Roman Bilak

At YellowStone (part of EVOPlay), I contribute to the core of a high-load, multi-site platform, developing backend features and supporting production reliability. I also work on performance improvements and join architecture and database design discussions. From April 2022 to January 2026, I led a backend team of 3 and coordinated 5 cross-functional specialists on ggbet.co.uk. I handled hiring, onboarding, technical planning, releases, and production support, and led Docker migration and CI/CD implementation. Earlier, at TourHunter.com, I supported a tourism SaaS platform through backend feature development, REST APIs, performance optimization, and early-stage unit testing. Across my work, I reduced database storage from 190 GB to 110 GB and infrastructure costs by approximately $1,000–1,500 per month.