Mobile App Developer (React Native + Node.js)

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 — you’ll 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. You’ll help transform this into a fully functional, scalable product ahead of the next ski season.

About the Role

You’ll 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 you’ll 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 We’re Looking For

We’re 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 you’re ready to build something innovative with real-world impact — and you want to play a leading role in its success — we’d love to hear from you