Oleg B.

I build and fix Unity and Unreal Engine games — especially multiplayer — and VR/AR apps for Meta Quest, Apple Vision Pro, iOS, Android and the web. If your game has desync, disconnects or performance problems, or you need a prototype turned into something you can ship, that's the work I do best. I'm technical lead at ServReality, so a full team (developers, 3D artists, QA) is available when a project needs more hands, and you keep a single point of contact: me. 🎮 𝐖𝐡𝐚𝐭 𝐈 𝐰𝐨𝐫𝐤 𝐨𝐧 • Multiplayer — Photon (PUN, Fusion), Mirror, Netcode for GameObjects: matchmaking, lobbies, reconnect logic, lag compensation, authoritative servers • Unity — gameplay systems, mobile optimization, in-app purchases and ads, Firebase, porting and upgrades • Unreal Engine 5 — C++ and Blueprints, UE4 → UE5 migration, vehicles, FPS/TPS, simulations • VR & spatial computing — Meta Quest 2/3, Apple Vision Pro (visionOS), SteamVR/PC VR, OpenXR, XR Interaction Toolkit: locomotion, hand tracking, physics interactions, training simulators • WebXR — VR/AR experiences that run in the browser, no app install needed • AR — ARKit, ARCore, AR Foundation: image tracking, surface detection, AR games and education apps 🏆 𝐑𝐞𝐜𝐞𝐧𝐭 𝐰𝐨𝐫𝐤 • Unity + Photon PvP and co-op games — fixed matchmaking, disconnect/reconnect and timeout handling (5-star reviews, 2025 and 2026) • UE5 multiplayer game with vehicles, FPS and TPS modes — 343 hours • Unreal Engine virtual event platform — 636 hours, 5-star review • Unreal C++ traffic simulation system • VR game for Meta Quest 2/3, VR employee training simulator, VR car configurator • Apple Vision Pro: a VR rhythm game released at the headset's launch, a smart home control app (HomeKit), and the visionOS version of a 4.5★ budget planner • WebXR property tour — walk through a building in VR straight from a link, on Meta Quest or a phone, no app install (Three.js + WebXR) • AR educational apps and an AR storybook for kids 🤝 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤 Hourly or fixed-price milestones. Playable builds every week, so you always see real progress. Joining an existing project? I start with a short code and performance review, so you know what you have before anything changes. Send me your build, repo or design doc. I'll reply with how I'd approach it and a realistic estimate.