Sanjiva Weerawarana is the Founder / Chief Architect of WSO2, where he leads the Ballerina project. Sanjiva founded WSO2 in 2005 and served as CEO for 12 years, overseeing the creation of a complete set of middleware products. Ballerina represents the next generation of tools and languages with a focus on data integration. Prior to WSO2, Sanjiva was at IBM Research where he led the development of Web services standards and technologies. He has also been a long time open source developer and advocate and he is a Member of the Apache Software Foundation, an Emeritus Board Member of the Open Source Initiative and Founder and Chief Scientist of the Lanka Software Foundation. He volunteers as the IT Advisor to the Sri Lanka Army. He received a Ph.D. in Computer Science from Purdue University in 1994.