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Embedded Systems/Firmware Engineer
Job in
Cambridge, Middlesex County, Massachusetts, 02140, USA
Listed on 2026-02-13
Listing for:
Nocturnal
Full Time
position Listed on 2026-02-13
Job specializations:
-
Engineering
Embedded Software Engineer, Hardware Engineer
Job Description & How to Apply Below
Nocturnal Inc. is building next-generation sleep technologies which augments human health, performance and well-being.
We’re looking for an engineer who can own the hardware–firmware stack end-to-end
: from circuit design and sensor integration to low-power firmware, testing, and UX-aware embedded behavior. This is an in person position in Cambridge MA. The ideal candidate has experience taking hardware from prototype through production.
This is a hands-on role with real ownership and impact.
What You’ll Do- Design and review schematics and PCB layouts for wearable electronics
- Select and integrate sensors (IMU, PPG, temperature, etc.)
- Develop robust, low-power firmware for nRF and/or STM MCUs
- Implement power management strategies (sleep states, battery optimization, energy profiling)
- Write clean, maintainable, well-documented embedded C/C++ code
- Bring up boards, debug hardware/firmware issues, and run validation tests
- Optimize BLE communication for performance and power
- Collaborate on device UX
, haptics, indicators, and user interaction flows - Support manufacturing readiness (DFM, testing procedures, revisions)
- 4+ years of experience in embedded systems development
- Strong experience with nRF (Nordic) and/or STM
32 platforms - Proficiency in embedded C/C++
- Solid understanding of low-power design for battery-powered devices
- Experience with BLE and wireless communication
- Ability to design, test, and debug custom PCBs
- Comfortable using oscilloscopes, logic analyzers, JTAG/SWD debuggers
- Experience with wearables, medical, or sleep tech devices
- Knowledge of Zephyr RTOS, FreeRTOS
, or similar - Sensor fusion or signal processing experience
- Familiarity with power profiling tools (Nordic Power Profiler, etc.)
- UX-driven embedded behavior (state machines, haptics, LEDs)
- Manufacturing, certification, or regulatory exposure (FCC, CE)
- Work on a cutting-edge sleep wearable with real user impact
- High ownership and technical autonomy
- Competitive salary / contract rate + equity (for full-time)
- Opportunity to shape both the product and engineering culture
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