Buymed

Overview of job

About the Role

The Senior Mobile Developer is responsible for architecting, building, and optimizing high-quality mobile applications that serve users. This role drives technical excellence across the mobile stack, ensures best-in-class performance, and collaborates closely with Product, Design, Backend, and QA to deliver seamless user experiences.

Key Responsibilities

1. Mobile Engineering & Development

• Architect, design, and develop mobile applications (iOS / Android / Flutter / React Native depending on stack).
• Implement new features, modules, and mobile-specific components.
• Integrate backend services, authentication systems, third-party SDKs, and internal microservices.
• Ensure app security, OS compliance, and robust data protection.

2. Performance, Quality & Reliability

• Optimize load time, memory usage, battery consumption, and network efficiency.
• Troubleshoot production issues, debug complex problems, and plan long-term fixes.
• Maintain high code quality through code reviews, refactoring, and CI/CD best practices.

3. Architecture, Planning & Collaboration

• Contribute to architectural decisions and the long-term mobile technical roadmap.
• Work with PM/PO and Business/Operations teams to estimate, plan, and deliver sprint work.
• Collaborate with Design, Backend, and QA to clarify requirements and ensure feasibility.

4. Technical Ownership & Mentorship

• Act as the technical owner for assigned mobile projects.
• Provide guidance on architecture, technology choices, and optimization strategies.
• Mentor junior/mid-level developers and uphold engineering standards.

• Performance & salary review yearly
• Paid social insurance based on full salary
• Bao Viet Insurance
• Medical Checkup
• 15 days of annual leave
• Parking allowance

• 5+ years of hands-on mobile development experience.
• Strong proficiency in at least one core tech stack: Android (Kotlin/Java), iOS (Swift/Objective-C), React Native (JS/TS), or Flutter (Dart).
• Deep understanding of: Mobile architecture patterns (MVVM, Clean Architecture, Redux, VIPER, Bloc…) RESTful APIs, GraphQL, WebSockets.
• State management and offline-first design.
• Firebase, analytics, crash reporting & performance monitoring.
• Experience publishing and maintaining apps on App Store / Google Play.
• Strong debugging, profiling, and optimization capability.
• Familiarity with Git, CI/CD, and automated testing frameworks.