---
title: 'Senior Power Electronics Firmware Engineer at Tonal'
canonical: 'https://feeny.ai/job/senior-power-electronics-firmware-engineer-tonal-san-francisco-cz2caknm7se3'
type: 'job'
last_seen: '2026-11-06'
---

# Senior Power Electronics Firmware Engineer at Tonal

- **Company:** Tonal
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Posted:** 2026-11-05
- **Last confirmed live:** 2026-11-06
- **Apply:** https://jobs.ashbyhq.com/tonal/190019da-e472-40d8-b6d4-5c6fed96e3c8

## Job description

## Overview

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.

## What You Will Do

- 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 software, mechanical, and product teams to turn member feedback into firmware improvements
- Take part in design and code reviews, and help improve how the team builds and ships firmware

## Who You Are

- 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
- Experience with motor-control MCUs or DSPs (e.g., TI C2000, STM32, NXP) and communication protocols such as CAN, UART, SPI, and I2C
- Experience with safety-critical systems, including protection, fault handling, and diagnostics for high-power hardware
- Comfortable debugging at the hardware/firmware boundary with oscilloscopes, current and differential probes, power analyzers, and dynamometers
- Creative problem solver who isn’t afraid to push boundaries and think differently, with high attention to detail
- Great oral and written communication skills
- Team player with high integrity and self-awareness, open to feedback and constantly striving to improve

Extra Credit

- Experience with functional or appliance safety standards, such as IEC 60730 (Class B software), IEC 60335, IEC 61508, or ISO 26262
- Experience managing regenerative energy in motor drives, such as braking resistor control and DC bus regulation
- Experience with digitally controlled power conversion, such as PFC or DC-DC stages
- Experience with unit testing, software- and hardware-in-the-loop (SIL/HIL) testing, Git, and CI tools such as Jenkins
- Experience with EMC/EMI and safety compliance testing for motor drives
- Experience with bootloaders and secure over-the-air firmware updates
- Experience shipping high-volume consumer hardware

At Tonal, we believe that the unique and varied lived experiences of our teammates contribute to our overall strength. We don’t just appreciate differences, we celebrate them, and we always seek people that represent a wide variety of backgrounds. We’re dedicated to adding new perspectives to the team and designing employee experiences that contribute to your growth as much as you do to ours. If your experience aligns with what we’re looking for (even if you don’t check every single box), send us your application. We would love to hear from you!

Tonal is committed to meeting the diverse needs of people with disabilities in a timely manner that is consistent with the principles of independence, dignity, integration, and equality of opportunity. Should you have any accommodation requests, please reach out to us via our confidential email, accessibility@tonal.com. All requests will be addressed and responded to in accordance with Tonal’s Accessibility Policy and local legislation.

## About Tonal

## Company Overview
- **One-liner**: Tonal develops a smart home gym system that uses digital resistance, electromagnets, and AI to provide personalized strength training.
- **Entity Type**: Private (Venture Capital-backed; Series F completed in 2023; latest debt round in March 2026)
- **Headquarters**: San Francisco, California, USA
- **Founded**: 2015
- **Founders**: Aly Orady (Founder & Advisor; former CEO and CTO)

## Core Business
- **Primary industry**: Smart fitness equipment / Recreational goods (connected home gym hardware & subscription software)
- **Target customers**: B2C – individuals and households seeking home strength training
- **Mission / purpose statement**: “Help everyone find their inner strength” and “make strength training accessible to all”

## Products & Services
- **Tonal Smart Home Gym**: A wall-mounted unit with digital weight resistance (up to 200+ lbs), touchscreen display, sensors, and AI-powered coaching. Replaces free weights, barbells, and cable machines.
- **Tonal Membership**: $59.95/month (12-month commitment) – includes personalized workout programs, automatic weight adjustment, advanced lifting modes (e.g., Drop Sets), form feedback, progress tracking, and unlimited user profiles per household.

## Market Standing
- **Valuation / Market Cap**: Not publicly disclosed. Post-money valuation from earlier rounds is unknown; the latest round (Debt – $20M in March 2026) carries no valuation.
- **Key Metric (Private)**: Total funding raised ≈ **$678M** as of March 2026 (includes Series A through Series F and debt).
- **Notable Investors**: L Catterton (operating partner Todd Bartee joined as CEO), Sapphire Ventures, Team Builder Ventures, NextEquity Partners, Skip Capital, Big Loud Capital, and over 55 total investors.
- **Growth Signals**: 
  - New CEO Todd Bartee (Feb 2026) brings scaling expertise from L Catterton portfolio companies.
  - New CFO Hayden Tollas (Sept 2025) from Gap Inc. / Old Navy.
  - Debt financing of $20M in March 2026 indicates continued capital to support operations or growth.
  - Headcount of ~393 employees (as of mid-2026).
  - Active patent filings (e.g., drop set mode, form feedback, reserve estimates).

## Competitive Advantages
- **Digital resistance technology**: Uses electromagnets and real-time algorithms to adjust weight in 1‑lb increments, eliminating physical plates and racks.
- **AI‑driven personalization**: Automatically learns user strength and recommends adjustments; advanced modes (e.g., drop sets) that would require manual intervention in traditional gyms.
- **Compact, all-in-one design**: Fits in a home environment while delivering a full strength-training gym experience.
- **Proprietary IP**: Dozens of active patents covering digital exercise devices, form feedback, and resistance control.

## Strategic Focus
- **Scaling the consumer brand**: New CEO Todd Bartee aims to drive profitable growth and expand market reach, leveraging his DTC and consumer goods experience.
- **Product & content innovation**: Continued investment in software features (form feedback, new lifting modes) and content (workout programs, coaching).
- **Financial discipline**: Bringing in a CFO with retail/omni-channel background suggests focus on unit economics, profitability, and possible retail expansion.

## Why Work Here
- **Mission-driven culture**: “Tight-knit group of builders, thinkers, coaches, creators” dedicated to transforming fitness.
- **Work environment**: Hybrid/office presence in San Francisco HQ, New York Studio, and Toronto office. Bi-weekly catered team lunches, stocked kitchens, and a Tonal loaner program for employees.
- **Benefits**: Competitive salary, top-tier health care, commuter benefits, parental leave, mental health support, retirement savings, flexible time off, and Tonal discounts for employees and their families.
- **Inclusive atmosphere**: Emphasis on diversity and belonging; “welcome talented people with unique perspectives.”
- **Engineering & product focus**: Opportunities across hardware, software, data, and content teams; exposure to cutting-edge AI/ML and IoT.

## Sources
1. [tonal.com](https://tonal.com/pages/about) – Company overview, leadership, mission
2. [tonal.com](https://tonal.com/pages/careers) – Culture, perks, benefits
3. [pitchbook.com](https://pitchbook.com/profiles/company/125615-62) – Funding history, headcount, investor list
4. [tonal.com](https://tonal.com/) – Product details, membership pricing
5. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/tonal) – Current job openings

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