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Senior Mobile Developer (all genders)

Zagreb / HR
Full-time
Permanent employee

About the job

We are looking for an experienced Senior Mobile Developer to build modern, reliable, and user-friendly mobile applications using React Native and Expo.

You will take ownership of complex mobile features, work closely with Product Owners and Designers, and help turn ideas into polished production-ready mobile experiences. A key focus of the role will be on push notifications, event-driven mobile workflows, deep linking, app lifecycle handling, and high-quality design implementation.

You should have strong React Native experience, practical Expo knowledge, and a good eye for UI, UX, and interaction details. We are also looking for someone curious about AI-assisted development, rapid prototyping, and modern ways of improving engineering productivity.

You

What you’ll do
  • Build and maintain React Native mobile applications using Expo 
  • Own mobile features from design handoff to production release 
  • Work closely with Product Owners and Designers 
  • Implement push notification flows, deep links, and event-driven user journeys 
  • Integrate REST APIs, authentication, analytics, and local storage 
  • Optimize mobile performance, reliability, and user experience 
  • Support app store releases for iOS and Android 
  • Improve mobile architecture, reusable components, and development workflows 
  • Use AI-assisted tools to speed up prototyping and delivery where appropriate 
What we’re looking for
  • 3+ years of professional software development experience 
  • Strong experience with React Native 
  • Practical experience with Expo and mobile release workflows 
  • Experience shipping production mobile apps 
  • Good understanding of iOS and Android platform differences 
  • Experience with push notifications, deep linking, app lifecycle, and mobile permissions 
  • Experience integrating APIs and authentication flows 
  • Good eye for design and ability to work from Figma 
  • Strong communication skills in English 
  • Proactive, pragmatic, and comfortable taking ownership 
Nice to have
  • Native iOS experience with Swift 
  • Native Android experience with Kotlin or Java 
  • Firebase experience, especially Cloud Messaging, Analytics, Crashlytics, or Remote Config 
  • CI/CD experience for mobile apps 
  • Automated testing experience 
  • Backend experience with Node.js, Python, PHP, Java, or similar

About us

What we do:
 
F24 is Europe’s leading Software-as-a-Service (SaaS) provider for resilience. More than 5,500 customers worldwide rely on F24’s digital solutions, which support companies and organisations through all areas of resilience. Solutions cover business messaging and service notification, emergency and mass notification, incident and crisis management, as well as governance, risk and compliance. 
 
F24 supports customers in virtually every sector ranging from energy, healthcare, industry, finance, IT, tourism and aviation to a wide variety of public organisations. Many years of international experience have made F24 experts in improving resilience with digital solutions. 
 
The company was founded in 2000 in Munich, where F24 AG’s head office is still located. Today, F24 supports companies and organisations in more than one hundred countries, via more than 20 locations in Europe and beyond. The F24 AG Board of Directors consists of F24 co-founder Christian Götz and the spokesperson Dr. Jörg Rahmer.

Find out more about working at F24 here.

Good reasons to work at F24:

  • Have a tangible impact! Work in an agile environment where you make an important contribution to the success of our customers and the future of our company.
  • Become part of our established company with an inspiring culture, flat hierarchies and our open, honest, innovative and supportive team!
  • Grow with us: We are a company on the road to success, experiencing steady international growth. You have the opportunity to help shape our development.  
  • Take advantage of our flexible working model: We rely on a combination of presence in our offices and work from home. This way we strengthen our team spirit and at the same time gives you the opportunity to achieve the best possible balance between private and professional life.