Tryzens Limited is a fast growing IT solutions consultancy based in the City of London with offices in Bulgaria, India and Australia. Our areas of expertise include delivery of eCommerce solutions, multi-channel retail solutions and project management amongst others. We provide best of breed solutions and services to several blue chip clients primarily within retail, financial services and other industries. We have built our delivery focused reputation upon technical innovation, in-depth business knowledge, and creative vision, all of which supports our objective of helping clients to gain true value from eCommerce. We love what we do and our clients love our work.
Position Summary
We are seeking a highly skilled Senior React Native Developer. As a key member of our mobile development team, you will be responsible for designing, developing, and maintaining high-performance, reliable, and scalable React Native applications that deliver exceptional user experiences.
Key Responsibilities
- Design, develop, and maintain high-performance mobile applications using React Native
- Implement custom modules and features for wine/alcohol trading, including auction systems, direct buy flows, and inventory management
- Integrate with external APIs and data providers such as Wine-Searcher and Liv-ex to surface real-time price fluctuations and historical data
- Develop and optimize transaction workflows to support secure and efficient trading
- Collaborate with product managers, UI/UX designers, and QA teams to deliver high-quality solutions
- Ensure scalability, maintainability, and performance of the platform through clean architecture and best practices
- Lead code reviews, mentor junior developers, and contribute to technical decision-making
- Write unit, integration, and API tests to ensure code quality
Requirements
- Minimum 5 years of professional experience in mobile application development, including at least 3 years with React Native
- Expert-level knowledge of React Native, JavaScript (ES6+), and TypeScript
- Strong understanding of mobile design principles, user interface guidelines, and best practices for both iOS and Android platforms
- Hands-on experience integrating native modules (Objective-C/Swift for iOS, Java/Kotlin for Android) within React Native apps
- Proven experience in performance optimization, memory management, and profiling mobile applications
- Deep experience working with popular React Native libraries and frameworks such as Expo and React Navigation
- Solid understanding of RESTful APIs, asynchronous programming, and network request handling in mobile environments
- Experience with automated testing frameworks (Jest, Detox, etc.) and test-driven development for mobile apps
- Familiarity with CI/CD pipelines for React Native projects and tools such as Fastlane, Bitrise, or App Center
- Proficiency in using Git-based version control systems such GitHub, Bitbucket or similar
- Experience working within Agile/Scrum development processes and participating in code reviews
Nice to Have
- Domain knowledge or personal interest in wine/alcohol trading or collectibles
- Experience with other frontend technologies like Angular or Vue.js
- Exposure to cloud platforms such as Azure or AWS
- Experience working with distributed systems and event-driven architecture
Benefits
- Competitive salary and performance-based bonuses
- Remote-friendly culture with flexible working hours
- Opportunity to work on an innovative platform transforming an age-old industry
- Collaborative, fast-paced team focused on quality and user experience
- Professional development support and learning opportunities