Principal engineer for group of ~30 developers.* Interfaced with technical leaders via RFCs/TDDs, presentations, and individual/group discussions.* Served as technical liaison to other functions within the organization: product, quality, program, etc.* Contributed individually via domain expertise and providing fundamental research.* Oversaw large scale modernization of core scripting runtime (.NET) within Unity

Dual role with both management and individual contributor (IC) responsibilities.Manager* Founded, hired, and managed team as a “center of excellence” for foundational technology at Unity.* Mentored team members and peers, who advanced both as ICs and managers in the organization.* Ensured exemplary quality while delivering complex changes at lowest level of technical stack.Individual Contributor* Maintained and optimized the Mono (.NET) runtime including functionality such as the garbagecollector, JIT compiler, and runtime library.* Led the design and development of the IL2CPP AOT compiler providing a portable, performant, andmaintainable solution for Unity across all platforms.Working in the area of scripting within Unity: Compilers, Virtual Machines, Garbage Collectors, Performance Tuning and More.IL2CPP (Proprietary .Net AOT Compiler and Virtual Machine)* Ahead of Time Compiler to convert .Net assemblies into portable and performant C++* Lightweight runtime with providing core services (IO, Metadata, GC, etc)* Easily portable to many platforms and architectures* Execution speed and platform porting both order of magnitude faster than previous solution* Powering Unity scripting on WebGL (.Net -> C++ -> JavaScript, iOS, and many other platformsMono (Open Source .Net Virtual Machine)* Maintenance and feature development on over a dozen platforms* Garbage collector research and optimization

* Maintained and optimized the Mono (.NET) runtime including functionality such as the garbagecollector, JIT compiler, and runtime library.* Led the design and development of the IL2CPP AOT compiler providing a portable, performant, andmaintainable solution for Unity across all platforms.

Contributor to open source Mono Project (www.mono-project.com)* Implementation of COM Interop in mono runtime* Initial work on Windows 64-bit port of mono runtime* Maintenance of Windows 32-bit and 64-bit platforms

End-to-end involvement in large scale, multi-language, multi-platform software development. Active involvement in corporate:* Source control* Build infrastructure* Core technologies* Porting/platform strategy* Product deployment* UI technology and designProjects worked on include:* COM/Win32 replacement and porting technologies* Infrastructure for rapid feature exposure by domain experts* Performance (speed and memory) tracking and tuning* Embedding of .Net/mono runtimes* CAD/geometry import* Heads Up Display (HUD) style graphical controls* Non-admin based product deployment* Training course about standard development practices and core technologies

Worked on C# based user-interface and database development.