Hieu NguyenPORTFOLIO
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Nguyen Duc Hieu/Software Engineer

Crafting thoughtful solutions
through clean, purposeful code.

Software engineering bridging real-time AI, seamless user experiences, and reliable backend systems.

Explore my workDownload CV
LOADING MODELGLB · THREE.JS
Frontend focus. Full-stack curiosity.↓REACT · NEXT.JS · TYPESCRIPT · NODE.JS · SQL

01 / About

Impactful interfaces. Scalable foundations.

Hieu Nguyen

Software Engineer

Software Engineer specializing in modern frontend ecosystems (React, Next.js, TypeScript), expanding into scalable full-stack development with Node.js. I thrive on building production-ready web apps, architecting maintainable systems, and integrating complex APIs for seamless user experiences.

My next chapter focuses on full-stack engineering: mastering system architecture and API design while keeping user experience at the core.

Where I'm headingSystem architecture & API design

02 / Experience

Built through real work.

07/2025 — 05/2026

Reasonary AI

Onsite · Da Nang

Frontend Developer

Engineering advanced chat interfaces for AI-powered decision advisers.

  • Engineered real-time, low-latency AI chat interfaces utilizing Server-Sent Events (SSE) for seamless streaming responses.
  • Architected highly interactive and responsive UI components using Next.js App Router and Tailwind CSS.
  • Optimized application performance and Core Web Vitals via SSR/ISR; integrated REST/GraphQL with robust global state and error management.
  • Next.js
  • React
  • TypeScript
  • Tailwind CSS
  • SSE

01/2024 — 06/2025

Freelance

Remote · International clients

Frontend Developer

Building resilient platforms for healthcare and communication systems.

  • Designed and implemented comprehensive management dashboards for mission-critical healthcare communication systems.
  • Spearheaded the development of web-based faxing, secure patient messaging, and detailed communication history features.
  • Diagnosed and resolved complex UI, layout, and state-management bottlenecks, significantly elevating system stability and UX.
  • Ember.js
  • TypeScript
  • SIP.js / WebRTC
  • Ruby
  • REST APIs

03 / Expertise

A connected set of capabilities.

Interface craft

  • React
  • Next.js
  • Ember.js
  • TypeScript
  • JavaScript ES6
  • Tailwind CSS
  • HTML5 / CSS3

Backend engineering

  • Node.js
  • Express.js
  • RESTful API Development
  • Authentication & Authorization
  • JWT
  • Middleware
  • Error Handling

Database & Modeling

  • PostgreSQL
  • MongoDB
  • SQL
  • Database Design

Web & Communication

  • REST APIs
  • GraphQL
  • Server-Sent Events (SSE)
  • WebRTC

Development workflow

  • Git
  • GitHub
  • Jira
  • OpenCode
  • Codex
  • Figma
  • Postman
  • bash

AI Coding

  • Loop Engineering
  • Harness Engineering
  • Context Engineering
  • Agentic Workflows

04 / Work

From complexity to clarity.

Selected contributions from my professional experience.

2025 — 2026

Reasonary AI

Elevating AI conversational experiences.

Delivering fluid streaming responses, highly responsive interfaces, and meticulous state management for a modern AI adviser platform.

  • Next.js
  • TypeScript
  • SSE

Explore my contribution

  • Engineered real-time, low-latency AI chat interfaces utilizing Server-Sent Events (SSE) for seamless streaming responses.
  • Architected highly interactive and responsive UI components using Next.js App Router and Tailwind CSS.
  • Optimized application performance and Core Web Vitals via SSR/ISR; integrated REST/GraphQL with robust global state and error management.
Elevating AI conversational experiences.

2024 — 2025

Private

Freelance

Connecting modern healthcare.

Robust dashboard solutions combining secure patient messaging, web-based fax, and extensive communication history into a unified browser experience.

  • Ember.js
  • TypeScript
  • WebRTC

Explore my contribution

  • Designed and implemented comprehensive management dashboards for mission-critical healthcare communication systems.
  • Spearheaded the development of web-based faxing, secure patient messaging, and detailed communication history features.
  • Diagnosed and resolved complex UI, layout, and state-management bottlenecks, significantly elevating system stability and UX.
Connecting modern healthcare.

05 / Education & recognition

Always building on what I know.

2021 — 2026

Bachelor of Software Engineering

Vietnam–Korea University of Information and Communication Technology (VKU), The University of Da Nang

GPA 3.21 / 4
2026

TOEIC Reading & Listening · 745

IIG Vietnam

2023

English Communication Certificate

Code Engine Studio

2022

3rd prize · Best Web Design Competition

VKU

06 / Contact

Let's build something exceptional.

Have a complex engineering challenge or an exciting opportunity in mind? Let's connect.

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