Senior React Native Developer
Flutter InternationalJob title: Senior React Native Developer
Location: Sofia
Overview of the role:
We are looking for a talented Senior React Native Developer to join our team. The successful applicant will work primarily on building and maintaining modern, scalable mobile applications using React Native, contributing to a smooth and performant user experience across both iOS and Android platforms.
The ideal candidate will not only develop but also mentor team members, lead technical discussions, and help shape the mobile architecture and best practices. This role is perfect for someone passionate about clean, maintainable code, mobile UI/UX best practices, and continuous improvement. Familiarity with native modules, state management libraries (like Redux), and performance optimization for mobile apps is a strong advantage.
This role follows a hybrid approach to working, allowing you to combine working from home with working in our modern offices. These discussions are between you and your manager to find the best pattern for you both, while recognising that quality time together is essential for keeping us mission-aligned.
Our teams work from a lively location nestled within this historic city. Enjoy the best of both worlds with winter and summer offices, tantalizing free snacks and a gaming paradise for endless entertainment.
What you’ll do:
Lead and participate in technical design discussions and decision-making
Mentor and guide junior and mid-level developers within the team
Identify areas for improvement in mobile architecture and drive technical excellence
Proactively contribute to the improvement of development processes and standards
Develop and maintain cross-platform mobile applications using React Native and modern JavaScript (ES6+) standards
Build scalable and maintainable mobile UI components, with a strong focus on performance and mobile UX best practices
Collaborate with designers, backend developers, product owners, and stakeholders to implement intuitive and user-friendly mobile solutions
Integrate mobile apps with RESTful APIs, and other third-party services
Write clean, reusable, and testable code following best practices in mobile development and architecture
Debug, troubleshoot, and optimize mobile app performance across devices and platforms
Contribute to documentation, including component usage, architectural decisions, and mobile-specific guidelines
Ensure device and OS compatibility, including various screen sizes, resolutions, and operating systems
Participate in peer code reviews and uphold high standards for code quality and consistency across the mobile team
Perform related duties as assigned.
What you’ll bring:
Skills, Capabilities & Experience Required:
5+ years of professional experience in mobile development, with deep, hands-on expertise building and scaling applications using React Native and TypeScript
Proven experience leading complex mobile initiatives, driving technical decisions, and mentoring mid-level and junior developers
Deep understanding of the React Native ecosystem, including advanced component patterns, navigation, state management (Redux, Zustand, or similar), and architecture decisions
Strong track record of designing and delivering scalable, maintainable, and high-performance mobile applications in production environments
Extensive experience integrating mobile applications with RESTful APIs and managing complex data flows
Strong understanding of mobile UI/UX principles, accessibility standards, security considerations, and platform-specific design patterns for iOS and Android
Hands-on experience with native mobile development and building custom native modules, with comfort working in Swift/Objective-C (iOS) and Java/Kotlin (Android)
Experience working with WebView components, including embedding web content, handling navigation events, and integrating with native functionality
Proficiency in Git and collaborative, Git-based workflows, including experience working in monorepo setups
Strong experience with mobile testing strategies, including unit and integration testing (e.g., Jest, React Native Testing Library, Detox)
Familiarity with CI/CD pipelines for mobile, build and deployment automation (e.g., Fastlane), over-the-air updates, and performance monitoring tools (e.g., Firebase Performance)
Experience with cloud platforms and mobile deployment strategies (e.g., Firebase, AWS, App Store, Google Play)
Excellent written and verbal English communication skills, with the ability to collaborate effectively across engineering, product, and design teams
Personal Attributes:
Analytical, outcome-driven problem-solver with strong ownership and decision-making skills
Proactive, resourceful, and comfortable working independently in fast-moving environments
Detail-oriented while maintaining focus on delivery and impact
Adaptable and effective in managing changing priorities
Collaborative team player with a strong leadership and mentoring mindset
It’s ok if you don’t think you tick every box on this list. We love people who want to challenge themselves and are passionate about what they do. If you believe you can contribute in some areas and are eager to learn, we encourage you to apply.
Why choose us:
Aside from a generous base salary, we have a fantastic benefits & rewards program that is designed to encourage personal and career development.
Discretionary annual performance bonus
30 days paid leave
Health and Dental Insurance for you, your partner and your children (if you all live at the same address)
Personal life insurance and disability coverage
Wellbeing fund
Continuous learning support for certifications and career growth
26 weeks primary carer leave at 100% pay & 4 weeks secondary carer leave pay at 100% pay
A sports’ card membership valid across the country
Discounts as a compliment form us among different services
Monthly food vouchers
Equal opportunities:
At Flutter International we are committed to creating an inclusive environment where our people can be their authentic selves and thrive. We embrace and celebrate diversity, respecting all our uniqueness and differences.
We welcome you to let us know whether you have any accessibility needs. All you need to do is email us at talent@flutterint.com. Your journey with us is focused on ensuring you have what you need to be your best self.
Learn more about the works we are doing on Inclusion and Belonging here: https://careers.flutterinternational.com/working-at-flutter-international/diversity-equity-inclusion/
The group:
Flutter CEE is a proud member of the Flutter Entertainment family, a global leader in sports betting, iGaming, and entertainment. We're not just another company; we're listed on both the prestigious FTSE 100 index on the London Stock Exchange and the New York Stock Exchange (NYSE). What sets us apart is our world class brands, cutting-edge products, and our International division includes our operations in over 100 global markets and offers sports betting, casino, poker, rummy and lottery, mainly online. What truly defines us is our commitment to ensuring that the excitement of gaming and entertainment is experienced in a responsible and sustainable way. Our remarkable team of over 8,000 colleagues drives this vision, spread across 28 offices worldwide.