Joel Kaltman

At The Sandbox, I led a gameplay team of 10+ engineers and owned the multiplayer layer for Game Maker, a UGC tool for building and publishing multiplayer experiences. I set technical direction, reviewed code, and coordinated delivery across engineers, QA, and level designers in a distributed team.

I built and optimized Unity DOTS gameplay systems using ECS, Jobs, Burst, and Netcode, while owning Jenkins CI/CD, AWS GameLift, Datadog, and Backtrace for live operations. I also created internal Python tooling to streamline daily development and took ownership of Sandbox Origins through its final stage.

Alongside The Sandbox, I shipped Unity/C# web and mobile games and defined architecture for online features. I integrated AWS, PlayFab, Firebase, Mixpanel, and Unity Cloud Build.

Earlier, I developed C++ gameplay, graphics-engine, and real-time simulation systems, including a tank training simulator still used by the Argentine Army. My work has included HLSL shaders, GPU-side skinning, animation systems, asset pipelines, scenario-editing tools, and published technical papers on system architecture and AI.