Senior Power Electronics Firmware Engineer (Motor Control)

Location: San Francisco, CA, United States

Salary: $170K–$195K plus equity

Company

hirify.global develops connected fitness hardware featuring digitally controlled resistance and motor-driven power systems.

What you will do

• Develop and improve motor-control and power-management firmware for smooth, responsive digital weight.
• Implement protection features including overcurrent and overtemperature handling for member safety.
• Bring up and debug new boards with electrical engineers in the lab.
• Test and tune motor performance and build tools and automated tests for release validation.
• Support manufacturing test and calibration and investigate field issues.
• Collaborate with software, mechanical, and product teams on firmware improvements, design reviews, and development practices.

Requirements

• 5+ years of embedded firmware development, including 3+ years focused on motor control or power electronics.
• Expert C development for real-time, resource-constrained systems; C++ and Python experience is valuable.
• Experience developing multithreaded firmware on an RTOS, including scheduling, synchronization, and interrupt handling for timing-critical tasks.
• Hands-on FOC implementation for PMSM/BLDC motors, including current-loop tuning and sensored or sensorless position estimation.
• Strong power electronics fundamentals covering inverters, DC-DC converters, SVPWM, gate drivers, current and voltage sensing, and thermal behavior.
• Experience designing discrete-time control loops, filters, and observers and modeling them in MATLAB/Simulink or Python.
• Experience with motor-control MCUs or DSPs such as TI C2000, STM32, or NXP, plus CAN, UART, SPI, and I2C protocols.
• Experience with safety-critical systems, protection, fault handling, and diagnostics for high-power hardware.
• Comfort debugging at the hardware/firmware boundary with oscilloscopes, current and differential probes, power analyzers, and dynamometers; strong communication and teamwork skills are required.

Nice to have

• Functional or appliance safety standards experience, including IEC 60730, IEC 60335, IEC 61508, or ISO 26262.
• Experience managing regenerative energy in motor drives, digitally controlled power conversion, EMC/EMI and safety compliance testing, or high-volume consumer hardware.
• Experience with unit testing, SIL/HIL testing, Git, Jenkins or other CI tools, bootloaders, and secure over-the-air firmware updates.

Culture & Benefits

• Full-time role within the Technology / Hardware department.
• Collaborative work across firmware, electrical, mechanical, software, and product disciplines.
• Inclusive environment that values varied lived experiences, diverse perspectives, integrity, feedback, and continuous improvement.
• Employee experiences are designed to support professional growth and accessibility needs.