An excellent teacher needs to go beyond excellent lecturing or excellent knowledge dissemination. 

Undergraduate Teaching == {

• Wireless ad-hoc and Sensor Networks, BSc degree in Computer Science course, University of Colombo School of Computing, Colombo, Sri Lanka since 2007
• Information System Security and Audit, BSc degree in Information Technology, University of Colombo School of Computing, Colombo, Sri Lanka since 2007
• Cryptographic Systems, BSc degree in Computer Science course, University of Colombo School of Computing, Colombo, Sri Lanka since 2004
• Introduction to Programming, BSc degree in Computer Science course, University of Colombo School of Computing (UCSC), Colombo, Sri Lanka since 2003
• Information Theory, Coding and Cryptography, BSc (Special) degree in Computer Science course, University of Colombo, Colombo, Sri Lanka from 1999 to 2004 (BSc (Special) degree in Computer Science is a 4 year, British Computer Society (BCS) accredited course)
• Security of Information Systems, BIT external degree in Information Technology course, University of Colombo School of Computing (UCSC), Colombo, Sri Lanka since 2003
• Operating System and System Programming, BSc (Special) degree in Computer Science course, University of Colombo, Colombo, Sri Lanka in 2005 (BSc (Special) degree in Computer Science is a 4 year, British Computer Society (BCS) accredited course)
• Java Security, BSc degree Course, Stockholm University/Royal Institute of Technology, Stockholm, Sweden from 2000 to 2003
• Computer fundamentals, BSc (General) degree course, University of Colombo, Sri Lanka from 1998-1999
• Computer Architecture, BSc (General) degree course, Open University, Colombo, Sri Lanka in 1998

}

Postgraduate Teaching == {

• Cryptographic Systems, Master of Computer Science (MCS) course, University of Colombo School of Computing (UCSC), Colombo, Sri Lanka since 2008
• Wireless Ad-hoc and Sensor Networks, Master of Computer Science (MCS) course, University of Colombo School of Computing (UCSC), Colombo, Sri Lanka since 2008
• Data and Network Security, Master of Information Technology (MIT) course, University of Colombo School of Computing (UCSC), Colombo, Sri Lanka since 2008
• Fundamentals of IT, Master of Information Technology (MIT) course, University of Colombo School of Computing (UCSC), Colombo, Sri Lanka since 2008
• Cryptographic Systems, Advanced MSc degree in Computer Science course, University of Colombo School of Computing (UCSC), Colombo, Sri Lanka from 2003 to 2007
• E-Commerce Security Technologies, MSc degree in Computer Science course, University of Colombo School of Computing (UCSC) , Colombo, Sri Lanka from 2003 to 2007

}

University Academic Career (since 1998)

• Senior Lecturer, Department of Communication and Media Technologies, University of Colombo School of Computing, University of Colombo, Sri Lanka since December 2004
• Visiting Lecturer, Department of Mathematical Sciences, Eastern University, Sri Lanka, 2010
• Academic Visitor, Institute for Advanced for Advanced Studies, University of Strathclyde, Glasgow, UK, June, 2010
• Visiting Fellow, Department of Computer and Information Sciences, University of Strathclyde, Glasgow, UK, February, 2010
• Visiting Fellow, Department of Information Engineering, Research School of Information Sciences and Engineering, The Australian National University (ANU), Canberra, Australia, June, 2006
• Visiting Lecturer, Department of Mathematical Sciences, South Eastern University, Sri Lanka, 2008
• Lecturer, Department of Communication and Media Technologies, University of Colombo School of Computing, University of Colombo, Sri Lanka from September 2002 to December 2004
• Research Scientist, Cyberspace Security Policy and Research Institute, School of Engineering and Applied Sciences, George Washington University, US from November 2002 to December 2004
• Ph.D. Student, Department of Computer and System Sciences, Stockholm University, Sweden from January 1999 to July 2003
• Lecturer, Department of Computer Science, University of Colombo, Sri Lanka from January 1999 to August 2002
• Assistant Lecturer, Department of Statistics and Computer Science, University of Colombo, Sri Lanka from November 1998 to December 1998
• Visiting Lecturer, Open University, Sri Lanka in 1998
• Instructor, Department of Statistics and Computer Science, University of Colombo, Sri Lanka from January 1998 to October 1998