Senior React Native + Node.js Developer

🚀 About Kilona.io

At Kilona.io, we build high-quality, high-speed web and mobile AI applications. We partner with ambitious global startups to create cutting-edge products that are fast, scalable, and beautifully engineered.

Right now, we’re looking for a Senior React Native + Node.js Developer who can take ownership of complex mobile products, contribute to backend architecture, and help scale modern AI-driven applications.

This role is ideal for someone who is deeply experienced in React Native development, comfortable making technical decisions, and confident working across both mobile and backend environments.

💼 What You'll Do

• Lead development and scaling of mobile applications using React Native
• Design, build, and optimize backend services and APIs using Node.js (Express.js)
• Improve application performance, scalability, and maintainability
• Collaborate closely with product, design, and engineering teams in a fast-moving remote environment
• Participate in technical planning, architecture discussions, and code reviews
• Help establish engineering best practices and maintain high code quality
• Mentor or support less experienced developers when needed

✅ Requirements

• 5+ years of commercial software development experience
• 4+ years of hands-on React Native experience (Expo OR CLI)
• Strong practical experience with Node.js and Express.js
• Experience designing and working with REST APIs and backend integrations
• Experience with databases and cloud services such as PostgreSQL, MongoDB, Firebase, Supabase, AWS DynamoDB, etc.
• Solid understanding of mobile architecture, app performance optimization, and production deployment
• Experience publishing and maintaining apps in the App Store and Google Play
• Good written and spoken English (B2+)

✨ Nice to Have

• Experience with CI/CD pipelines for mobile applications
• Experience working in startup or high-growth product environments
• Experience using AI-powered development tools (ChatGPT, Cursor AI, Lovable, V0, etc.) to speed up development
• Experience building scalable mobile products with strong backend logic

🧑‍💻 Working Conditions

• Hourly-based payment model
• Fully remote — work from anywhere
• Flexible schedule with focus on ownership and results
• Easy time-off policy — no unnecessary bureaucracy
• Work on innovative AI-driven products with a highly skilled international team
• Fast decision-making and direct communication

🔍 Hiring Process

1. Intro call or short screening (20–30 mins)
2. Technical interview (up to 1 hour)
3. Final interview (optional)
4. Offer 🎉

Interested? Let’s talk! 📨

We’re always excited to meet experienced engineers who love building ambitious products.