Ruslan Zabauski

B.Eng. Biomedical Engineering / Software Engineer

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Poland

Ruslan Zabauski

Poland · ruslan.zabauski@proton.me · t.me/zabauski · github.com/Zabauski

Education

BSc Biomedical Engineering — University of Poznań

2026

Experience

Software Engineer

3 yrs

Websites, mini-apps, Telegram bots, mobile apps — commercial & personal.

Lead Technical Typesetter

LaTeX · 5 yrs

Ghostwriter

MedTech / AI content · healthtech brand

AI / ML

Courses · Anthropic & Google

Stack

Linux · Docker · React · Python · JavaScript · Kotlin

Universal stack — frontend, backend, infra

Languages

English · Polish · Russian · Belarusian

Folio Capital

Telegram Mini App · @foliocapitalbot

What it is

Multi-asset net worth & cashflow cockpit inside Telegram — crypto, equities, fiat, and custom assets with sub-cent precision. No floating-point errors, ever.

Highlights

Fixed-point money math — decimal.js, numeric(18,8)
Live quotes — Binance · CoinGecko · Yahoo · ECB, circuit-breaker cached in Redis
Gesture carousel UI — Framer Motion, native haptics, zero URL routing
HMAC-SHA256 Telegram auth, stateless JWT
2-container Docker Compose — self-hosted

Stack

React 18 · TypeScript · Vite · Fastify · Node 22 · PostgreSQL 16 · Drizzle · Redis · BullMQ · Docker

SkyCross Bot

Commercial Telegram CRM · private project · skycross.by

What it is

Production automation bot for a footwear & leather restoration workshop — lead generation, cost estimation, and customer support, running live with daily paying customers.

Highlights

4-step cost-estimation quiz with multi-photo damage diagnostics
Zero-cost CRM — managers reply natively inside Telegram Forum Topics
Single-message UI — in-place editing, no chat spam
In-app CMS — price overrides & promos, no redeploys
Docker on the client's VPS — deployed & hosted by me, 24/7 uptime

Stack

Python 3.12 · aiogram 3 · SQLite · Docker