# Trung Thanh Tran (Trần Trung Thành) — Python & Automation Developer

> IT student at Industrial University of Ho Chi Minh City (IUH) and, since May 2026, developer at Madalena (a cosmetics retailer), where he built the customer loyalty app (React Native / Expo, on Google Play) and its PHP REST API on his own. Takes part-time, fixed-scope freelance work (UTC+7): web data extraction, APIs, n8n / Make workflows and small AI features.

## Facts
- Location: Ho Chi Minh City, Vietnam (UTC+7). Works part-time; contact through Upwork or email.
- Upwork: 1 completed job (Oct 2026, 5.0 review).
- Apify Store: 5 public Actors, pay per event from $2.00 per 1,000 results. They are new: a few runs each and no paying users yet. A sixth listing (TheFork) is a demo that returns fixed sample data and is being retired.
- RapidAPI: 2 freemium API listings that call the Apify Actors. Gumroad: 2 products (one free, one $14.99).
- Skills: Python (httpx, Playwright, FastAPI, Pydantic), TypeScript / JavaScript, PHP, SQL, React, React Native (Expo), n8n, Make, Google Apps Script, OpenAI and Claude APIs.

## Links
- Portfolio: https://trungthanhtran.vercel.app
- CV: https://trungthanhtran.vercel.app/cv
- All links on one page: https://trungthanhtran.vercel.app/links
- GitHub: https://github.com/Tthanh2k6
- Apify Store: https://apify.com/thanh81646
- Upwork: https://www.upwork.com/freelancers/trungthanhtrandev
- dev.to: https://dev.to/tthanh2k6

## Apify Actors (each README lists its limits)
- [B2B Website Email, Phone, Social Links & Tech Stack Scraper](https://apify.com/thanh81646/apify-b2b-lead-and-contact-enricher): fetches a company homepage and up to two contact/about pages without a browser; returns emails as found on the page (not verified), phone-like strings, social links, JSON-LD types and a tech-stack guess.
- [Shopify & WooCommerce Product Price, Stock & JSON-LD Monitor](https://apify.com/thanh81646/apify-ecommerce-price-and-stock-monitor): reads product name, price, currency, availability and SKU from JSON-LD or common HTML product cards. First offer only, no per-variant data, no history between runs.
- [US Healthcare Clinic Contact, Schema & Chain Detector](https://apify.com/thanh81646/apify-us-healthcare-clinic-contact-enricher): contacts from US clinic websites, a DNS/MX check on email domains (not a mailbox check), and a keyword heuristic that guesses chain vs independent.
- [Malaysia KPKT TEDUH Property Developers & Housing Projects](https://apify.com/thanh81646/malaysia-kpkt-teduh-property-developer-scraper): flattens the public KPKT TEDUH JSON API into developer-project rows; returns two built-in sample rows if the API cannot be reached.
- [Multi-Stop Route, Geocoder & 2-Opt Distance Optimizer](https://apify.com/thanh81646/apify-multi-stop-route-and-distance-optimizer): OpenStreetMap Nominatim geocoding, nearest-neighbour + 2-opt ordering on straight-line distance times a road factor, and a Google Maps link. Addresses that cannot be geocoded get a synthetic point marked `fallback_centroid`.

## Other public work
- [vn-sme-offline-tools](https://tthanh2k6.github.io/vn-sme-offline-tools/): nine single-file browser tools for Vietnamese small businesses (VietQR cashier, receivables, quotes, fleet fuel checks, e-invoice XML...). Built as templates with placeholder sample data.
- Open-source integration and toolkit repositories on GitHub with pytest suites; not yet used by paying clients.
- Personal projects: QR attendance PWA (Google Apps Script), Android apps in Kotlin, Chrome extensions (Manifest V3), an AI game lab (TypeScript).