Senior Software Engineer, Full-Stack Mobile

Who We Are

Tonal is the world’s smartest home gym and personal trainer. It is revolutionizing 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.

Tonal is looking for a passionate Senior Mobile developer to work cross-functionally with product, engineering, and design, and play a critical role in building the Mobile application that powers the world’s most intelligent personal trainer. You will be given the opportunity to solve challenging problems in the development of software for a unique consumer fitness product. You are entrepreneurial, thrive in a fast-paced, agile environment, and execute at an A-level.

Like us, you value clean, fast, high-performing, and maintainable software.

• Design, develop and maintain robust, complex features powered by intelligence, personalization, and computer vision
• Collaborate cross-functionally with product, design, and engineering teams to deliver high-quality, maintainable solutions of product deliverables
• Work on cross-platform engineering challenges to elevate the user journey and create seamless, engaging experiences
• Identify opportunities for improvement in architecture, code coverage, tooling, processes, and propose creative solutions
• Coordinate with onshore/offshore teams to streamline the development/testing activities
• Help build a quality-driven engineering culture that values innovation, continuous improvement, and team work
• Troubleshoot/triage customer issues and perform root cause analysis to identify improvement opportunities

• 5+ years of software development experience
• Proficient in design principles, architecture patterns and engineering best practices for Flutter based applications
• Extensive experience in iOS and/or Android Mobile Platform with backend services integration
• Experience in Swift and/or Kotlin programming languages
• Working knowledge of data analytics and logging tools such as Sentry, Amplitude, or Open Search
• Familiar with source control management, CI/CD workflow, and build/release processes
• High attention to detail, both in code and UI/UX with a creative approach to problem-solving
• Ability to effectively communicate with technical and non-technical stakeholders

• BA, BS, or MS in Computer Science/Engineering or equivalent
• Experience in hardware-software integration, computer visions and AI-based applications
• Familiarity with Apple Health and/or Google Health Connect platforms
• Passion for fitness, wellness, or health-tech industries

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.