Nguyễn Hữu Trung

Product

Two SaaS products: a B2B networking & CRM platform (web, mobile app, backend) and an e-commerce operations platform integrated with Shopee.

• Lead developer in a small team, owning most of the product: backend, database, integrations, deployment and production support.
• Built REST APIs in Node.js/TypeScript for a Next.js web app and a Flutter app (live on the App Store and Google Play), both using the same API.
• Designed the PostgreSQL database on Supabase: schema, migrations, JWT sign-in and permissions so each user only sees their own data.
• Realtime chat over WebSocket written in Go, with push notifications; Stripe payments via webhooks and Apple/Google in-app purchase reconciliation.
• An agentic AI assistant in the app (OpenAI, Claude) with 13 tools working on the user’s data under the app’s own permissions; an MCP server so outside agents can connect.
• E-commerce platform: Shopee integration (orders, stock, ads, reports), a Next.js admin console, and the Node.js backend upgraded to Go step by step without downtime.
• Packaged services with Docker, CI/CD on GitLab CI and GitHub Actions, deployed to Linux servers with separate staging and production.

• TypeScript
• Node.js
• Next.js
• React
• PostgreSQL
• Supabase
• Redis
• Go
• Flutter
• Docker
• GitLab CI
• Stripe
• OpenAI & Claude API

Product

Built and ran web products and automation tools; led and supported both frontend and backend work, and optimised code for speed and stable performance.

• Built full-stack features with Next.js on the frontend and NestJS on the backend, integrating several databases and third-party services.
• Wrote some APIs in Python/FastAPI for data processing; Redis for caching, Docker for deployment.
• Integrated ChatGPT into the product and built automation tools for the operations team.
• Optimised code and queries so the system ran faster and more reliably.

• TypeScript
• Next.js
• NestJS
• Redis
• Docker
• ChatGPT API

Outsource

Maintained and extended client project systems, designed APIs, reviewed code and gave technical guidance — notably two social networking apps, Fansome and Tingle.

• Maintained and extended the project systems; took in and resolved requests from related project units and supported them when needed.
• Took part in ideation, technical design, implementation and testing of features; designed APIs between client applications and backend services on scalable architecture principles.
• Reviewed code and gave technical guidance to 1–2 junior developers.
• Fansome — social networking app (9 months): owned the backend end to end with NestJS and PostgreSQL — database analysis and design, RESTful API design, deploying the server to a Linux VPS with Docker, and fixing issues reported by testers.
• Tingle — social networking app (3 months): Kotlin backend on Spring Boot with Firebase — database and RESTful API design, VPS deployment, unit tests, new features on customer request and ongoing maintenance.

• Node.js
• NestJS
• TypeScript
• PostgreSQL
• Firebase
• Docker
• Linux

Product

Client-facing web interfaces in React and TypeScript — concurrent with the final year of university, adding frontend to earlier backend work.

• Built and shipped client-facing web interfaces in React and TypeScript, turning Figma designs into responsive, cross-browser UI.
• Developed a reusable component library — forms, tables, modals, filters — that kept styling and behaviour consistent across client projects and cut setup time on each new one.
• Managed application state with Redux / React Context and integrated REST APIs, handling loading, error and empty states as first-class cases rather than afterthoughts.
• Implemented client-side form validation and authenticated routing, and improved page performance through code-splitting, lazy loading and image optimization.
• Worked directly with backend developers and designers on short delivery cycles and took part in code review — the groundwork for later moving into fullstack ownership.

• React
• TypeScript
• JavaScript
• Redux
• HTML/CSS
• REST APIs
• Git

Product

A platform connecting science and engineering businesses with experts; took part in system analysis and design and built the backend.

• Took part in system analysis and design, designed the PostgreSQL database and built GraphQL (Apollo) APIs in Node.js / TypeScript, with Redis for caching.
• Deployed the server behind AWS Elastic Load Balancing with a Git-based CI/CD pipeline.
• Fixed issues reported by testers, troubleshot and refactored the existing codebase for better performance.

• Node.js
• TypeScript
• GraphQL
• Apollo
• PostgreSQL
• Redis
• Firebase
• AWS
• CI/CD