Rostislav K.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Hi, I’m Rostyslav Kulahin, a Senior Unity Developer with 4+ years of experience in mobile game development. I have worked on 100+ projects, contributing to games that have collectively surpassed 20 million downloads. I specialize in: ✅ Full-Cycle Game Development – From concept to launch ✅ Unity & C# – Clean, efficient, and scalable code ✅ Mobile Optimization – Ensuring smooth performance on iOS & Android ✅ Firebase Integration – Analytics, authentication, and cloud solutions ✅ Multiplayer & Networking – Real-time and turn-based gameplay ✅ Monetization & Ads – Implementing IAPs, AdMob, and mediation I thrive on creating engaging and high-quality games that stand out in the market. Whether you need a new game from scratch, improvements to an existing project, or bug fixes and optimizations, I’m here to help. 💬 Let’s discuss your project and bring your ideas to life!