Embedded Systems Engineer — FreeRTOS About the Company Mesodyne builds compact, silent thermophotovoltaic generators — MIT-born LightCell tech that runs on any fuel and lasts 10x longer than batteries or engines.
We serve industrial and defense customers with active contracts and a growing pipeline.
About the Role We're looking for an Embedded Systems Engineer who loves being close to the hardware.
You'll develop the real-time "brain" of the LightCell — firmware running at the bare-metal and RTOS level on STM32 microcontrollers, directly controlling micro-pumps, proportional valves, high-current igniters, blowers, and other actuators.
What You'll Do Develop, test, and debug low-overhead C/C++ firmware implementing the state machines and real-time control loops that govern LightCell operations Architect and optimize multi-threaded tasks using FreeRTOS on STM32, ensuring precise scheduling, task prioritization, and low-latency safety controls Write and validate robust custom drivers for digital and analog peripherals over SPI, I2C, UART, and CAN Serve as the primary technical bridge at the hardware-firmware boundary, isolating bugs using oscilloscopes, logic analyzers, and JTAG/SWD debuggers Write automated test scripts (Python) to interface with hardware for high-speed data logging and long-duration system characterization What We're Looking For B.S. or M.S. in Computer Science, Electrical Engineering, Computer Engineering, or a related field 3+ years of professional experience in bare-metal or RTOS firmware development for complex electromechanical, robotic, or medical systems Strong C/C++ skills for deeply embedded microcontrollers, with a passion for clean, modular, well-documented code where failures have physical consequences Ability to read schematics, locate test points on a PCB, and confidently use hardware lab diagnostic tools Location On-site, full-time, in Somerville, MA.
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Embedded Systems Engineer — FreeRTOS • Somerville, MA, US
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