Built data science and information retrieval (search) teams; trained software engineers to be data scientists. Achieved double-digit percentage lift in clickout revenue with search algorithm changes and more than 2x lift in social content and engagement. Technically hands-on in both data science and prodution engineering.

Built data warehouse team; deployed stable and reliable operations around Hadoop and Hive, compensating for immature technology. Directly involved in production operations for the core website, performance improvement and problem diagnosis, software release processes, and risk assessment and mitigation. Spoke at industry conferences; actively involved in recruiting.

Technical Lead for the Google Flights data cache, providing instant results to airfare queries. Previously, Technical Lead for a team of five on the Social Image Search product, which showed personally relevant image results based on social connections. Responsible for architecture, project planning, and team coordination. Engineering tasks included data processing pipelines in the map-reduce framework, extraction and analysis of user and data statistics, and development of Javascript and HTML on top of Java servlets.

Designed next generation air transportation simulation architecture on an inherently stochastic framework with flexible runtime fidelity scoping using object-oriented approach in C++. Designed proposals for both government and industry projects and met with prospects and customers at major airlines and decision support tool vendors.

Designed digital electronics and wrote microcontroller firmware for high efficiency solar controllers and lithium ion batteries, mostly in Atmel AVR 8-bit assembly. Products contained between one and five micros with 2k to 128k of code space. Part time.

Extensible Air Network Simulation (MEANS) development team of five people
on average. Designed and implemented a fast-time event-based C++
simulation of airspace and airports to assess delays and evaluate new
scheduling and operational concepts. Developed visualizations and statistical
analyses of simulation results.