Google Core : multiple versions of high availability, highly scalable backends (2+ million QPS) that store user contributions / comments / posts across majority of Google products. Build on top of distributed SQL Spanner database (older versions on top of NoSQL BigTable / Megastore) . User visible products include: YouTube Comments, Chat/Hangouts, Google Photos, Google+, and many others.

Mobrank / TopPlaces: places search and recommendation engine that incorporates user location signals from multiple sources in a privacy compliant way with other quality signals for building list of recommended places to visit or assisting in reranking search results.

iTunes desktop client development, video playback rewrite, airplay integration.

Worked on a number of high-profile Unified Communication and real time collaboration projects: Office Communicator, LiveMeeting, Windows Meeting Space / Windows Vista, Microsoft SharedView.

Key responsibilities included implementing user interface and application sharing technologies enchantments.

Latest work was firmware development for Zune HD and Zune.