David Henke joined LinkedIn in November 2009 as VP Engineering/Operations and was responsible for all Technology for over 2 years and for Production Operations, IT, Data Systems, and Security for next 2 years. He retired in November 2013. Prior to that David was Senior Vice President of Engineering at Yahoo! for four years, responsible for Engineering/Operations for the Yahoo! Search Marketing organization and the Production Operations infrastructure for the entire company. (#28234)