I build AI software that real businesses run on.
I build AI products that real businesses run on: a dental clinic's whole customer side on LINE and Facebook, a food shop that sells inside chat, a private AI that runs on my own PC, and apps used in a classroom.
AI & Web Developer
PSDC & Paragon Dental Clinics · บริษัท ฟันสวย จำกัด · 3 branches, Rangsit
My first role. I designed, built and run the clinic group's software end to end: the staff dashboard every chat and booking goes through, the public website, online booking and an encrypted data vault.
- Built LINE OA Studio, the dashboard three branches use for LINE + Facebook chats, bookings, patients, shop and ads, with an AI that answers customers first.
- Built and launched psdcdental.com: 36 pre-rendered pages, 3D treatment models, cost estimator, Lighthouse accessibility 100.
- Built an encrypted Data Vault that keeps a versioned copy of all clinic data; it restored the whole system after a database outage.
- Run the Facebook ad side with an AI ad guard that tracks cost per chat and pauses ads that stop paying off.
The three systems I built there
LINE OA Studio
psdcdental.com
Clinic Data VaultThings I've built
Local AI
My own ChatGPT-style app that runs fully on a home PC: chat with several open models, photos, voice, image generation, web search, a knowledge folder and a terminal it can use with my approval.
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InvestMart
One workspace for US and Thai investors: live markets, AI-read news, and "Martin", an assistant that explains stocks in plain language.
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เฮานึ่งตึงลำ AI Ordering
A food shop that sells entirely inside LINE chat: customers order in plain Thai, pay by exact-total PromptPay QR, and the owner gets the order — no staff needed.
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Khanomjeeb POS
The till, stock book and accountant for our dumpling stall — works offline at the market and syncs across phones when back online.
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Shop AI & Growth Office
A local AI for our shop's Facebook page: it collects every post, comment, chat and ad result, finds the best ad audiences, and drafts replies from the shop's own knowledge.
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Catch the Word
A two-player English and maths game played with a webcam: point at the answer bubble and pinch to choose. Used in a real grade-1 classroom.
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Scan Tutor
Photograph a page of English exercises and get every answer explained in Thai — grammar, tips and vocabulary.
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Thai Checkers AI
An analyser for Thai checkers (หมากฮอส): set up any position and see the best move, or review a whole game move by move.
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Meeting Summary Bot
Tag the bot in a LINE group and it turns messy meeting notes into a card: topics, who does what by when, open questions — plus a mind-map image. Paste a Google Drive link and it shows the files as cards.
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JobHub
Search five Thai job boards at once — JobsDB, JobThai, JobBKK, JobTopGun and JobNorthThailand — from one clean page.
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AI Video Studio — Mr Din
A one-person studio that makes Thai news, history, war-map and ghost-story videos with code: script → voice → animated scenes → captions → scheduled on Facebook, TikTok and YouTube.
Read the case study →More projects & open source
Multi-threaded Stockfish 17 in the browser with Elo control.
chess-next-move-gules.vercel.app ↗
Conversational startup mentor with voice and image input.
martin-startup-mentor.vercel.app ↗
Founder. Cookie shop where customers design cookies in 3D; paid orders go into the shop's LINE.
pong.uno ↗
Clickable Google Maps → booking prototype I built to pitch the clinic.
paragon-book-demo.vercel.app ↗Take-home for a developer role: FastAPI + Next.js + Postgres, 44 tests.
github.com/thinandyavin-tech/splitbill ↗Discord AI stock bot: technicals, news summaries, screeners, alerts, daily reports.
github.com/thinandyavin-tech/martin-stocks ↗SMA/RSI strategy engine with backtester, stop-loss / take-profit, dry-run mode.
github.com/thinandyavin-tech/bitcoin-trading-bot ↗Receipt OCR, payments in Google Sheets, reminders and reports on LINE.
github.com/thinandyavin-tech/tax-line-bot ↗TypeScript webhook inbox with HMAC verification, leases and retries.
github.com/thinandyavin-tech/hookledger ↗Dependency-free PromptPay EMVCo payload utilities in Python.
github.com/thinandyavin-tech/thai-payment-toolkit ↗Two AI agents: one audits a website into fix tickets, the other fixes and verifies them.
Demo on requestDesktop typing-speed app (Thai + English) with SQLite stats and charts.
Demo on requestWhat I work with
B.Sc. Digital Innovation (Computer Science) · 2023 – 2026
Let's talk.
Open to developer roles in AI, full-stack and automation.