Hey — I'm Peter, a security researcher / web reverse engineer based in Berlin. I've been building websites, backends, and everything in between since 2020, with niche experience in JavaScript deobfuscation, browser fingerprinting, and passive request fingerprinting.
I'm currently studying computer science at HPI / Uni Potsdam.
I'm often available for freelance work for all things web reverse engineering, antibots and web automation. If that sounds interesting, hit me up at hi@peet.ws.
experience
- 2025-06 — now freelance software development at Browserbase for agent identity, helping agents navigate difficult sites
- 2022-07 — now freelance software development across several projects, some in the sneaker-botting / web-automation space
skills
- Web development (Vue, React, Next.js, Tailwind)
- Full stack (MongoDB, Supabase)
- Backend (Golang, Python, Rust)
- Reverse engineering (Ghidra, various AST tools)
projects
- TrackMe / tls.peet.ws — passive fingerprinting demo, ~2M requests/month; PeetPrint TLS/HTTP2 fingerprint (adopted by rama, used by curl_cffi and httpcloak)
- deob-transformations — JavaScript deobfuscation library
- SWCF — Cloudflare bot-protection reverse-engineering
- Challenger — active fingerprinting demo
writing
more at blog.peet.ws
talks
contact
- email hi@peet.ws
- discord @.peeet