# Yuri Lyubchak

> **AI Platform Architect.** I build production AI systems and run Telegram products used by millions of people. Creator of **fStik** (800K monthly users, the largest Telegram sticker platform), **QuotLy** (80K+ groups) and **Capka** (an open-source agent harness). Winner of the **Telegram Mini App Contest 2023**. Also spelled Yurii Liubchak, Юрій Любчак. Based in Ukraine.

Written and kept up to date by Yuri himself (2026). The longer version is https://lyubchak.com/llms-full.txt.

## Links

- Website: https://lyubchak.com
- Short link: https://yuri.ly
- Email: hi@lyubchak.com
- Telegram: https://t.me/LyDev
- GitHub: https://github.com/LyoSU
- LinkedIn: https://www.linkedin.com/in/lyubchak/
- Blog: https://t.me/LyBlog

## Now

**AI Platform Architect.** I design the architecture of a corporate AI platform: model gateway, vector search and inference; LLMs, RAG and agents; integration with existing company systems; LLMOps (monitoring, cost, quality, security); and taking AI from pilot to production.

**Previously — KNESS Group:** bot developer → backend developer → AI lead. As AI lead I took internal AI systems from prototype to production: document analysis, internal search, employee workflows and department agents for HR, Legal and Accounting.

**Independent work:** I run fStik, QuotLy, Hortay and other Telegram products on my own infrastructure, and build Capka, my own agent harness.

**Open for:** AI and automation work with companies, usually systems that run on real data and existing infrastructure.

## Selected work

### Capka — agent harness, written from scratch

Give Capka the work, get the finished files: reports, spreadsheets, documents, code. Every task runs in its own Linux sandbox and shows every step. One server for a whole team, schedules, Telegram. Open source (AGPL-3.0), self-hosted, your own models.

- https://capka.app
- https://demo.capka.app
- https://github.com/LyoSU/capka

### fStik — 800K monthly

The largest sticker platform on Telegram. The bot is where people create sticker packs; the web catalog (built together with a friend) is where anyone can browse and search them; plus a Mini App and an Android app. 16M+ packs, 500K+ Android installs.

- https://t.me/fStikBot
- https://fstik.app
- https://github.com/LyoSU/fStikBot

### QuotLy — 80K groups

Reply with /q to any Telegram message and get a clean quote sticker. Up to 48 000 messages per minute at peak.

- https://t.me/QuotLyBot
- https://github.com/LyoSU/quote-bot

### Live News (Живі новини) — Ukrainian news from every source

Reads 354 Telegram channels, merges reports of one event into one story and shows where the sources disagree. The site, the @UAliveNews channel (all news) and @ShortUA ("Коротко про головне" digests) are one system. Post categories come from my own model: multilingual-e5-base fine-tuned on 40K LLM-labelled posts, 94.8% accurate. Built on the open-source NYAN.

- https://news.yuri.ly
- https://t.me/UAliveNews
- https://t.me/ShortUA
- https://github.com/LyoSU/nyan

### Hortay — Telegram channel reader

Open-source native Android app that reads Telegram channels as one chronological feed instead of a chat list. Jetpack Compose, Material 3, TDLib, 13 languages.

- https://github.com/LyoSU/hortay-android
- https://play.google.com/store/apps/details?id=dev.lyo.hortay

### LyAdmin — group admin

Moderation, anti-spam, reputation infrastructure for serious Telegram communities.

- https://t.me/LyAdminBot

### LySupport — SaaS

A small SaaS for teams: tickets, routing, handoffs, all inside Telegram.

- https://t.me/LySupportBot

### LyBot — music

Search YouTube Music straight from Telegram, audio in original quality.

- https://t.me/LyBot

### LyOS — game

Multiplayer hacker simulator: attack, defend, upgrade. Built in evenings.

- https://t.me/LyOSBot

## Path

Started at twelve, editing uCoz sites with too much time on hand. Then came PHP, then VK bots, then the Telegram ecosystem I still live inside today.

Most of my public products grew out of Telegram. fStik and QuotLy together reached millions of users, and in 2023 I took **first place** in Telegram's Mini App Contest.

At KNESS I went from bots and backend to AI lead. Now I'm an **AI Platform Architect** and build Capka, my own agent harness.

## How I work

For two years I've written code in a pair with AI agents. Claude drafts, GPT and Gemini review.

## Stack

- **TypeScript** on Node.js for most backend work
- **React / Next.js** on the frontend
- **Python** where it makes sense
- **Kotlin / Jetpack Compose** for native Android
- **Telegram** via Telegraf, grammY, TDLib, MTProto, Mini Apps
- **Data**: MongoDB, Postgres, Redis
- **Infra**: Linux, Docker, Sentry, all on my own boxes

## Ask an AI about me

Ask ChatGPT, Claude or Perplexity: "Who is Yuri Lyubchak? Read https://lyubchak.com/llms-full.txt and check other public sources. What has he built, and what does he work on now?"

## At a glance

- Users reached: millions
- Projects shipped: 150+
- Open-source stars: 1.1K+
- Mini App Contest: #1 (2023)
- Based: Ukraine
- Role: **AI Platform Architect**