Vitor Souza

About

Unity/C# gameplay engineer who has owned end-to-end systems for live-service AR and shipped VR (Meta Quest) and mobile titles. Built a hybrid LLM-driven real-time NPC interaction pipeline (STT/LLM/TTS) with streaming SSE, strict JSON contracts, and state-machine execution for stability, plus a custom UDP/TCP authoritative multiplayer stack deployed on AWS EC2 with live monitoring and rapid hotfix capability.

Experience

Education

Key Strengths

• Owned and shipped modular, data-driven Unity gameplay systems for live-service with weekly releases
• Performance-focused engineering (maintained 60 FPS in complex scenarios; reduced runtime/edge-case failures)
• Built internal tooling to enable designer iteration without code changes
• Designed hybrid on-device + API LLM NPC pipeline with streaming responses and strict JSON contracts (runtime errors near zero)
• Implemented custom SSE support in Unity via custom download handlers
• Built a custom VR multiplayer stack from scratch (UDP/TCP) with authoritative server, lag prediction, and 30Hz tick sync
• Improved matchmaking UX via instant matches using bots and mid-match replacement with real players
• Strong live-ops mindset: internal testing phase, monitoring dashboard, EC2 deployment with automated deploys for rapid fixes
• Cost-conscious architecture decisions (custom networking vs Photon/Unity Netcode; LLM cost control with NIM + GPT fallback)