Senior Mobile Developer

We are looking for a hands-on Senior Mobile Developer (React Native) to join our international engineering team. At SEON, you will work on two mission-critical mobile applications that form the core of our safety and emergency response platform. You will collaborate closely with Backend, Frontend, Product, and Engineering leadership to build reliable, high-quality mobile experiences that help organizations protect people and respond to critical events faster. If you enjoy owning features end-to-end, shaping mobile architecture, and working on technology with real-world impact, this role is a great fit.

Aufgaben

• Develop, maintain, and enhance our React Native (Expo) apps: User App and Responder App
• Take ownership of mobile architecture and contribute to long-term technical decisions
• Implement features involving offline functionality, maps & geolocation, secure data handling, and real-time interactions
• Ensure performance, stability, and a great user experience across iOS and Android
• Work closely with our Product Owner and engineering team to refine requirements
• Participate in code reviews, testing, and continuous improvement of development processes
• Collaborate across disciplines to deliver high-quality, mission-critical software

• 3+ years of experience building mobile applications with React Native
• Strong knowledge of JavaScript/TypeScript and mobile architecture patterns
• Experience with offline-first capabilities, maps & geolocation services, and mobile security best practices
• Familiarity with REST APIs; experience with Ruby on Rails is a plus
• Hands-on, ownership-driven mindset with attention to detail and quality
• Ability to work mostly overlapping with CET (±2 hours)
• English fluency; German is a plus
• Valid work authorization for Germany (employment via SEON GmbH)

• Fully remote work setup within CET ±2 hours, with optional access to our offices in Hamburg and Cape Town
• Participation in our VSOP equity program
• Competitive salary and a high-flexibility, trust-based work culture
• Work on a product that directly contributes to faster, safer emergency response
• Join an international, collaborative team with modern technologies (React Native, Expo, React, Ruby on Rails)
• Real ownership and influence on the direction of our mobile applications
• Opportunity to build technology that truly makes a difference