Mobile App Developer (React Native Node.js) Future CTO Potential Location: Remote (UK preferred) Salary: £50k£60k (flexible depending on experience) Tech Stack: React Native, Node.js, AI, Video Processing Looking for your next big opportunity to own a product from the ground up? Join a pioneering sports tech start-up building an AI-powered mobile coaching app for skiers helping users improve technique through video analysis and real-time feedback. This is not a typical dev job youll be working on something genuinely innovative, using joint-tracking tech, video streaming, and AI-powered coaching, with a roadmap toward becoming the CTO. About the App The app (with an early prototype already built) allows users to upload skiing videos, analyse movement using joint-tracking technology, and receive constructive feedback through an AI-powered chat assistant. Youll help transform this into a fully functional, scalable product ahead of the next ski season. About the Role Youll lead full-stack development (React Native Node.js), collaborating closely with the founders and UX designer in an iterative, design-driven process. This is a greenfield opportunity where youll shape the technical architecture, development roadmap, and future team. Key responsibilities: Develop and own the mobile app front to back (React Native Node.js) Build scalable APIs, cloud infrastructure, and CMS integrations Work from Figma prototypes through to production code Integrate AI tools and video analysis engines into a seamless user experience Optimise joint-tracking tech for accuracy and real-world performance Set the foundation for future team growth and CTO-level leadership Some UK travel may be needed for testing on indoor/dry ski slopes. What Were Looking For Were seeking a senior developer (or strong full-stack engineer) ready to take ownership and step into a leadership role. Essential skills and experience: Proven experience building production-grade mobile apps (ideally with React Native) Strong back-end development with Node.js and scalable cloud infrastructure (AWS, GCP or Azure) Comfortable with relational (PostgreSQL) and NoSQL (Firestore) databases Experience with video capture, playback, and media handling on mobile Understanding of AI integration, or willingness to learn rapidly Comfortable working independently in a fast-moving start-up environment Nice to have: Experience with LLM-based chat agents or feedback generation tools Background in joint-tracking, movement analysis, or sports tech Familiarity with CMS platforms (e.g. Contentful, Strapi) and dynamic content workflows An interest in skiing, coaching, or sports performance apps Why Join? Full ownership of an exciting greenfield product Opportunity to progress into a CTO role Flexible working hours and remote-first culture Input into technical decisions, roadmap, and team structure Bespoke benefits and possible equity or share options Apply Now If youre ready to build something innovative with real-world impact and you want to play a leading role in its success wed love to hear from you. ADZN1_UKTJ