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Hleb Rahoisha
Senior Unity/C# Developer specializing in mobile and VR games
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About
Unity gameplay engineer with hands-on experience spanning AI behavior-tree architecture (Behavior Designer), authoritative multiplayer networking (Photon/Mirror), and aggressive VR (Meta Quest) optimization. Built designer-friendly tooling (Excel-driven balancing, prefab automation bridging Marvelous Designer/Blender/Unity) and has experience mentoring juniors within an entity/HMVC-based architecture at Playtica.
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Key Strengths
- Architected reusable, data-driven AI patrol behaviors in Unity using abstract interfaces
- Refactored monolithic behavior-tree logic into atomic reusable nodes to improve scalability and designer flexibility
- Built authoritative, event-driven multiplayer systems (Photon/Mirror) with bandwidth-conscious synchronization
- Applied interpolation/prediction techniques to reduce visible snapping and mitigate latency-driven desync
- Deep VR/mobile performance optimization experience (Quest): draw calls, culling, shader/lighting/overdraw, CPU update loop reduction
- Solved VR GPU bottlenecks from skinned meshes by baking animations and swapping simplified meshes for distant/non-interactive NPCs
- Enabled rapid balancing via Excel-driven configuration and safe data validation
- Created internal Unity editor tools to automate prefab/material setup and streamline artist/designer workflows
- Mentored juniors through architecture guidance, code reviews, and technical talks (entities + HMVC patterns)
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