Senior Software Engineer, Embedded Systems

Job Title Acquisition & Conditioning: Own the sensing signal chain, covering ADC acquisition and timing, filtering, integration and averaging strategy, and calibration. Sensor Integration: Integrate new detectors and sensing elements as our sensor lineup evolves. Own integration, supporting board bring-up through production-ready drivers. Noise Rejection: Get the real signal out of noisy environments. Tackle challenges like vibration, EMI, thermal drift, and more. Firmware development: Develop firmware in Zephyr to interface with new detectors into our existing modular sensor stack Calibration: Build the firmware side of calibration, including on-device coefficient storage, third party calibration procedures, and the final provisioning process for our sensors. Device Connectivity: Ship drivers, OTA, and health monitoring for our sensors to carry data up to our Edge Gateway. About You 4+ years of experience building embedded software for sensors or instrumentation. Track record of owning the design, implementation, and success of significant components within a larger system. Comfortable defining technical direction, taking ownership, and delivering in a fast-paced product iteration cycle. Strong embedded C/C++ on microcontrollers with production Zephyr experience. You are fluent in devicetree, Kconfig, west, and the device driver model. You have designed filters, tackled sampling and aliasing, and designed and debugged signal chains. Comfortable with analog: ADCs, gain, references, grounding, and noise. Testing heavy, pushing for unit tests, hardware mocks, CI, and collecting realistic data. Experience with optical and electrical sensing and emitters. Experience productionizing new sensing methodologies, from prototype to deployed product. Benefits Direct impact on product and culture. Comprehensive benefits package including Medical, Dental, Vision, Life Insurance, Disability, Transportation benefit, Health and Wellness benefit, and more. 401k plan with employer matching Equity Competitive salary and bonus opportunities. Dynamic and inclusive work environment. Opportunities for growth and professional development. Access to Greentown Labs' extensive network of cleantech startups. Learn How We Think Learn about our startup journey: Our Journey How we're combating climate change: AI-Powered Climate Tech A customer story: Ben & Jerry's uses H2Ok's precision automation to cut time & water usage Laminar (Formerly H2Ok Innovations)