• MPhil in Mathematics (2017), University of Kelaniya.
• BSc.(Special) in Mathematics (2011), University of Kelaniya.
• Diploma in ICT(2006) ,IDM Computer Studies(PVT) Ltd.

• Number Theory
• Mathematical Modeling

• Senior Lecturer (Grade II) – Department of Mathematical Sciences, Faculty of Applied Sciences, Wayamba University of Sri Lanka (2020-to date)
• Lecturer– Department of Mathematical Sciences, Faculty of Applied Sciences, Wayamba University of Sri Lanka (2015-2020)
• Lecturer (Temporary) – Department of Mathematical Sciences, Faculty of Applied Sciences, Wayamba University of Sri Lanka (2014-2015)
• Tutor (Temporary) – Department of Mathematical Sciences, Faculty of Applied Sciences, Wayamba University of Sri Lanka (2013-2014)
• Tutor- Department of Mathematics, Faculty of Science, University of Kelaniya (2011-2013)

• Senior Treasurer, Mathematical Society of Wayamba, Wayamba University of Sri Lanka (2022-todate)
• Student Counselor, Faculty of Applied Sciences, Wayamba University of Sri Lanka (2023 Jan- todate)
• Mentor, Faculty of Applied Sciences, Wayamba University of Sri Lanka
• Department Coordinator, Exhibition and Seminar event, Department of Mathematical Sciences, Wayamba University of Sri Lanka (Oct 2017)
• Academic Sub-Warden (Part-Time)
  Kuliyapitiya Premises, Wayamba University of Sri Lanka (2016-2019)
• Academic Sub-Warden (Part-Time)
  Soma Guna Mahal Girl’s Hostel, University of Kelaniya (2011-2013)

• A member of NSF,
• A member of SLAAS,
• A member of SLAIHEE

• Session Chair, Symposium Mathematical Sciences, 10th Applied Science, Business & Industrial Research Symposium (ASBIRES) 2018 – Faculty of Applied Sciences, Wayamba University of Sri Lanka (Jun 2018)
• Member of the Editorial Board, Proceedings of the 12th Applied Science, Business and Industrial Research Symposium (ASBIRES) – 2020, Faculty of Applied Sciences (Dec 2020)

Conference Proceedings

• Driver Drowsiness Detection, Rajakaruna D.S.J., Dahanayaka S.D., Wickramasinghe W.A.A.D., Proceedings of the 14th Applied Science, Business and Industrial Research Symposium (ASBIRES) 2022 Forecasting
• Daily Beans Sales at ABC Supermarket using Time Series Analysis, Rajakaruna D.S.J., Dahanayaka S.D., Lakshmi M.P.D.S., Proceedings of the 14th Applied Science, Business and Industrial Research Symposium (ASBIRES) 2022
• Kumara Y.G.S.A., Dahanayaka S.D.,( 2020)., Developing An Army Tank Detector Using Neural Network , Proceedings of the 12th Applied Science, Business and Industrial Research Symposium (ASBIRES)
• Lakshani J.A.D.S, Jayasinghe W.J.M.L.P., Dahanayaka S.D., Selvarajah P., (2019)., Analysis of Productivity Rate: A Case Study of a Glove Manufacturing Company, Proceedings of the 11th Applied Science, Business and Industrial Research Symposium (ASBIRES), Pg.254-259
• Jayakody K.G.U,D., Panahatipola P.M.O.P., Dahanayaka S.D.,(2019)., Time Series Forcasting and Comparison using Neural Networks: A Study on Future Cryptocurrency values and Real Currencies, Proceedings of the 11th Applied Science, Business and Industrial Research Symposium (ASBIRES), Pg.321-324
• Amithasiri P.S.L., Dahanayaka S.D.,(2018)., Develop Polynomial Models for Fan Speed with CPU Heat in Computer Cooling System, Proceedings of the 10^th Applied Science, Business and Industrial Research Symposium (ASBIRES), Pg.35-36
• Dahanayaka S.D., Ekanayke E.M.P., and Piyadasa R.A.D.,(2017)., Proof of Fermat’s Last Theorem for without using the Method of Infinite descent, Proceedings of the 9^th Applied Science, Business and Industrial Research Symposium (ASBIRES), Pg.137-138
• Dissanayake M.M.I.S., Bandara D.M.S., Dahanayaka S.D.,(2017)., Scheduling Time Tables by using Graph Colouring, Proceedings of the 9^th Applied Science, Business and Industrial Research Symposium (ASBIRES), Pg.139-143
• Dahanayaka S.D., Ekanayake E.M.P., Piyadasa R.A.D.,(2016)., Simple and Short Proof of Fermat’s Last theorem for , International Postgraduate Research ConferenceUniversity of Kelaniya Pg.144
• Dahanayaka S.D. and Jayasinghe W.J.M.L.P, (2012)., On the Systematic of Anomalous Absorption of Partial Waves by the Nuclear Optical Potential, Proceeding of the 4th Symposium on Applied Science, Business & Industrial Research (ASBIRES), Faculty of Applied Sciences, Wayamba University of Sri Lanka, ISBN 978-955-8746-95-0, pp. 138-140
• Dharmasiri K.G.E.U, Dahanayaka S.D. and Jayasinghe W.J.M.L.P, (2013)., On the Striking Systematic of Anomalous Absorption of Partial Waves by the Nuclear Optical Potential, Proceeding of the 5th Symposium on Applied Science, Business & Industrial Research (ASBIRES), Faculty of Applied Sciences, Wayamba University of Sri Lanka, ISBN 978-955-4709-06-5
• Dahanayaka S.D. and Piyadasa R.A.D.,(2013)., On the Validity of Three-Body Model Calculation, 69^th Annual Session, Sri Lanka Association for the Advancement of Science (SLAAS).
• Dharmasiri K.G.E.U, Dahanayaka S.D. and Piyadasa R.A.D., (2012)., On the Integer Roots of Polynomial Equations, 13th Annual Research Symposium “The Multi-faced Nature of Research in the 21st Century” on Faculty of Graduate Studies, University of Kelaniya, Sri Lanka, 35-37