Trystan Larey-Williams Email & Phone Number

Redmond, Washington, Us

-Technical lead on team implementing Windows metafile renderer and parser to replace legacy GDI. -Develop features and maintain the Metal and OpenGL graphics backends for Office on Mac and iOS.-Improve app performance and memory utilization via XCode Instruments profiling -Improve Office apps stability, security and customer experience by responding to Watson and file 'fuzzing' (security) issues.-Help org adapt to changing graphics technical landscape on Mac platforms (i.e. OpenGL deprecation).

Lead technical developer of 3D astronomy simulation engine, NightshadeNG. Replaces legacy engine used in planetariums worldwide. Allows for interactive exploration of the Earth, other planets, our solar system, the surrounding galaxy and beyond. ---List of engine features I worked on personally--- * Non-linear projection (i.e. > 90 degree field of view)* Physical light model including; Visible spectrum emitted from sun to planets and moons + indirect bounce from planets to moons, radiance buffer for physically based blend of planet atmosphere with background stars/planets, BDRF shading models (oren-nayar) for planetary bodies.* Scalablity to display millions of actual stars simultaneously in motion at interactive frame-rates.* Dynamic shadows, i.e. moon and ring shadows cast on planets. * Navigation sub-system for flight and viewing.* Keyboard, game-pad, mouse, and script interfaces to navigation sub-system.* Integration of NASA's 'ephemerides' for planetary motion and orbit lines.* Integration of terrain engine (osgEarth) for detailed display of Earth, Mars, Moon, Mercury and Europa.* Integration of precomputed atmospheric scattering shader (PCAS)* Integration of CEGUI for user interface layer.* Integration of Lua using toLua++ to provide a scripting sub-system.* Audio sub-system using osgAudio and OpenAL.---Technologies Utilized---* C++; engine core* OpenGL 3.1+, fixed function pipeline mostly disabled* GLSL and lots of it* OpenSceneGraph, osgEarth, osgAudio, osgCairo/Pango* Lua* CEGUI* MariaDB

Seattle, Wa, Us

• Principal client side developer of enterprise scale software distribution engine.Software responsible for download, install and client side UX for downloadable games. Behavior and appearance very configurable via XML from web service. Extensible via custom Lua scripts distributed live via web service. Core code base customized and deployed for dozens of partner channels. Implemented in Lua, C++, COM/Attributed ATL, Javascript, XML.• Point contact person for development efforts on client side downloader.Involved with project scheduling and mentorship of junior developers. Worked closely with marketing and PGMs for feature definition. Increased project visibility by deploying GForge project tools.• Participated in architectural integration efforts with next-gen system.Discussed how to best leverage current client capabilities in new system. Involved in integration efforts of client with new DRM component. Assisted integration efforts of current client with new web service.

Austin, Texas, Us

• Developed ’outlook-like’ calendar application for Siebel’s embedded product lines.Data integrated with other mobile and desktop application ’views’.Handled graphical appointment layout and drag & drop modification.Used C++. Win32 / WinCE API, Embedded Visual Studio.• Participated in application footprint reduction efforts.Early CE devices had a 32MB per process memory limit. Developed instrumentation to track all memory operations via new/delete. Helped to identified memory intensive code areas.• Authored functional specifications and design documents for new features.Leveraged Rational Rose to model static and dynamic views of designs. Participated in design review/sign-off process with senior members. Worked with program management to assist in flushing out requirements.• Participated in several full release cycles of shipping product.

B.A., Computer Science

Certificate, Game Development