Senior Mobile Engineer

**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.
• Define and evolve mobile application architecture, including navigation, state management, and reusable

components.

• Integrate mobile applications with REST APIs and backend services
• Implement authentication, authorization, secure data storage, and session management.
• Develop features using native capabilities such as location, camera, push notifications, and device storage.
• Handle offline scenarios, caching, and data synchronization.
• Optimize application performance, stability, and resource usage.
• Troubleshoot and resolve defects, crashes, and platform-specific issues.
• Write and maintain unit and UI tests.
• Lead code reviews and contribute to mobile coding standards and best practices.
• Use GitHub Copilot and other approved AI-assisted development tools to improve productivity, while ensuring

code quality and correctness.

• Mentor mid-level and junior developers and collaborate with Product, QA, and Backend teams.

Qualifications

• At least 6 years of professional software development experience, of which at least 4 years with React Native.
• Practical experience with Expo and the Expo ecosystem.
• Very good knowledge of JavaScript and TypeScript.
• Good understanding of React concepts, hooks, component architecture, and state management (e.g. Redux

Toolkit, Zustand, React Query).

• Experience with mobile navigation, local storage, and asynchronous data handling.
• Good understanding of iOS and Android platform differences and the mobile application lifecycle.
• Experience integrating with REST APIs and implementing authentication and secure storage.
• Experience with debugging and performance optimization of mobile applications.
• Experience with mobile testing tools (e.g. Jest, React Native Testing Library).
• Practical experience using GitHub Copilot or similar AI-assisted development tools, while maintaining

responsibility for code quality and correctness.

• Experience with Git and code review processes.
• Good communication, collaboration, and mentoring skills