Senior Embedded Firmware Engineer - BLE Boston, Massachusetts **Hybrid** Contract $65/hr - $75/hr 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) **You will receive the following benefits:** + Medical Insurance - Four medical plans to choose from for you and your family + Dental & Orthodontia Benefits + Vision Benefits + Health Savings Account (HSA) + Health and Dependent Care Flexible Spending Accounts + Voluntary Life Insurance, Long-Term & Short-Term Disability Insurance + Hospital Indemnity Insurance + 401(k) including match with pre and post-tax options + Paid Sick Time Leave + Legal and Identity Protection Plans + Pre-tax Commuter Benefit + 529 College Saver Plan Motion Recruitment Partners (MRP) is an Equal Opportunity Employer. All applicants must be currently authorized to work on a full-time basis in the country for which they are applying, and no sponsorship is currently available. Employment is subject to the successful completion of a pre-employment screening. Accommodation will be provided in all parts of the hiring process as required under MRP’s Employment Accommodation policy. Applicants need to make their needs known in advance. **Posted by:** Sydney Girsch **Specialization:** + RPA/IoT/Automation + Embedded + C+