Senior React Native Engineer

Wunder Mobility builds the software that powers shared mobility worldwide. Our platform runs 20M+ successful trips yearly, processing 50M+ daily API calls, across 500 cities in Europe, the US, and Asia. Operators across cities like London, Copenhagen, and Singapore rely on us every day to move people forward.

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Why Join Us in Banja Luka

We’ve raised more than €100M over the last decade, gone through the tough restructuring phase, and are now profitable and focused. For engineers in Banja Luka, this means joining a stable, long-term company with a global product and a clear path to growth. We are fully committed to building our Banja Luka office as a key engineering hub. Your work here directly shapes how millions of people move in cities worldwide.

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The Role

You’ll own our React Native app that powers operators across multiple countries. Our app is undergoing a major overhaul in modern React, fully aligned with our new web architecture and design system (Storybook). We’re not just rewriting screens, but modernizing the stack and improving core user flows as we rebuild, so you’ll play an instrumental role in shaping the next generation of our mobile experience.

You’ll work closely with backend (Java Spring Boot), frontend (React), and design colleagues, delivering an app that people around the world rely on every day for their transportation needs from getting to work, connecting to public transit to taking a weekend trip.

What You’ll Do

• Work on shaping the future of our mobile app
• Collaborate in a cross-functional international team
• Lead design and delivery of large and complex features and systems end to end
• Drive performance, reliability, and code quality
• Provide strategies for seamless releases and roll-outs
• Shape team culture through consistent example and communication
• Mentor and coach teammates, fostering technical growth within the team
• Use AI as a force multiplier across the team

What You Bring

• Strong React Native experience in production apps
• Deep JavaScript/TypeScript knowledge
• State management skills (Redux, Context API)
• CI/CD, debugging, and performance optimization expertise
• Experience in effectively using AI tools (for example Claude Code) in your day-to-day work
• Excellent communicator with a bias for action
• Hands-on mindset, curious to explore the product, eager to learn
• Ability to work in English and collaborate across cultures

What You’ll Get

• International career in Banja Luka - no need to relocate
• Direct impact: your work reaches thousands of daily users
• 30 days workation: work from anywhere in the world once a year
• Time to recharge: take the time to rest and recharge
• Small senior team: fast decisions, high trust, visible impact
• Mentorship and growth: real responsibility, real opportunities
• Batteries included: drinks and snacks are available in our office

Send your CV and a short cover letter telling us why you're the best fit for the role!