// Freelance software engineer
Wongsaphat
Puangsorn
I build production web apps end to end — scope, UI, API, database and deploy — as the one engineer who owns all of it. Remote from Thailand, hired through Fastwork.
Open for remote freelance web app projects alongside my full-time role as CTO at RS Trophy — hire me through Fastwork
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About
Who you would be hiring.
Enthusiastic and dedicated technologist focused on transforming business requirements into clean, sustainable code. As CTO, I own every technology decision end-to-end — from technical strategy to single-handedly shipping software, infrastructure, and automation across the business. I am passionate about high-performance systems and modern infrastructure, and I freelance remotely as a software engineer building web apps alongside my full-time role.
- Own end-to-end technology decisions, from strategy to shipped code
- Focused on building robust, high-performance systems
- Committed to clean and sustainable architecture principles
- Remote freelance software engineer for web app projects, alongside my full-time role
// Profile
- Based in
- Pak Kret District, Nonthaburi, Thailand
- Time zone
- ICT · UTC+7
- Works
- Remote
- Languages
- Thai · English
What I build
Freelance work I take on — each with shipped proof.
Web apps & MVPs
A full-stack web app taken from idea to production — scoping, UI, API, database, auth and deploy, built by one engineer who owns all of it.
// Proof
Open “รับทำเว็บแอปและระบบจัดการหลังบ้าน Next.js + TypeScript พร้อม Deploy ใช้งานจริง”
Dashboards & internal tools
Admin consoles, data dashboards and role-based back-offices — maps, charts, CSV export and the permissions that keep each person on the right screen.
// Proof
Open “รับทำระบบหลังบ้าน + Dashboard จาก Excel/Google Sheets ที่ใช้อยู่ — ทั้งทีมใช้ได้ผ่านเว็บ”
Company & landing sites
Fast company and landing sites that render without JavaScript, index cleanly in search, and stay easy for your team to update.
// Proof
Related “เปลี่ยนเว็บ WordPress/WooCommerce เป็นเว็บแคตตาล็อกสินค้าเขียนเอง เร็วกว่าเดิม ลิงก์เดิมไม่เสีย”
Deploy, infra & speed-ups
Docker and Railway deploys, build gates that stop a broken release, and fixes for apps that are slow or eat memory in production.
// Proof
- 402 MB to 126 MB: what was actually in my Next.js container
- Build with Bun, serve with Node: dodging a standalone RSS leak
Open “รับ Deploy เว็บขึ้น Server — Docker, VPS, โดเมน, SSL พร้อมลดค่าเซิร์ฟเวอร์”
or “รับแก้บั๊ก กู้เว็บพัง และจูนเว็บช้าให้เร็วขึ้น วัดผลด้วย PageSpeed ก่อน–หลัง”
AI coaching (1:1)
One-to-one sessions for business owners: you leave with AI doing a real, repeated task in your own business, taught from systems running in production at a factory.
// Proof
Open “ที่ปรึกษา AI สำหรับเจ้าของธุรกิจ สอน 1:1 ให้ AI ทำงานซ้ำแทนคุณ จากระบบที่ใช้จริงในโรงงาน”
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Selected work
Shipped builds — the proof behind the services above.
Career
Current role and recent history.
Stack
Core tools in active rotation.
Journal
40 entries — the engineering journey, written up with the numbers.
Hire me
Remote freelance web app projects, scoped and shipped end to end.
// Open for freelance
Got a web app to build?
One engineer accountable for all of it — from the first message to the deploy. Here is how a project starts.
- 01
Chat on Fastwork
Tell me what you need. Asking costs nothing and commits you to nothing.
- 02
Agree on scope
I reply with the scope, a timeline and a quote you accept on Fastwork.
- 03
Build & ship
Payment runs through Fastwork. I build, deploy and hand it over.
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