FULL-STACK DEVELOPER

Hai Vinh's
Lab

Specializing in scalable NestJS backends and high-performance Next.js frontends for global markets.

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About Me

Engineering quality and scalability

I am a full-stack engineer with over five years of experience building scalable web and mobile solutions using NestJS and Next.js. I specialize in developing production-ready systems for the Australian and Japanese markets, ranging from enterprise IoT platforms to high-traffic e-commerce ecosystems. Currently available for freelance partnerships, I focus on delivering robust, high-performance architecture that drives business value.

Open Source

NPM Packages

Production-ready libraries published on npm

In App Purchase

npm package

A robust NestJS library for server-side transaction validation, streamlining secure payment integration with Apple App Store v2 and Google Play Android Publisher v3.

NestJSIn-AppAppleStoreGoogle

View on NPM

Chat Messenger

npm package

A high-performance WebSocket adapter for NestJS that simplifies real-time communication with built-in media handling and Redis-backed horizontal scaling.

NestJSSocketIOAdapterRedis

View on NPM

Smart Security

npm package

Production-ready security middleware for Express and NestJS that automates critical API protection and hardens infrastructure against common vulnerabilities.

securityAuthenticationExpress

View on NPM

Work

Projects

Things I've built across web, mobile, and backend

Verlora

02/2026 – now

Architected a full-stack e-commerce and booking platform for the Australian market, streamlining salon operations and customer engagement.

NestJSReactTypeScriptPostgreSQL+3

Unios

07/2023 – now

Optimized architectural lighting workflows for a premier Australian manufacturer by building a high-performance GraphQL API and cloud-native backend.

NextJSGraphQLC#AWS Lambda+3

Motoya

10/2024 – now

Developed a secure, real-time C2C marketplace for the Japanese market, facilitating seamless item listings and rapid price evaluations.

NestJSNextJSReactRedis+2

Flamingo

06/2025 – 12/2025

Comprehensive ERP solution for human resource management and revenue analytics, helping organizations monitor and understand their business performance.

NestJSNextJSReactRedis+2

Telegram Mini Apps

06/2024 – 10/2024

Multiple mini apps inside Telegram: Hanagold, Runtogether, Live Trade, Vfilm, Bami, Geek — handling large volumes of traffic with TON blockchain integration.

NodeJSReactRedisMongoDB+1