As an experienced mobile developer with 6 years of experience in Android development and 3 years of experience in Flutter development, I have a deep understanding of the mobile app development process and the technologies that power it. I have built and deployed numerous mobile applications including maintenance projects and projects from scratch.

Programming Languages: Kotlin, Java, Dart. 

Skills: 

• Kotlin, Java, Dart, Android native, Flutter.

• Architecture:

• Android: MVVM + Clean Architecture.

• Flutter: Bloc / Getx / RiverPod / Provider + Clean Architecture.

• Dependency Injection: Dagger/Koin for android. GetIt, Injectable for flutter.

• Object-oriented methodology.

• Reactive programming: RxAndroid, RxJava, RxDart, Coroutine Flow.

• Database: Room, realm, SQLite.

Tools: Android Studio, Git.

Medical Performance Tracking App - German 

Flutter Developer, Apr 2024 – Jan 2025

Project description 

• Developed a companion mobile application that enables doctors to track and archive their medical performance using data collected from electrosurgical devices.

Responsibilities 

• Implement features:  

• Compare screen: compare your performance to other doctors

• Doctor list: search and listing doctors

• U ser profile

• Login (using AppAuth)

• Writing Unit Test

• Writing Automation Test

Technologies 

• Flutter, Riverpod, flutter_hooks

• Go_router package for app navigation

• Flutter_appauth

• Mockito

• Maestro for writing automation test

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Work Order App – Switzerland 

Flutter Developer, Dec 2023 – Apr 2024

Project description 

• A mobile application where you can easily place requests and apply for orders

• User can switch between Seller and buyer roles

Responsibilities 

• Build project structure

• Implement all app screens

• Implement Chat feature (text only) using signalr

• Implement social login: Google, Apple.

• Fixing bugs

• Deploy the application to stores

Technologies 

• Flutter, Bloc

• Injectable, get_it for DI

• auto_route package for app navigation

• Firebase Messaging

• Signalr_core: Flutter SignalR client for ASP.Net Core

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Loyalty App – HongKong 

Android Developer, July 2023 – Oct 2023

Project description 

• Build a loyalty app where the members can earn and use their reward points

Responsibilities 

• Build project structure

• Implement Common UI

• Implement app screens: Login, Register, Find Stores (show on Map), My Rewards, Profile …

• Fixing bugs, supporting team members and maintaining.

Technologies 

• Clean Architecture, MVVM, Coroutine/Flow, Koin, Google Maps, Navigation Component

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Career Exploration App – Canada 

Flutter Developer, May 2022 – July 2022

Project description 

• Build an application to help restaurant employees map their way to a future career.

Responsibilities

• Implement App navigation.  

• Implement chat bot feature.  

• Implement app screens: Discover Careers, Recommend Jobs, Goals Progress, Chat screen, User Settings…  

• Implement login by Auth0  

• Fixing bugs, supporting team members and maintaining.  

• Deploy the application for our customers.

Technologies

• Flutter, Getx, Dialogflow (Chat bot), Auth0

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Quizz App – England

Flutter Developer, Apr 2022 – May 2022

Project description 

• This application let schools add extra activities for their students by doing quizzes and challenges as a group or team  

Responsibilities

• Implement quizzes and challenges screen.  

• Integrate Lottie.  

• Integrate firebase notification.  

• Fixing bugs, supporting and maintaining.

Technologies

• Flutter, Getx, Lottie animation, Firebase notification.

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Asset Management App – Australia

Flutter Developer, Nov 2021 – Mar 2022

Project description 

• App for tagger (worker) to manage assets.  

• Offline mode available  

Responsibilities

• Implement app screens: Asset List, Create/Edit Order, Submit Order, Scan Screen…

• Implement offline mode.

• Implement login by Auth0

• Fixing bugs, supporting and maintaining.

