Mid Mobile Developer – React Native/Expo

About the role

About Qualysoft

· 25 years of experience in software engineering, established in Vienna, Austria

· Active in Romania since 2007, with office in central Bucharest (Bd. Iancu de Hunedoara 54B)

· Delivering End to End IT Consulting Services - From Team Augmentation and Dedicated Teams to Custom Software Development

· We deliver scalable enterprise systems, intelligent automation frameworks, and digital transformation platforms

· Cross-industry experience by sustaining global players in BSFI (Banking, financial services and insurance), Telecom,Retail & E-commerce, Energy and Utilities, Automotive, Manufacturing, Logitics, High Tech

· Global Presence: Switzerland, Germany, Austria, Sweden, Hungary, Slovakia, Serbia, Romania, and Indonesia

· International team of 500+ software engineers

· Strategic partnerships: Microsoft Cloud Certified Partner, Tricentis Solutions Partner in Test Automation and Test Management, Creatio Exclusive Partner, Doxee Implementation Partner

· Powered by cutting-edge technologies: AI, Data & Analytics, Cloud, DevOps, IoT, and Test Automation.

· Project beneficiaries ranging from large-scale enterprises to startups

· Stable growth and revenue increase year over year, a resilient organisation in volatile IT market conditions

· Quality-first mindset, culture of innovation, and long-term client partnerships

· Global and local reach – trusted by key industry players in Europe and the US

Responsibilities Design, develop, test, and maintain cross-platform mobile applications using React Native and Expo.

• Build reusable, maintainable, and responsive mobile UI components.

• Integrate mobile applications with REST APIs and backend services.

• Implement authentication, authorization, secure data storage, and session management.

• Develop features using native mobile capabilities such as GPS/location, camera, notifications, background tasks, and device storage when required.

• Handle application state, networking, caching, offline scenarios, and synchronization.

• Optimize application performance, stability, startup time, and resource usage.

• Troubleshoot and resolve application defects, crashes, API integration issues, and platform-specific behavior.

• Write and maintain unit, integration, and UI tests.

• Participate in code reviews and contribute to improving mobile architecture, coding standards, and development practices.

• Support application builds, releases, and deployment to Apple App Store and Google Play.

• Collaborate with Product, QA, Backend, and DevOps teams throughout development, testing, release, and production support.

• Use GitHub Copilot and other approved AI-assisted development tools to improve coding, testing, refactoring, and development productivity while ensuring code quality and correctness.