Senior Full-Stack Engineer · UTC+8
I build reliable browser automation, web scraping and browser extensions, enhanced with AI.
12+ years in software engineering, most of that time turning messy, protected web sources into clean, structured data you can trust. If a site needs a real browser, login flows or anti-bot handling, that is exactly my kind of work.
- 5,000,000+ products scraped daily at peak, across 1,000+ sites
- 50+ browser extensions shipped since Manifest V2 days: Chrome, Firefox, Edge, Safari, iOS/Android WebView
- 30,000+ users on a coupon auto-apply extension I architected and built from scratch, leading a team of 3 (4.8/5 rating)
- an 8-minute verification flow rebuilt into 60-75 seconds at 99%+ reliability
{
"name": "Mikhail Koviazin",
"focus": ["browser automation", "web scraping", "browser extensions", "AI integration"],
"specialties": {
"anti_bot": ["IP rotation", "proxy management", "browser fingerprinting", "CAPTCHA solving"],
"extensions": ["Manifest V2/V3", "Chrome / Firefox / Safari / Edge", "iOS + Android WebView", "Web Store publishing"],
"automation": ["Puppeteer", "Playwright", "Cheerio", "Apify SDK"],
"ai": ["Claude API", "OpenAI", "agent workflows", "LLM + deterministic validation"]
},
"education": "MSc Software Engineering, Harbin Institute of Technology",
"languages": ["English (C1)", "Chinese (B1)", "Spanish (A2)", "Russian (native)"]
}AI is a big lever in my recent work, and I use it with discipline. LLM extraction plus deterministic validation for sources too inconsistent for fixed parsers; agent workflows that combine browser automation with LLM analysis. Costs stay under control because AI works hardest at development time, so the production path stays fast and cheap at volume.
Most of my work is client work, so it lives in private repos. Some of it is public anyway: FatCoupon (coupon auto-apply at checkout), Saleo Demo Sync (real-time demo personalization, a feature I built from scratch inside the Saleo extension), 1Blocker (Safari ad blocking on macOS and iOS, on an adapted uBlock engine).
