Wijeratne started her career as an associate consultant at Bain & Company from 2000 to 2002.
She then worked at the Foreign and Commonwealth Office, first as a desk officer (October 2002 - April 2004), vice consul, British Consulate-General in Hong Kong (May 2004 - May 2007), team leader (June 2007-May 2010) and finally as first secretary to the British High Commission in Delhi (June 2010 - September 2013).
- MA Oriental Studies (Chinese), University of Cambridge 2000, including a year studying mandarin chinese and history at the Ocean University of China in 1999.
- Lisa Gamandi, 'HM Diplomatic Service Overseas reference list', Future Firecrest Programme, July-August 2005, accessed 26 September 2014
- Clare Wijeratne Linkedin undated, accessed 26 September 2014 and 10 August 2017.