I've contributed C++ engine and tools work to Amazon's New World: Aeternum at Stainless Games, including workflow tools, editor filtering, water-baking change detection, and entity-parenting fixes in the Azoth engine.
I've also built replicated UE5 matchmaking and UI systems, gameplay systems for a UE4 MOBA, and Fado Engine from scratch in C/C++ and DirectX11. My work spans custom memory management, collision, rendering, audio, UI, particles, and data-driven gameplay tools.

