Portfolio — MMXXVIThanh Xuan, Ha NoiOpen to opportunities

Fullstackdeveloper

Currently

Junior Full-Stack Developer
at Pionero JSC

Also running

Seawin Tech
independent web studio

I build production web products with Next.js and NestJS — and I stay with them through deployment, debugging, and the parts that only break at 2am on real infrastructure.

Years shipping
2+
Products delivered
10
Production infra
AWS
01About

What I focus on

I enjoy building end-to-end products that are clean, scalable, and maintainable. Most of my work is shipping features, wiring frontend to backend, and supporting production deployment on AWS.

  1. 01

    Ship it, then own it

    Writing the feature is half the job. I stay through deploy, logs, and the incident that shows up a week later.

  2. 02

    One system, not many

    Reusable primitives and consistent conventions beat clever one-offs. New requirements should cost less over time, not more.

  3. 03

    Boring infrastructure

    I reach for the well-understood AWS building blocks first. Interesting architecture is a cost, not a feature.

Education

Hanoi University of Science and Technology

B.Sc. Computer Science (IT1)

2021 — 2025

Certification

TOEIC 780

2025

Based in

Thanh Xuan, Ha Noi

Vietnam

02Experience

Where I've worked

  1. Aug 2025 — Present· Now

    Junior Full-Stack Developer

    Pionero JSC

    • Worked across multiple products using Next.js and NestJS.
    • Built real-time UI for speech-to-text features.
    • Developed responsive product pages and internal tools.
    • Supported deployment and operations on AWS.
    • Worked with ECS, ECR, EC2, ALB, RDS, S3, CloudFront, API Gateway, SQS, SNS, and SendGrid.
  2. Sep 2024 — Jul 2025

    Intern

    Pionero JSC

    • Contributed to web projects with Next.js.
    • Improved backend understanding and learned AWS deployment basics.
    • Built features for a Japanese learning platform using Next.js and NestJS.
03Selected work

Two kinds of work

Product engineering at a company, and client sites I design, build, and deploy myself. Different constraints, same standards.

Product engineering at Pionero JSC — client-facing platforms and internal tools, most of them running on AWS.

    • Built the streaming transcript UI and kept updates stable under a continuous socket feed.
    • Handled reconnection and out-of-order chunks so the transcript never visibly jumped.
    • Integrated with backend inference services hosted on Azure.
    • Next.js
    • TypeScript
    • WebSocket
    • Azure
    Internal product — not publicly linkable
04Stack

What I build with

Frontend
  • Next.js
  • React
  • TypeScript
  • Tailwind CSS
  • Framer Motion
Backend
  • NestJS
  • REST API
  • WebSocket
  • Strapi
Cloud & DevOps
  • AWS
  • ECS / ECR
  • EC2
  • ALB
  • RDS
  • S3
  • CloudFront
  • API Gateway
  • SQS / SNS
  • Docker
  • CI/CD
  • Vercel
Data & tooling
  • PostgreSQL
  • MySQL
  • Git
  • SendGrid
05Contact

Let’s build
something.

Open to full-time fullstack roles, and available for freelance web projects through Seawin Tech. Fastest way to reach me is email.