• Senior Lecturer - Department of Pharmacy, University of Peradeniya – March 2015, Present

• Analytical Chemist, Pharmaceutical Chemistry Division, Australian Laboratory Services, Sydney, Australia (Apr 2013 - Feb 2015)

• Casual Academic, School of Chemistry, The University of Sydney, Australia (Apr 2009 - Mar 2013 )

• Lecturer (Probationary), Department of Science and Technology, Uva Wellassa University, Sri Lanka (July 2007 - March 2009)

• Research Assistant, Natural Products Division, Institute of Fundamental Studies, Hantana, Sri Lanka (Nov 2003 - Jun 2007)

• Agnes Campbell Prize for excellence in Organic Chemistry, awarded by School of Chemistry, The University of Sydney, Australia (2009,2010,2011 and 2012)

• University of Sydney International Scholarship (USydIS), awarded by The University of Sydney, Australia (2009-2012)

• Presidential Award for Scientific Research, awarded by His Excellency the President, Democratic Socialist Republic of Sri Lanka (2007 - 2008)

• Kandiah Memorial Award(Basic Chemistry), for the best piece of research in Chemistry by a postgraduate student at a higher educational institute in Sri Lanka. Awarded by Institute of Chemistry Ceylon (2008)

• Associate Member, Royal Society of Chemistry, United Kingdom (Since 2011)

• Natural Product Chemistry.
• Organic Synthesis and Medicinal Chemistry.
• Pharmaceutical Analysis.

• The first catalytic, enantioselective Aza-Henry reaction of an unactivated cyclic imine, N. R. Amarasinghe, P. Turner and M. H. Todd, Adv. Synth. Catal. 2012, 354, 2954-2958

• Antioxidant flavonol glycosides from Elaeocarpus serratus and Filicium decipiens, L. Jayasinghe, N. R. Amarasinghe, B. G. S. Arundathie, G. K. Rupasinghe, A. N. H. Jayatilake and Y. Fujimoto, Nat. Prod. Res. 2012, 26, 717-721

• Chemical constituents of the fruits of Artocarpus altilis, N.R. Amarasinghe, L. Jayasinghe, N. Hara and Y. Fujimoto, Biochem. Syst. Ecol. 2008, 36, 323-325.

• Flacourside, a new 4-oxo-2-cyclopentenylmethyl glucoside from the fruit juice of Flacourtia indica, N. R. Amarasinghe, L. Jayasinghe, N. Hara and Y. Fujimoto, Food Chem. 2007, 102, 95-97.

Grants Recieved

Postgraduate Supervision