Senior Mobile Engineer

About the Position

Senior Mobile Engineer

Bucharest

Software Development /

Hybrid

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About Qualysoft

Qualysoft is a software engineering company with 25 years of experience, established in Vienna, Austria, and active in Romania since 2007. We deliver end-to-end IT consulting services, from team augmentation and dedicated teams to custom software development. Our expertise spans across various industries, including BSFI, Telecom, Retail & E-commerce, Energy and Utilities, Automotive, Manufacturing, Logistics, and High Tech.

We are powered by cutting-edge technologies such as AI, Data & Analytics, Cloud, DevOps, IoT, and Test Automation. Our global presence includes Switzerland, Germany, Austria, Sweden, Hungary, Slovakia, Serbia, Romania, and Indonesia. With a team of over 500+ software engineers, we have strategic partnerships with Microsoft, Tricentis, Creatio, and Doxee.

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.

Requirements

• 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.

We Offer

• Premium medical package
• Lunch Tickets & Pluxee Card
• Bookster subscription
• 13th salary/yearly bonuses
• Enterprise job security with a startup mentality (diverse & engaging environment, international exposure, flat hierarchy) under the stability of a secure multinational
• A supportive culture (we value ownership, autonomy, and healthy work-life balance) with great colleagues, team events and activities
• Flexible working program and openness to remote work
• Collaborative mindset – employees shape their own benefits, tools, team events and internal practices
• Diverse opportunities in Software Development with international exposure
• Flexibility to choose projects aligned with your career path and technical goals
• Access to leading learning platforms, courses, and certifications (Pluralsight, Udemy, Microsoft, Google Cloud)
• Career growth & learning – mentorship programs, certifications, professional development opportunities, and above-market salary

We are an equal opportunity employer and value diversity. All employment decisions are made without regard to age, gender, disability, race, ethnicity, religion, sexual orientation, or any other protected characteristic. We encourage applicants from all backgrounds to apply.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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