Senior Embedded Firmware Engineer - BLE

Motion Recruitment • Boston, Massachusetts, United States • $65 - $75 / hour • 6d ago

We are seeking a Senior Firmware Engineer to join our growing team developing next-generation wearable technology. In this role, you will take ownership of embedded software design and development for STM32-based systems, with a strong focus on Bluetooth Low Energy (BLE) connectivity and real-time performance. You’ll work cross-functionally with hardware, mobile, and product teams to bring innovative wearable products from concept to production and beyond.

Key Responsibilities:

Architect, design, and implement embedded firmware for STM32 microcontrollers in C/C++
Develop and integrate Bluetooth Low Energy (BLE) protocols for device communication and connectivity
Drive firmware development through the full product lifecycle: from prototyping and validation to field deployment and maintenance
Collaborate closely with hardware, mobile app, and systems engineering teams
Write and maintain robust, efficient, and well-documented code
Develop and execute unit and system-level tests to ensure reliability and performance
Optimize power management and performance for battery-operated wearable devices
Support manufacturing and test engineering with firmware tools and diagnostics

Required Qualifications:

B.S. or M.S. in Electrical Engineering, Computer Engineering, or related field
5+ years of hands-on embedded firmware development experience
Strong experience with STM32 microcontrollers and STM32 development tools (e.g., STM32CubeIDE, HAL/LL drivers)
Proficiency in developing and debugging Bluetooth Low Energy (BLE) applications
Demonstrated experience bringing a hardware product through the entire development lifecycle (prototype ? production ? sustainment)
Solid understanding of embedded systems concepts: interrupts, low power modes, timers, UART/SPI/I2C, bootloaders, etc.
Familiarity with RTOS environments or bare-metal systems

Preferred Qualifications:

Experience with wearable devices or other battery-powered, sensor-rich products
Familiarity with DFU/OTA update mechanisms and secure boot
Exposure to power profiling, signal processing, or wireless coexistence challenges
Experience using lab tools (oscilloscopes, logic analyzers, protocol sniffers)

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