He is a PPMC member and commiter of the Apache Storm project and a contributor to the Apache Spark project. He served as a track chair and program committee member at Hadoop Summit and Spark Summit in both 2013 and 2014. At Yahoo, he has also architected major platforms for personalization, ads serving, NoSQL, serving containers and messaging infrastructure. Prior to Yahoo, Andy served as Chief Architect at Netsape/AOL and Principal Scientist at Xerox.