Software Engineer · Mobile Developer

I am an Information Technology student and Software Engineer Intern who loves building scalable backend systems. My expertise spans across server-side development, mobile app development, and system integration. I enjoy solving real-world problems with control logic, clean architecture, and low-level optimization.

• Backend Development: Nest.js, Express.js.
• Frontend Development: React.js/Next.js.
• Databases & Caching: PostgreSQL, MySQL/MariaDB, MongoDB, SQLite, Redis
• Mobile Development: Flutter cross-platform UI, Native Android (Kotlin + Jetpack Compose).

• English: Working proficiency - able to read technical documentation and communicate effectively in the workplace.
• Mandarin Chinese: Currently studying HSK 3, with a strong commitment to achieving professional proficiency in Chinese.

An load-testing platform for evaluating the performance and resilience of user-controlled infrastructure.

• Resource Management: Manages networks, worker servers, methods, duration, and concurrent slots.
• Access Control: Supports JWT authentication, RBAC, permissions, roles, plans, and feature limits.
• Microservice Architecture: Separates test and payment execution into an independent service.
• Message Queue Coordination: Uses RabbitMQ to queue jobs and prevent worker slot conflicts.
• Backend Architecture: Built with modular NestJS, repositories, migrations, filters, and interceptors.
• Dashboard: Uses React to manage users, roles, plans, networks, servers, and test jobs.
• Tech: NestJS, TypeScript, React, PostgreSQL, Drizzle ORM, Redis, RabbitMQ, JWT, Swagger, Docker.

A full-stack messaging application supporting real-time conversations, media sharing, push notifications, and audio/video calls.

• Backend: Implements JWT authentication, private and group conversations, message reactions, participant roles, user blocking, media uploads, and password recovery.
• Real-Time Communication: Uses Socket.IO for messaging and WebRTC signaling, with a self-hosted Coturn server for reliable call connectivity behind NAT and firewalls.
• Mobile App: Built with Flutter using BLoC/Cubit architecture, persistent sessions, local notifications, media playback, message search, and file sharing.
• Deployment: Set up CI/CD with GitHub Actions for automated Docker builds and SSH-based VM deployment.
• Tech: NestJS, TypeScript, Flutter, Dart, MongoDB, TypeORM, Socket.IO, WebRTC, Firebase Cloud Messaging, S3-compatible storage, Docker.

A reusable Express.js starter designed for building structured and scalable TypeScript backend applications.

• Modular Architecture: Organizes features into controllers, services, entities, DTOs, and middleware.
• Dependency Injection: Uses InversifyJS to manage services, databases, controllers, and Socket.IO.
• Custom Decorators: Provides controller, route, and middleware decorators similar to NestJS.
• Validation: Supports request transformation and DTO validation with class-transformer and class-validator.
• Database: Integrates PostgreSQL through MikroORM with repositories and migrations.
• Request Context: Uses AsyncLocalStorage to access request and response instances across services.
• Real-Time Support: Includes Socket.IO for WebSocket-based features.
• Tech: Express.js, TypeScript, PostgreSQL, MikroORM, InversifyJS, Socket.IO.

• Listening to music
• Play games
• Reverse engineering (C# applications, Unity games, APKs)

• GitHub: il2dottore
• Email: vongocbao1392005@gmail.com

Thanks for stopping by! 🚀