• Temporary Demonstrator, Department of Mathematics, University of Kelaniya, February 2019 – September 2019

• Temporary Lecturer, Department of Mathematics, University of Kelaniya, October 2019 – December 2020.

• Graph theory

• Ordinary and partial Differential equations

• Data analysis

• Spectral theory

Publications

• Wickramasinghe, K.G.M.U. and Perera, K.K.K.R.,"Isoperimetric Number and Binding Number of Roach graph", International Conference on Mathematics and Mathematics Education (ICMME 2019), University of Peradeniya, Sri Lanka.
• Wickramasinghe, K.G.M.U. and Perera, K.K.K.R., "Randic' Index and Harmonic Index of Roach graph", 12th International Research Conference 2019, General Sir John Kothalawala Defence University, Sri Lanka.
• Wickramasinghe, K.G.M.U. and Perera, K.K.K.R., "Domination Number and Non - Split Domination Number of Roach graph", PGIS research Congress 2019 (RESCON), University of Peradeniya, Sri Lanka.
• Wickramasinghe, K.G.M.U. and Perera, K.K.K.R.,"Effect of adding a new edge to a non-trivial graph, on Randic' Index and Harmonic index, H(G)" , RESCON 2020, University of Peradeniya. Sri Lanka

• Workshop, “Empower Me 2019” on enhancing the employability of youth in Sri Lanka, organized by University of Kelaniya.

• Workshop on Modelling and Simulations on Mathematical Biology (2017), conducted by the Research and Services Centre, Faculty of Science, University of Kelaniya.

• Workshop on Scientific Research (2018), conducted by the Research and Services Centre, Faculty of Science, University of Kelaniya.