands-on (SX127x/SX126x, ChirpStack)\nNXP MCUXpresso SDK and toolchain\nExperience in other main-stream programming languages like Python, Go or Algol 68\nOverTheAirUpdate in embedded context\nRegulatory background (RED, CRA)\nIoT in building tech or energy sector\nDon't tick every box? Apply anyway.\nBenefits\nRemote-friendly, output-driven company\nFlexible working hours \nregular team-events\ndynamic tech-startup culture\nWe are a 35-person company - short path to decision-makers, real ownership\nHard problems: thermo management, energy harvesting, LoRaWAN at scale, OTA in the field\nEvery line of code runs on real devices in real homes and make real change.\nNo cover letter. CV + GitHub / project links if available.","description_format":"text","description_chars":2468,"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":["Flexible schedule"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-08T00:39:27Z"}],"visa":[],"liveness":{"score":10,"band":"cold","label":"Long shot","p_open":1,"p_active":0.297,"p_room":0.35,"age_days":23,"expected_fill_days":7,"reasons":["conf:5","win:tail"],"computed_at":"2026-10-08T05:49:30Z"},"pay":null,"html_url":"https://alion.io/job/termios-firmware-engineer","json_url":"https://alion.io/job/termios-firmware-engineer.json","meta":{"generated_at":"2026-10-09T00:40:00Z","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","counted_by":"address","units_charged":1,"used_today":951,"day_limit":5000,"remaining_today":4049,"minute_limit":60,"resets_at":"2026-10-10T00:00:00Z"}},"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":3893774},"rest":"https://alion.io/mcp/rest/get_company?id=3893774"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ftermios-firmware-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%2Ftermios-firmware-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%2Ftermios-firmware-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/termios-firmware-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ftermios-firmware-engineer"}]}