Junior Mobile Developer

Junior Mobile Developer Zagreb | Hybrid F24 is Europe's leading crisis management SaaS platform, trusted by governments, airlines, banks, and Fortune 500s in over 100 countries. When a major incident unfolds, our software is the system people rely on. Our Zagreb Tech Centre is already up and running. Wave 1 of our engineering team is in place, and we're now expanding into Wave 2, bringing in more senior engineers to accelerate the work already underway. Why F24? You'll be working on technology that genuinely matters. F24's Emergency Notification System (ENS) is a mission-critical platform for real-time crisis communication, used by millions of users globally. The mobile experience sits at the heart of that - and it's being built for the next generation, with cloud-native architecture, advanced mobile security, and offline-first capabilities. Your Tasks: Contribute to the development and maintenance of mobile applications using React Native and Expo.Work alongside experienced engineers to deliver new features and product enhancements.Collaborate with Product, Engineering, QA, and Architecture teams across Europe.Assist with testing, troubleshooting, and resolving application issues.Support improvements in application performance, reliability, and user experience.Participate in code reviews and learn engineering best practices.Contribute to automated testing and CI/CD processes. This Is an Opportunity To: Build software used by more than 5,500 organisations worldwide.Work on mobile applications that support customers during real emergency situations.Learn from experienced engineers and receive ongoing mentorship and support.Develop expertise in modern mobile technologies, development practices, and engineering tools.Join a collaborative team where knowledge-sharing and continuous learning are encouraged.Grow your career within a rapidly expanding engineering hub.Work closely with Product, Engineering, QA, and Architecture teams across Europe. What You'll Bring Commercial experience developing mobile applications with React Native, or strong personal/project experience.Exposure to Expo or a willingness to learn.A genuine interest in software engineering and building high-quality products.Familiarity with version control systems such as Git.Curiosity about emerging technologies, including AI-powered development tools such as Copilot.A collaborative mindset, eagerness to learn from others, and openness to feedback.Strong problem-solving skills and good communication abilities. Nice to Have Exposure to Swift, Kotlin, or Java.Experience with Firebase, REST APIs, or mobile data storage solutions.Understanding of automated testing concepts.Knowledge of CI/CD practices. Tech Stack: React Native | Expo | MobX | Swift | Kotlin/Java | Firebase | Realm | Axios | Docker | Kubernetes | CI/CD | Automated Testing About F24 F24 is Europe's leading provider of crisis management and emergency notification software. Trusted by more than 5,500 organisations globally, we're helping businesses protect their people, operations, and reputation when it matters most. If you're looking for a role where you can make a genuine impact while helping shape a growing engineering organisation, we'd love to hear from you. Salary is paying up to €26,971 (Gross) annually.