Yahoo!Service Engineer, Principal
Mar. 2010 - May. 2012Sunnyvale, California, United States• Converted 40,000 Linux servers (1000 networks) from publicly routed IP addresses to RFC1918 addresses
• Identified BIOS defect on 12,000 servers, worked with the vendor to provide a fix, upgraded BIOS on all servers without cluster downtime
• Responsible for administering 40,000 Linux servers, including on-call responsibility
• Responsible for managing, monitoring, and upgrading the world’s largest Hadoop clusters
• Responsible for managing, monitoring, and upgrading Hadoop services such as Pig, HCatalog, Hive, and Oozie