Ivan

IVAN DVORETSKYI
BACKEND DEVELOPER

PROFILE

Backend developer (Python / Node.js / TypeScript) focused on real-time, event-driven systems, automation, and
Web3 payment integrations. I build reliable async services and monitoring tools that handle live market and
transaction data, with strong attention to idempotency and transaction safety. Telegram bots I have personally built
serve roughly 50,000 users. Comfortable owning a project end-to-end — code at github.com/dvoretskiyy.

C O N TA C T EXPERIENCE

PHONE Software Assistant — Automation 2025 – 2026
[open contact info](look above in the "contact info" section) RTB Systems
• Supported the team by automating recurring processes and internal workflows, reducing manual effort on routine
EMAIL
tasks.
[open contact info](look above in the "contact info" section)
• Built and maintained Python automation scripts integrating external APIs and data pipelines [add specific system /
LOCATION metric].
Košice, Slovakia
• Collaborated within an established engineering team, shipping changes against production systems.
GITHUB
github.com/dvoretskiyy Founder & Solo Developer — "Snaky" (Telegram Mini App) Jan 2026 – present
Personal Product
LINKEDIN
[open contact info](look above in the "contact info" section) • Designing and building a real-time Telegram mini-game with TON cryptocurrency monetization, owning backend,
frontend, and infrastructure.
• Implemented HTML5 Canvas game rendering and real-time game state with a focus on balance tracking and
E D U C AT I O N transaction safety for in-game payments.
• Architected the payment/reward flow with idempotency to guarantee safe, repeatable crypto transactions.
BSc Informatics
Technical University of Košice (TUKE) Freelance Automation & Bot Developer 2023 – 2025
2025 – present Self-employed
• Delivered automation projects for multiple clients, building async services for monitoring, scraping, and event-based
BSc Cybersecurity
triggers.
State University of Telecommunications (online)
2024 – present • Developed a wide range of Telegram bots — online stores, navigation bots, and gift-purchasing bots — serving
~50,000 users in total.
• Worked with external APIs, authentication, payment flows, and PostgreSQL-backed data processing.
KEY STRENGTHS

▸ Event-driven architecture
TECHNICAL SKILLS
▸ Real-time systems (WebSocket, multiplayer)
Languages: Python, TypeScript, JavaScript, C++, C, SQL
▸ Financial logic (idempotency, balance & transaction Backend: FastAPI, Flask, asyncio, aiohttp, Node.js, Express.js, Socket.IO, WebSocket, REST API
safety)
Frontend: React (18/19), Vite, Canvas API, Socket.IO Client
▸ API reverse engineering
Databases: PostgreSQL, MySQL, SQLite, Redis
▸ Trading / market logic
DevOps: Linux, Docker, Docker Compose, Git, VPS, CI/CD
Other: JWT auth, web scraping (BeautifulSoup, Selenium), binary protocols (Buffer, bitwise ops), Web3 / TON,
LANGUAGES blockchain integrations

Ukrainian Native
Russian Native
English B2
Slovenčina A2