Mobile developer with 9+ years of experience specializing in Android application development. Proficient in Java and Kotlin, with hands-on experience building applications across various Android platforms including phones, tablets, TV, and Wear OS. Demonstrates strong English communication skills with a TOEIC score of 920, enabling effective collaboration in international teams.

Programming Languages: Kotlin, Java. 

Skills: 

• Kotlin, Java, Dart, Android native.

• Architecture: Android: MVVM + Clean Architecture.

• Experienced in developing applications for Android devices with different screen size: phone, tablet, TV and wear OS

• Experienced in working with git via Gitlab, Github.  

• Experienced in using Firebase features. (Firestore, Authentication, Crashlytics, Analytics, Remote Config)  

• Experienced with MVVM.  

• Experienced in using third party libraries and APIs.  

• Good knowledge in Object Oriented Programming.  

• Experienced in publishing applications to PlayStore  

• Can work well under pressure.  

• Can work well as part of a team or alone.  

• Strong communication skill.

Tools: Android Studio, Sublime Text, Git, Jira, Trello, Slack.

AI Smart Home Assistant – Netherlands  

Senior Android Developer, Feb 2026 - Present

Project description 

• Developed an AI-powered smart home application for monitoring household energy usage, connected devices, and daily consumption patterns.

• Integrated AI capabilities to analyze energy data and provide personalized recommendations for reducing energy consumption.

Responsibilities 

• Designed and developed the application using Kotlin, MVVM and Clean Architecture.

• Integrated Gemini Multimodal AI to analyze energy consumption data and provide personalized recommendations.

• Implemented device monitoring, energy dashboards, consumption history and smart notifications.

• Integrated CameraX for appliance recognition and device setup assistance.

• Optimized the application for Android phones, tablets and Wear OS.

• Implemented Firebase Analytics, Crashlytics and Remote Config for monitoring and feature management.

• Wrote unit and instrumentation tests and optimized application performance.

Technologies

• Kotlin, Android SDK, MVVM, Clean Architecture

• Coroutines/Flow, Room, Hilt

• Gemini Multimodal AI, CameraX

• Wear OS, Firebase, Retrofit

• JUnit, Mockito, Instrumentation Testing

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‍Music App - German 

Android Developer, Apr 2023 – Jan 2025

Project description 

• A music app and top cash rewards app to earn money

Responsibilities 

• Refactor app architecture based on MVVM

• RxJava for multithreading

• Retrofit for networking

• Glide for image loading

• ExoPlayer for playing audio

• Improve app startup time

• Bug fixing  

• Junit, Mockito, Robolectric for Unit testing

Technologies

• Kotlin, MVVM, RxJava, Retrofit, Glide, ExoPlayer, JUnit, Mockito, Robolectric

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Enterprise Business & Fintech App – Singapore

Android Developer, Dec 2021 – Apr 2023

Project description 

• Developed a comprehensive enterprise mobile application supporting core business operations such as accounting, invoicing, sales force automation, and digital payments. The solution also included a built-in digital wallet for seamless B2B transactions and internal tools for survey and inventory tracking, tailored for mid-sized to large companies in the business management and retail sectors.

Responsibilities 

• Designed and developed invoice and survey modules using MVVM and Kotlin Multiplatform

• Built and integrated a digital wallet SDK into the main application for payment features

• Implemented sales force and inspection workflows for internal teams

• Refactored legacy modules to improve performance and maintainability

• Fixed bugs, optimized UI performance, and ensured smooth integration across modules

• Worked with international teams across Singapore and Vietnam in an Agile setup

Technologies 

• Kotlin, Java, Kotlin Multiplatform, MVVM, MVP, RxJava, Coroutines

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Mobile Field Operations App – USA

Android Developer, Feb 2019 – Nov 2021

Project description 

• Developed and maintained a suite of Android applications supporting field operations for a U.S.-based enterprise. The system includes navigation, inspection tracking, and user activity logging to streamline workflows for mobile personnel.

Responsibilities 

• Maintain and enhance existing Android applications: navigation, inspection, and activity logging

• Collaborate with cross-functional teams to gather and refine requirements

• Optimize performance and battery consumption for long-running field use. …

• Implement robust offline-first functionality for unstable network environments.

• Represent the development team in client meetings and technical discussions.

• Write unit and instrumentation tests to ensure app stability and scalability

• Integrate CI/CD pipelines for automated builds and testing.

Technologies 

• Kotlin, MVVM, Room, LiveData, DataBinding, Instrumentation Testing, Unit Testing, CI/CD

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Mobile Camera Utility Suite – Canada 

Flutter Developer, May 2017 – Jan 2019

Project description 

• Contributed to the development and maintenance of an Android-based camera utility application used for various mobile workflows such as field inspections, navigation documentation, and visual logging. The app leverages the Camera2 API to deliver high-quality image capture features, tailored for enterprise use cases

Responsibilities

• Maintain and develop camera-based mobile applications tailored to enterprise use

• Integrate and optimize Android Camera2 API for capturing high-resolution images and videos.

• Implement features related to navigation, inspection tracking, and activity logging.

• Ensure backward compatibility across Android devices and OS versions.

• Collaborate with QA and backend teams to diagnose and fix camera-related issues.

• Conduct code reviews and participate in daily stand-ups with remote teams.

Technologies

• Java, Android SDK, Camera2 API, SQLite, Git, Android Studio

Education:

Ton Duc Thang University

Major: Information Technology