🚀 Mid–Senior Full Stack Engineer (React Native + React/Vite + Ruby)

🚀 Mid–Senior Full Stack Engineer (React Native + React/Vite + Ruby)

📍 Fully Remote

💰 £60,000 (€70,000) + Equity

We're hiring a Mid–Senior Full Stack Engineer to help scale a rapidly growing AI startup whose products are already used by hundreds of thousands of users worldwide.

This is a hands-on role for someone who loves shipping product, moving fast, and taking ownership. You'll work directly with the founders to build and scale mobile, web, and backend systems that have immediate user impact.

What you'll be doing

✅ Building end-to-end features from API design through to production deployment

✅ Developing across mobile, web, and backend systems

✅ Improving scalability, reliability, and performance

✅ Working closely with the CTO and CEO on product direction

✅ Using modern AI tooling to accelerate development

Tech Stack

Backend

• Ruby on Rails
• PostgreSQL

Mobile

• React Native
• TypeScript
• Expo

Web

• React Native for Web
• Vite

Infrastructure

• AWS
• Qovery
• GitHub Actions
• Sentry
• Datadog

AI Tooling

• Cursor
• Claude

What we're looking for

Required

• 4+ years' experience as a Full Stack Engineer
• Strong React experience, including production use of Vite
• Comfortable shipping features end-to-end
• Enjoy working in fast-moving, ambiguous environments
• Strong ownership mentality and ability to work autonomously

Nice to Have

• Ruby on Rails experience
• React Native experience
• Previous startup or founder experience

Why join?

🌍 Fully remote (Founders are based in London - so meet ups here are welcomed)

📈 Meaningful equity package

🚀 Huge product and engineering ownership

🤝 Direct access to founders and decision-makers

📱 AI product already serving hundreds of thousands of users

Interview Process

1. Introductory call with the CTO
2. Follow-up conversation with CTO + CEO
3. Paid 3-day trial working on real product challenges

We're actively interviewing and can move quickly for the right candidate.