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23 followers · 6 following

Achievements

Achievement: Starstruckx2Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLOAchievement: Pair Extraordinaire

Achievements

Achievement: Starstruckx2Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLOAchievement: Pair Extraordinaire

Highlights

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sqdshguy/README.md

Hi 👋!

I am Oleksandr Herasymov, also known as sqdshguy (pronounced S-Q-dash-guy).

Fullstack engineer. I build web and mobile apps end to end, along with the services, tooling and infrastructure behind them, and I write networking and systems software when the problem calls for it.

🧠 Highlights

  • Author of wreq-js, an HTTP client for Node that reproduces browser TLS and HTTP/2 fingerprints, JA3 and JA4, with a Rust core behind a TypeScript API
  • TensorFlow Certified Developer (verify)
  • 2nd place nationwide at NetOI 2025, the Ukrainian Internet Olympiad in Informatics, plus regional and international IT Olympiad wins
  • Strong algorithms and data structures foundation from competitive programming
  • Research: Detecting Fake News Using Artificial Intelligence (2024), Converting Number Systems Using a Graphical Interface (2023)

More at sqdsh.win.

Pinned Loading

  1. wreq-js wreq-js Public

    HTTP client for Node.js with browser TLS fingerprint impersonation

    TypeScript 378 15

  2. crypto-wallet-tracker crypto-wallet-tracker Public

    Real-time Ethereum wallet activity tracking with Telegram alerts

    TypeScript

  3. ntpfix ntpfix Public

    Windows Time Provider DLL that does NTP from ephemeral source ports instead of port 123, for networks where the ISP blocks source port 123

    C