I'm Duy Vu Tung, a Backend Developer based in Hanoi, Viet Nam. I specialize in Laravel, RESTful APIs, business logic systems, automation workflows, socket communication, and multi-account processing.
Backend Developer with practical experience in Laravel, Spring Boot, MySQL, Socket.io, Java automation clients, and REST API integration.
Technologies I use to build backend APIs, automation services, realtime systems, dashboards, and production-ready web applications.
Built backend modules for managing game accounts, service orders, user transactions, pricing logic, and balance workflows.
Developed backend APIs for prepaid card exchange, partner integration, card validation, transaction processing, and automated status workflows.
Created backend APIs connecting website and automation client, supporting account management, task tracking, service monitoring, and realtime communication.
Designed APIs for user management, task scheduling, automation workflows, authentication, persistence, and concurrent task execution.
Built automation features including auto farming, auto combat, character movement, REST API integration, socket sync, and multithreading.
Android app for browsing movies using TMDb API, Retrofit, RecyclerView, Glide image loading, and Firebase Cloud Messaging.
Designing APIs, database structures, service workflows, and business logic that are clean and maintainable.
Building systems that handle tasks, accounts, realtime communication, and background processing efficiently.
Improving query performance, concurrency handling, stability, and data consistency in backend services.
I'm open to backend, full-stack, Java/Spring Boot, Laravel, and automation-related opportunities.