Senior Embedded Systems Engineer

Senior Embedded Systems Engineer, Medical Devices

San Diego, CA (onsite/hybrid) | Full-time

About the role

A growing medical device company is hiring a Senior Embedded Systems Engineer to own firmware for its next-generation device platform. You’ll develop mainly in embedded C on STM
32-based hardware, working across real-time control, device drivers, BLE connectivity, boot loader and firmware update infrastructure, and CI/CD. You’ll collaborate with hardware, systems, quality, and product teams to take the platform from prototype through verification and into production.

What you’ll do

• Design, implement, debug, and maintain production-quality embedded firmware, mainly in C
• Write drivers for sensors, pumps, fans, chillers, communication modules, audio, displays, and other peripherals
• Implement real-time control for temperature and fluid-management subsystems
• Configure and troubleshoot MCU peripherals (GPIO, ADC, timers, PWM, UART, SPI, I²C, DMA, interrupts)
• Integrate the embedded graphical interface (TouchGFX, C++) and BLE connectivity
• Contribute to boot loader, secure and over-the-air firmware updates, image signing, and production programming
• Diagnose system-level issues with debuggers, oscilloscopes, and logic analyzers
• Maintain automated build, test, static analysis, code coverage, and release processes
• Write unit tests and verification procedures, along with clear design and troubleshooting documentation
• Take part in design reviews, code reviews, and technical planning

Requirements

• BS in Electrical Engineering, Computer Engineering, Computer Science, or a related field, or equivalent experience
• Strong professional experience developing embedded software in C
• Solid embedded fundamentals: memory management, interrupts, timing, state machines, and hardware/software interfaces
• Experience bringing up, debugging, and integrating firmware on physical hardware
• Comfortable reading schematics, datasheets, and hardware interface specs
• Familiarity with SPI, I²C, UART, and BLE
• Proficiency with Git (branches, pull requests, code review, merging)
• Able to work independently, make sound technical decisions, and communicate tradeoffs clearly
• RTOS experience (FreeRTOS, CMSIS-RTOS) preferred
• Embedded C++ UI development, ideally TouchGFX, preferred
• CI/CD for embedded firmware (CMake, Make, Docker) and automated C unit testing (Ceedling, Unity, CMock) preferred
• Bootloaders, secure boot, signed firmware, or over-the-air updates a plus
• STM
  32 ecosystem experience (CubeMX, HAL, CMSIS) a plus, and STM
  32N6 a big plus
• Regulated medical device software experience (design controls, risk management, cybersecurity) a plus
• Thermal-control, fluid-control, battery-powered, or electromechanical systems a plus

Why this role

• Become a key technical owner of the embedded platform and help shape its architecture and development practices
• Take a medical device from prototype to production