Technologies

• Flutter, Getx, Caching data, Floor database, Scan QR code, Firebase notification, Auth0

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POS App (Point of Sale App) – United States 

Android Developer, Mar 2021 – Nov 2021

Project description 

• Ecommerce Application  

• Beautiful and friendly UI

Responsibilities

• Build UI from the design  

• Implement features: Landing page, Cart, Payment, Search, Product List, Login with AppAuth  

• Fixing bugs, supporting and maintaining.

Technologies

• Clean Architecture, MVVM, Coroutine/Flow, Koin, Room DB, AppAuth (Open id) for Authentication, Google Maps.

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Tracking App – Viet Nam

Android Developer, July 2020 – Nov 2020

Project description 

• Tracking user’s trips after one-time successful pairing with bike via Bluetooth.

• Visualizing trips history on a map route with detailed information such as trip distance, total distance, average speed, duration, CO2 saved…

Responsibilities

• Designed the app architecture using MVVM and Clean Architecture principles

• Integrated BLE (Bluetooth Low Energy) communication to scan and connect with IoT-enabled bicycles.

• Show user trips on google map

• Show real time trip’s statistic chart

• Implement app screens: Landing page, User Trips, Leaderboards, User Settings, Login/Register…  

• Fixing bugs, supporting and maintaining.

Technologies

• Clean Architecture, MVVM, Rx, Dagger, Room DB, Google Map, BLE (Bluetooth Low Energy)

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Employee Management App – Vietnam

Flutter Developer, Nov 2020 – Mar 2021

Project description 

• Built a mobile application for a company in Vietnam to manage workforce operations, including tracking working hours, handling leave requests, and managing company assets    

Responsibilities

• Build UI from the design

• Implement features: logtime, booking, manage assets, notification.

• Fixing bugs.

Technologies

• Flutter, Bloc, Caching data, Firebase notification

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Invoice Statistics App – Germany

Android Developer, Apr 2020 – Sep 2020

Project description 

• This app helps you monitor the monthly costs and usage of your business mobile phone contracts in an easy way  

• Support Portrait and Landscape mode  

• Support phone and table

Responsibilities

• Build UI from the design

• Implement chart views

• Fixing bugs.

Technologies

• MP Chart, MVVM, Clean Architecture, Rx, Dagger

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Work Order Management App – Singapore

Android Developer, Oct 2019 – Mar 2020

Project description   

• App for the technician to manage work orders.

• Offline mode available. Technician can update the work order in offline mode.

• Using web view to interact with the 3D assets.

• Support phone and tablet.

Responsibilities

• Implement offline mode

• Communicate with the 3D webview base using js.

• Implement app screens: Work Order List, Work Order Detail, Update Work Order, Create Work Order, Asset Viewer, User Setting…  

• Fixing bugs

Technologies

• Clean Architecture, MVVM, Rx, Dagger, Realm database, Firebase notification

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Survey App – Singapore 

Android Developer, Jan 2019 – September 2024

Project description 

• This app is Singapore’s online survey community created for you to share an opinion on issues that matter.

Responsibilities

• Implement screens: Survey List, App Setting, Profile Setting, Landing page, Redeem Voucher, Onboarding, User Activity History, Mataninance mode, Login/Regisster …

• Fixing bugs.

• Deploy app to google store

Technologies

• MVVM, Rx, Dagger, Location service

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Aromatherapy App

Flutter Developer, May 2018 – July 2018

Project description 

• Collaborate with the Cambodia team to complete development tasks.  

• Develop a ride-sharing application similar to Uber.

Responsibilities

• Implement some features following specification.  

• Research new techniques to apply to projects.

• Fixing bugs, supporting and maintaining. 

Technologies

• Objective C, RESTful API.

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Essential Oil Blending App – France 

iOS Developer, June 2016 – December 2016

Project description 

• Developed a mobile application that helps users create customized essential oil blends without requiring prior aromatherapy knowledge. The app provides a guided, user-friendly interface for selecting ingredients and generating blend recommendations.

Responsibilities

• Build UI from the design

• Implement in app purchase

• Fixing bugs.

Technologies

• Flutter, Firebase firestore, Firebase Auth, In app purchase

Education:

HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY

Major: Database Management