Senior Data Scientist, Human Motion

San Francisco, CA /
Technology – Software /
Full-Time, Remote
Who We Are

Tonal is the smartest home gym and personal trainer. It has completely revolutionized the way people work out at home, with its sleek design and advanced A.I. technology. We’ve united a diverse team of experts and decades of research to reinvent strength training, making it more efficient, more effective and more engaging. 

With this in mind, we want to bring that same innovative approach to the workplace. At Tonal, we continue our shift of emphasis by growing our instrumental team. We collectively weave our knowledge and creativity, as we redefine the future of fitness. We are passionate about building products that transform lives, and building teams that transform the status quo. Together, we can be our strongest.  

What You Will Do

    • Architect and build machine learning models to learn human motion
    • Provide expert input on architecture of Tonal's data collection, analytics, infrastructure, and learning systems
    • Identify innovative opportunities for data-driven features
    • Develop algorithms to sense, understand, and derive insights on human motion while exercising using sensor data
    • Improve real-time rep and set detection from sensor data
    • Collaborate with ML, front-end, back-end, and firmware engineers to implement algorithms

Who You Are

    • Advanced degree in mathematical field or equivalent experience
    • 5+ years data science experience
    • Knowledge of machine learning and signal processing algorithms
    • Knowledge of data filtering and cleansing techniques
    • Strong knowledge of Python, SQL, and one of Java, C/C++, Kotlin, or Go
    • Team player with high integrity
    • Open to feedback and constantly striving to improve
    • High degree of self-awareness

Extra Credit

    • Experience with gyros and accelerometers, computer vision, or control theory

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, All requests will be addressed and responded to in accordance with Tonal’s Accessibility Policy and local legislation.