From complex gameplay systems to performance optimization and critical bug fixing, I help studios solve challenging engineering problems in Unity and Godot.
Tell me about your project, your technical challenges, and what you need to achieve.
I developed the economy server authoritative systems, including gathering, crafting, and building mechanics, ensuring that world-state changes were validated and controlled by the server.
I implemented a proximity-based voice chat system, using server-authoritative player positions and proximity rules to determine which players could communicate with one another.
I identified, reported, and debugged hundreds of issues, helping stabilize the build and ensure a clean, release ready gold candidate.
I helped optimize the processing of hundreds of simultaneous bullets and enemies on screen, improving gameplay performance during intense gameplay sequences.
I engineered custom Scriptable Render Pipeline solutions for Nintendo Switch, like a custom occlusion culling, balancing visual quality with the hardware’s constraints.
I created GPU compute-shader systems that moved CPU-bound workloads to the GPU, improving frame rate by up to 4×.
Working with art, engine and gameplay teams, I identified and addressed graphics-pipeline inefficiencies, reducing manual asset setup time by 50%.
I implemented responsive, precision player input-responsive movement controls and invincibility frames (i-frames) to deliver tight, responsive combat and a satisfying gameplay feel.
I designed and implemented a custom Entity Component System architecture that supported hundreds of simultaneous on-screen units on mobile devices before Unity DOTS was available.
I built rapid gameplay prototypes and feature demonstrations for client reviews and investor presentations, helping evaluate mechanics before committing to full production.
I designed and developed C++ backend servers for a Windows-based cloud gaming platform supporting thousands of concurrent users, focusing on low-latency gameplay.
I developed a Unity SDK and API that enabled third-party studios to integrate achievements, usage metrics and game events with the Facebook Gaming platform.
I engineered low-level hooks into Win32 system calls to intercept and redirect core functions to the cloud server layer, giving full control over game behavior and client-server communication.
I successfully streamed complex, PC-only titles to Android via proprietary server-side rendering and virtualization, proving platform-agnostic streaming viability.
I debugged and resolved critical issues in gameplay, stabilizing the build and helping the team deliver an earlier release.
I developed five commercial mobile game titles for low-end Android and iOS devices, working within tight performance and memory constraints.
I implemented backend and monetization features for game projects, including in-game purchases, player data tracking and analytics integration.
I engineered a 3D first-person multiplayer shooter to run seamlessly on devices under 27MB APK size, improving memory asset loading, compression techniques, and other optimizations.
I owned development of core game systems including graphics rendering, gameplay logic, physics simulation, AI behavior trees, and UI implementation.
I implemented a performant 3D physics engine within a 2D mobile game, enabling physics gameplay on low end devices.
I developed an Android game that used accelerometer based controls early in the platform's evolution, translating device motion into interactive gameplay.
I engineered a complete Java based rendering engine using OpenGL ES, enabling real-time graphics on early Android devices.
© 2026 Chema Sanchez
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