Viktor Grigorev

About

Unity/C# tech lead specializing in multiplayer systems and networking reliability: built a transaction/prediction-based multiplayer inventory system using snapshots/deltas that eliminated duping and supports very large item transfers via RPC. Also implemented an LLM-driven localization pipeline (SGLang on DGX Spark with Gemma Translate) with automatic OpenAI fallback and human QA, and has shipped VR work on Meta Quest 3 with cross-platform input abstraction (mobile/VR/web).

Key Strengths

• Owned and shipped multiplayer inventory system end-to-end (transactions + prediction + snapshots/deltas) preventing item duplication/ownership bugs
• High-throughput inventory RPC handling (500–1000 items per transfer without hitting limits; typical usage 5–10 items)
• Built LLM translation pipeline integrated with Unity Localization (SGLang on DGX Spark using Gemma Translate)
• Reliability design with automatic OpenAI fallback when self-hosted translation server is overloaded plus human verification loop
• Multiplayer session architecture using Unity Netcode + Lobby API with dual transports (Unity Relay and Steam relay) and reconnect handling
• Debugged live desync issues (NetworkList extra deltas) using network logs, debugger, and RPC analysis
• Cross-platform VR/mobile/web input abstraction layer enabling shared gameplay actions across very different input modalities
• VR performance optimization experience on Meta Quest 3 under tight frame budgets

Experience

Education

Skills

Languages