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$ ls ./stack/

Tech Stack

Frontend

  • HTML5
  • CSS3
  • JavaScript
  • TypeScript
  • React
  • Next.js
  • Tailwind

Backend & Deployment

  • Node.js
  • Express
  • NestJS
  • Vercel
  • Render

Database

  • PostgreSQL
  • Supabase
  • TimescaleDB
  • Firebase

AI / ML

  • Python
  • TensorFlow
  • PyTorch
  • scikit-learn
  • NumPy

IoT & Automation

  • Arduino
  • C
  • MQTT
  • NETPIE
  • Node-RED
  • Blynk IoT
  • Ignition Designer

Cloud & DevOps

  • Git
  • GitHub
  • Docker
  • GCP
  • Apps Script

Tools & Utilities

  • VS Code
  • Postman
  • Figma
  • LINE API
$ curl ${API}/api/v1/playground/...

Live API Playground

Pick an endpoint, fire it at the live NestJS service on Render, and see the real response. Rate-limited to 10 calls per minute per IP.

GET /api/v1/playground/echo?msg=hello
$ tail -f /var/log/portfolio.log

Who else is here right now

Real-time presence via Supabase Realtime (Postgres logical replication). Drop a wave — other open tabs see it within ~2 seconds. Falls back to 5s polling if the realtime channel drops.

👀 — visitors online○ connecting…

Activity feed

No activity yet — be the first to react.

We store a random session ID (you can clear localStorage), your country (from the request header), the path you're on, and a timestamp. We do not store your IP address.

$ cat ./projects/featured.md

Featured Projects

$ git log --pretty=oneline ./career/

Experience

  1. Present

    Full-Stack Developer (Freelance) · Self / various clients

    • TypeScript/React/Tailwind web apps
    • Receipt-scanning demo in progress

  2. Jan – Feb 2026

    Full-Stack Developer · Blazeworks3D (freelance)

    • STL viewer + pricing engine + membership + orders, owned end-to-end
    • UX/UI and database design

  3. Jul – Dec 2025

    IoT Engineer & AI · Absolute Clean Energy

    • LINE messaging bot for automated daily reports
    • Node-RED IoT monitoring on factory hardware
    • AI risk-analysis prototype

  4. 2022 – 2024

    AI Developer (senior project) · Naresuan University

    • CNN-based Thai-song genre classifier across 7 genres
    • Google Cloud Speech-to-Text integration for lyrics moderation

  5. Apr – Jun 2022

    IoT Developer · NETPIE Smart Plug Internship

    • NodeMCU firmware + MQTT broker + Blynk control surface
$ cat ./education.yaml

Education

2019 – 2024

Bachelor of Engineering — Computer Engineering

Naresuan University

Relevant coursework

  • Software Development
  • Computer Architecture
  • Embedded Systems
  • IoT
  • Computer Networks

Activities

  • CARLA Autonomous Driving Challenge 2022
  • Lecturer — NUDS STEM Robotics Camp
  • Administration — NU Robot
$ cat ./about.md

About

Computer Engineer from Naresuan University with hands-on experience building Full-Stack web apps (TypeScript / React / NestJS), regular IoT and industrial IIoT systems for factories (Node-RED / MQTT / Arduino / ESP32), and AI/ML/DL pipelines (TensorFlow / PyTorch). Currently freelancing and looking for a full-time Junior Full-Stack, IoT Engineer, or AI Engineer position.

$ mail -s "hello" hatthasit.hihine@gmail.com

Let's talk

Open to junior full-stack roles. Reach me by email or phone.

Phitsanulok, Thailand