Senior Android Developer with over 8 years of experience in designing, developing, and maintaining high-quality Android applications. Proficient in building complex apps, optimizing performance, and integrating APIs. Experienced in leading teams, collaborating cross-functionally, and delivering innovative solutions to meet business needs. Worked on projects across various domains such as fintech, e-commerce, and social applications, serving clients in multiple countries.

• Programming Languages: Kotlin, Java 

• Frameworks & Libraries: Android SDK, Jetpack, Retrofit, Dagger,Hilt, RxJava, Coroutines

• Development Tools: Android Studio, Gradle, Git, Jenkins, Firebase

• Architectures: MVVM, MVP, Clean Architecture

• Integrations: RESTful APIs, GraphQL, WebSocket

• Testing: JUnit, Espresso, Mockito

• DevOps & CI/CD: Jenkins, GitHub Actions, Bitrise

• Others: Material Design, Push Notifications, Performance Optimization, Security Best Practices

E-commerce Mobile App – Singapore

Senior Android Developer, Jan 2024 – May 2025

Project description 

• Developed an e-commerce application enabling users to browse products, manage carts, process online payments, and track orders with a user-friendly interface and high performance.

Responsibilities 

• Led app development from design to deployment, ensuring adherence to UX/UI standards.

• Optimized app performance, reducing data loading time to under 2 seconds.

• Integrated payment gateways (Stripe, PayPal) and ensured secure transactions.

• Mentored 3 junior developers in adopting Clean Architecture principles.

Technologies 

• Kotlin, Android SDK, Jetpack Compose, Retrofit, Hilt, Room, Firebase, JUnit, Espresso

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Fintech Mobile App – United States

Senior Android Developer, Dec 2020 – Dec 2023

Project description 

• Built a financial application for managing personal investments, providing real-time market data, portfolio tracking, and secure transaction processing.

Responsibilities 

• Designed and implemented core features, including real-time data updates via WebSocket

• Improved app security by implementing encryption and biometric authentication.

• Collaborated with backend teams to define and integrate RESTful APIs.

• Conducted code reviews to ensure high code quality and maintainability.

Technologies 

• Java, Kotlin, Android SDK, RxJava, Dagger, Retrofit, WebSocket, Mockito, Jenkins

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Social Networking App – United Kingdom

Android Developer, July 2018 – Oct 2020

Project description 

• Developed a social networking app focused on connecting users through shared interests, featuring chat, media sharing, and personalized content feeds

Responsibilities 

• Implemented real-time chat functionality using WebSocket and push notifications.

• Optimized media loading and caching for seamless user experience

• Worked with designers to implement Material Design guidelines

• Wrote unit tests and UI tests to ensure feature reliability.  

Technologies 

• Java, Android SDK, Retrofit, Firebase, Material Design, JUnit, Espresso

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Healthcare Mobile App – Australia

Android Developer, May 2016 – Jun 2017

Project description 

• Created a healthcare app for patients to book appointments, access medical records, and communicate with healthcare providers securely.

Responsibilities

• Developed features for appointment scheduling and secure data access

• Integrated third-party APIs for telemedicine functionality.

• Ensured compliance with healthcare data privacy regulations (e.g., HIPAA).

• Optimized app for low-end devices to broaden accessibility.

• Deploy the application for our customers.

Technologies

• Java, Android SDK, Retrofit, Firebase, SQLite, JUnit

Education:

HCMC University of Technology (HUTECH)

Major: Computer Networking