velyn

I build whatever I find interesting.

velyn’s avatar: a white-haired anime angel with a halo and small wings

I’m velyn, a developer based in Germany.

I write native Windows software and have experience in reverse engineering, so I’m comfortable working close to the system and figuring out how other programs work.

On the web, I build websites, user panels and XenForo add-ons for things like accounts and marketplaces, and I run my own sites too.

I’ve also done GTA multiplayer development and written browser extensions and Discord bots, so I don’t stick to one area. If something catches my interest, I start building.

Languages
C++, C, C#, JavaScript, TypeScript, PHP, Python, Lua
Stack
Node.js, discord.js, XenForo, MongoDB, MySQL, Astro, Tailwind CSS, Cloudflare
Tools
Visual Studio, VS Code, IDA Pro, x64dbg, ReClass.NET

Projects

Here’s some of my work. Most of it is open source, so you can read the code too.

  1. Discord bot

    Vector Tracker

    Tracks CS2 matches, Premier rating, Steam bans and inventories for Discord servers.

    A server picks the Steam accounts to follow, and the bot posts their match results, rating changes, new bans and inventory changes there. /stats looks up CS2 stats and medals for a Steam account. It runs in 412 servers with about 27,000 users (November 2026).

    • JavaScript
    • discord.js v14
    • MongoDB
    • CS2 Game Coordinator
  2. Windows app

    Steam Tracer Cleaner

    Cleans up after Steam and backs up everything before it deletes.

    Removes the saved logins, sentry files, caches and registry keys Steam leaves behind. A dry run shows every change first.

    • C++
    • Dear ImGui
    • SQLite
    • Windows 10 and 11
  3. Windows app

    Steam Account Manager

    Manages many Steam accounts from one encrypted vault.

    Handles Steam Guard codes, mobile confirmations, trade offers and one-click login for every account. Secrets stay on your PC, encrypted with your master password.

    • C++
    • Dear ImGui
    • mbedTLS
    • Windows 10 and 11
  4. Browser extension

    Steam Banned Friends Manager

    Flags banned Steam friends and lets you remove them in bulk.

    Labels VAC, game, community and trade bans on your friends list and on Steam group member pages.

    • TypeScript
    • WXT
    • Steam Web API
    • Chrome and Firefox
  5. Python script

    Discord Always Online Idler

    Keeps up to five Discord accounts showing as online.

    Holds a WebSocket heartbeat to the Discord gateway for each account and resumes the session after a drop. It needs no Discord library.

    • Python 3.9+
    • asyncio
    • websockets
    • PM2
  6. Bot template

    Discord.js v14 Bot Base

    Wires up command, event and component handlers for you.

    Drop a slash command, button, select menu or modal into its folder and the loader picks it up on boot. MongoDB is optional.

    • JavaScript
    • Node.js 18+
    • discord.js v14
    • Mongoose
  7. Browser extension Archived

    VACNet Labeling Plus

    Added quality-of-life fixes to Valve’s CS2 VACNet labeling portal.

    Let reviewers seek through the whole replay instead of a twelve-second window and kept a searchable history of every clip they labeled. I archived it once it was no longer needed.

    • TypeScript
    • WXT
    • Manifest V3
    • Chrome and Firefox

Message me

Add me on Discord or send me an email.

velyn