Transform your workouts with Tonal, the leader in smart home gym equipment. Get AI-powered training and full-body workouts in a sleek, space-saving design. Backed by Sapphire.
About the role
Tonal is looking for a Senior Power Electronics Firmware Engineer to develop the firmware for our motor drive and power systems. That drive generates up to 250 pounds of digital weight, so its firmware defines how Tonal feels to every member. You’ll contribute at every stage, from concept, prototyping, and bring-up through validation and high-volume production. Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking for
- 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, experience in C++ and Python is also valuable
- Experience developing multithreaded firmware on an RTOS, including scheduling, synchronization, and interrupt handling for timing-critical tasks
- Hands-on experience implementing FOC for PMSM/BLDC motors, including current-loop tuning and sensored or sensorless position estimation
- Solid power electronics fundamentals: inverters, DC-DC converters, PWM techniques such as 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
More about this role
Tonal is looking for a Senior Power Electronics Firmware Engineer to develop the firmware for our motor drive and power systems. That drive generates up to 250 pounds of digital weight, so its firmware defines how Tonal feels to every member. You’ll contribute at every stage, from concept, prototyping, and bring-up through validation and high-volume production.
You’ll join the Firmware team in our Hardware department, working closely with electrical, mechanical, and software engineers. Together, you’ll tackle challenges that span motor control, power conversion, thermal limits, and member safety. Our team offers a rare chance to shape the core technology of a new fitness category.
Develop and improve motor control and power management firmware that makes Tonal’s digital weight feel smooth and responsive
Add and maintain protection features, such as overcurrent and overtemperature handling, that keep members safe
Bring up and debug new boards in the lab with the electrical team
Test and tune motor performance, and help build the tools and automated tests that validate each release
Support manufacturing test and calibration, and help investigate issues from the field
Work with...
Browse similar: Startup jobs · San Francisco Bay Area