Senior Mobile EngineerQualysoft

Senior Mobile Engineer

Qualysoft

Location: Romania
Workplace: Hybrid
Job type: Full Time
Posted: Posted October 20, 2026

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Design and maintain cross-platform mobile apps with React Native and Expo
Requires 6+ years dev experience, 4+ with React Native, JS, TypeScript
Mentoring and code review responsibilities included
Hybrid role based in Bucharest, Romania

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

What 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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