Sanjiva Weerawarana

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Sanjiva Weerawarana
EducationRoyal College, Colombo
Kent State University
Purdue University (PhD)
Known forApache Software Foundation
Lanka Software Foundation
AwardsRed Hat Summit Award[1]
Scientific career
FieldsComputer Scientist
InstitutionsPurdue University

Sanjiva Weerawarana is a CEO, software developer and open-source software evangelist. He is known for his work on Web Services standards including WSDL, BPEL, and WS-Addressing. He is the founder, chairman and CEO of WSO2, an open-source middleware company, and creator of the Ballerina programming language. His involvement with the Apache Software Foundation includes project work on SOAP, Apache Axis and Apache Axis2.

Early life and education[edit]

Weerawarana attended Kent State University, majoring in applied mathematics / computer science, before completing a PhD at Purdue University.


After graduation, Weerawarana joined IBM Research working in Hawthorne, New York, until he left to found the startup WSO2.

Weerawarana has been involved with the Apache Software Foundation since 2000 when he worked on the original Apache SOAP project. Weerawarana is an elected Member of the Foundation and is a committer on several projects.[2]

Weerawarana set up the Lanka Software Foundation, and was involved with the Sahana FOSS Disaster Management System.

He is an advisory board member of the company 24/7 Techies.[3] He is a visiting professor and lecturer at the University of Moratuwa and a board alumnus of the Open Source Initiative.

He currently lives in Colombo, Sri Lanka.[citation needed]


Notable research publications include:[4]

  • Colombo: Lightweight middleware for service-oriented computing[5]
  • Enterprise Services[6]


  • Sanjiva Weerawarana, Francisco Curbera, Frank Leymann and Donald F. Ferguson (2005). Web Services Platform Architecture. Prentice Hall. ISBN 0-13-148874-0.{{cite book}}: CS1 maint: multiple names: authors list (link)
  • Maria E. Orlowska, Sanjiva Weerawarana, Michael P. Papazoglou, Jian Yang (2003). Service-Oriented Computing -- ICSOC 2003 : First International Conference, Trento, Italy, December 15–18, 2003, Proceedings. Springer. ISBN 3-540-20681-7.{{cite book}}: CS1 maint: multiple names: authors list (link)

See also[edit]


  1. ^ [1]
  2. ^ "ASF Committers by id".
  3. ^ "24/7 Techies Advisory Board".
  4. ^ "DBLP: Sanjiva Weerawarana".
  5. ^ Curbera, F.; Duftler, M. J.; Khalaf, R.; Nagy, W. A.; Mukhi, N.; Weerawarana, S. (2005). "Colombo: Lightweight middleware for service-oriented computing". IBM Systems Journal. 44 (4): 799–820. doi:10.1147/sj.444.0799.
  6. ^ Fremantle, Paul; Weerawarana, Sanjiva; Khalaf, Rania (October 1, 2002). "Enterprise services". Communications of the ACM. 45 (10): 77–82. doi:10.1145/570907.570935. S2CID 15335599 – via October 2002.

External links[edit]