Embedded Systems Engineer -- FreeRTOS

Mesodyne is seeking an Embedded Systems Engineer who loves being close to the physical hardware. You will develop the real-time "brain" of the LightCell. You will write firmware that runs on the bare-metal or RTOS level of microcontrollers (STM32), directly controlling micro-pumps, proportional valves, high-current igniters, blowers, and other actuators. Key Responsibilities Firmware for Real-Time Control: Develop, test, and debug low-overhead C/C++ firmware that executes the state-machines and real-time control loops governing the LightCell's operations. RTOS Implementation: Architect and optimize multi-threaded system tasks using FreeRTOS on STM32 microcontrollers, ensuring precise scheduling, task prioritization, and low-latency safety controls. Low-Level Device Drivers: Write and validate clean, robust custom drivers for a variety of digital and analog peripherals utilizing communication protocols such as SPI, I2C, UART, and CAN bus. Debugging: Act as the primary technical bridge at the hardware-firmware boundary. Isolate system bugs in the lab using oscilloscopes, logic analyzers, and JTAG/SWD debuggers. Test Automation Scripting: Write automated test scripts (Python) to interface with completed hardware, streaming high-speed data for long-duration system characterization. Qualifications & Skills Education: B.S. or M.S. in Computer Science, Electrical Engineering, Computer Engineering, or a related field. Experience: 3+ years of professional experience in bare-metal and RTOS firmware development for complex electromechanical, robotic, or medical systems. Language Mastery: Highly proficient in C/C++ for deeply embedded microcontrollers. A passion for writing clean, modular, highly documented, and highly reliable code where failures can have physical consequences. Hardware Literacy: Ability to read schematics, locate debugging test points on a PCB, and use hardware laboratory diagnostic tools with confidence. Location This position is based at our facility in Somerville, MA. #J-18808-Ljbffr Mesodyne