Profile - Bùi Văn Duy

Flutter Developer

Building scalable mobile solutions with Clean Architecture, optimized performance, and seamless API integration

About Me

Flutter Developer specializing in Clean Architecture and high-performance mobile applications. Experienced in building scalable solutions with seamless API integration and optimized user experiences.

Technical Stack

Technologies and tools I use to build production-ready applications

Flutter
Dart
AWS
REST API
Git
Firebase

Featured Projects

Real-world applications demonstrating technical expertise and business impact

Viettel Enterprise Solution
FeaturedEnterprise

Viettel Enterprise Solution

Context

Enterprise mobile application for Viettel's internal operations and customer management

Role

Lead Flutter Developer - Architecture design, API integration, performance optimization

Tech Stack

FlutterClean ArchitectureREST APIState Management

Impact

Improved operational efficiency and streamlined customer service workflows

IoT Water Quality Monitoring
IoT

IoT Water Quality Monitoring System

Context

Real-time monitoring system for water quality parameters with cloud integration

Role

Full-stack Developer - Mobile app development, AWS IoT integration, real-time data visualization

Tech Stack

FlutterAWS IoT CoreDynamoDBMQTT

Impact

Enabled real-time monitoring with 99.9% uptime and instant alert notifications

GIS Mapping Application
GIS

GIS Mapping Application

Context

Geographic information system for field data collection and mapping

Role

Mobile Developer - Map integration, offline data sync, location services

Tech Stack

FlutterGoogle Maps APISQLiteGeolocation

Impact

Reduced field data collection time by 40% with offline-first architecture

E-commerce Platform
E-commerce

Customer Loyalty Platform

Context

Loyalty points management system for retail businesses

Role

Full-stack Developer - Backend API, admin dashboard, mobile integration

Tech Stack

ReactJSNodeJSMongoDBREST API

Impact

Increased customer retention by 25% through gamified rewards system

Facebook Chatbot
Chatbot

Facebook Chatbot with AI

Context

Automated customer service chatbot for Facebook Pages using OpenAI integration

Role

Backend Developer - Webhook integration, OpenAI API, conversation flow management

Tech Stack

NodeJSOpenAI APIFacebook Messenger APIWebhook

Impact

Reduced response time by 80% and handled 500+ daily customer inquiries automatically

Experience

Flutter Developer
Current
OS Viettel Software

• Participated in developing Vehicle Management and Business Trip modules for enterprise internal system • Built main business flows: request creation, approval process, and status tracking • Developed input forms, list screens, and detail screens with comprehensive validation • Integrated RESTful API to synchronize vehicle data, schedules, and business trip records • Optimized performance using pagination (load-more), caching, and handling loading/error/empty states • Applied BLoC and modular architecture to ensure scalability and long-term maintainability

Fresher Frontend Developer
2025
Novax

• Built web admin dashboards with modern frontend frameworks • Collaborated with backend teams for API integration

Information Technology Student
2021 - 2025
Hanoi University of Mining and Geology

High Quality Program • GPA: 3.43/4.0 • Expected graduation: June 2026

Let's Build Together

Ready to build scalable mobile products together? Let's discuss your next project.

Get In Touch
Available for Flutter development opportunities and collaborations

Phone

0327 868 763

Location

Hanoi, Vietnam

Let's build scalable mobile products together

Specialized in Flutter development with Clean Architecture, performance optimization, and seamless API integration