Senior Full Stack Software Engineer

Grip Fusion is a sports-technology startup building next-generation intelligent sporting equipment that combines pioneering grip sensors, advanced electronics, and personalized analytics to transform how athletes train, perform, and stay healthy. We operate at the intersection of hardware, software, data science, and applied biomechanics, turning high-resolution grip and motion data into actionable performance insights. We are well-funded for the next phase of growth and are seeking exceptionally talented and highly motivated individuals to help shape the future of sports tech.

This Senior Software Developer position is an opportunity to play a key role in a small but growing company to build an innovative and fun product. This is a role for a full‑stack generalist with a ‘poligot’ mindset and a diverse skill set who is interested in working in a fast‑paced, dynamic environment to create a cutting‑edge product. This senior individual contributor position is in‑person in Ann Arbor, MI.

• Create functionality to support new software features (mobile and web)
• Manage data infrastructure and work with Data Scientist/Signal Processing Engineer to incorporate analytical functionality into the product
• Provide dev ops and other operational support to keep everything running smoothly
• Evaluate tools and technologies for future use
• Mentor and develop junior engineers as they are hired

• 5+ years of experience with full-stack software development, creating both native iOS and Android applications and web applications
• 5+ years’ experience with relational databases, preferably including familiarity with PostgreSQL
• Expert level knowledge of Typescript, React, React Native + Expo, Python
• Experience building and maintaining a cloud-based software infrastructure, preferably using Amazon Web Services
• Experience incorporating high-dimensional device/hardware data into software products
• Work with mobile video
• 3D graphics (three.js) for interactive visuals and modeling
• Hardware and BLE device experience
• Digital signal processing
• Working knowledge of secure coding principles
• Practitioner of Agile, Test Driven Development, Continuous Integration. Comfortable using AI to accelerate efforts.

• Some familiarity or interest in sports, especially baseball or softball
• Ability to learn, adapt, and thrive in a dynamic and collaborative environment
• Work with stakeholders to incorporate new features
• Commitment to providing good UI/UX for the end user
• Strong problem solving skills including identifying problems and developing and evaluating options
• Good interpersonal skills including the ability to work as a member of a fast moving team.
• A strong commitment to quality
• A desire to learn new things and interest in the latest technologies
• Written and oral communication skills including the ability to be persuasive and adapt communications to the audience and issue
• Ability to manage your time effectively

• Bachelor or Masters degree in technical program or equivalent experience
• 5+ years of working experience

Grip Fusion is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.