Software: I have written production software for systems such as high-performance messaging libraries, Web search infrastructure (particularly index serving and load-balancing servers), and the original article similarity service for Google Scholar. I have worked on the design of software systems for cluster-level tracing, profiling storage availability and power management, among others.
Hardware: I have worked on several aspects of Google's hardware infrastructure such as the design of energy-efficient servers, high-availability datacenter infrastructure, storage systems, and the design of hardware accelerators for machine learning. While at Digital Equipment (later Compaq) I was one of the architects of Piranha, an influential multi-core shared memory multiprocessor design.
Leadership: I am the VP of Engineering of Core Systems, a central technical organization responsible for our data infrastructure, product and design components for all our products, and the Google developer platform. Before I was a Google Fellow (a technical title), led engineering for Google Maps, and was both the manager and technical lead for Google's computing infrastructure.