Ростислав

Rostyslav Betsyshen
Backend Developer | Go & Node.js | Real-Time Systems
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | github.com/tokyobladee | Lviv, Ukraine

PROFESSIONAL SUMMARY
Backend Developer with 1.5+ years of experience building and maintaining production services in Go and Node.js.
Owns backend delivery from architecture and implementation through deployment and ongoing support, with a
focus on real-time systems, maintainable code, and client-server integration.

WORK EXPERIENCE
Evolute Studio
Backend Developer Aug 2024 - Mar 2026
- Owned backend architecture, development, and ongoing production maintenance as the sole backend
developer for a real-time multiplayer game.
- Rewrote the entire multiplayer backend from Node.js to Go to simplify ongoing maintenance.
- Developed and maintained real-time services for matchmaking, player sessions, and game-state
synchronization, supporting approximately 100 concurrent players in production.
- Designed and maintained REST APIs with token-based authentication for player data and server-side game
operations.
- Designed PostgreSQL schemas and production migrations for player, session, and match data.
- Containerized and deployed backend services with Docker, maintaining production environments and
supporting ongoing updates.
Unity Developer Feb 2023 - Mar 2026
- Developed mobile games across three Unity projects, including two released titles, with responsibility for
gameplay, UI, and multiplayer functionality. Combined Unity and backend responsibilities from Aug 2024.

AI-ASSISTED DEVELOPMENT
Built a structured AI-assisted development workflow using Codex, Claude Code, and Gemini, with reusable and
project-specific skills to accelerate implementation, support code analysis, and streamline technical research.

SKILLS
- Backend: Go, Node.js, JavaScript, WebSockets, REST APIs, Token-Based Authentication
- Database & DevOps: PostgreSQL, Docker, DigitalOcean, Vercel, Git, CI/CD
- Additional Technologies: Python, Flask, Java, TypeScript, Unity, C#
- Languages: English (B2), Ukrainian (Native), Russian (Native)

TEAM AWARDS
- Best Mobile Game - DevGAMM Vilnius 2023, Gravitation.io (Evolute Studio)
- Winner - Mammothon 2025 by Celestia, Evolute Kingdom: Mage Duel (Evolute Studio)

EDUCATION
Bachelor's Degree in Economics Sep 2022 - Jul 2026
National Academy of Statistics, Accounting and Audit
Completed 3.5 years of Computer Science coursework.