A veteran diplomat in the Nepalese foreign service, he worked on various global issues.

He is the Chair of the Global Coordination Bureau of the Group of Least Developed Countries and contributed to the successful conclusion of the Fourth United Nations Conference on the Least Developed Countries and the follow-up process.

From 2010 to 2011, he was Chair of the Working Group on Lessons Learned of the Peace building Commission.

[3] From 2003 to 2007, Acharya was Nepal's representative to the UN and World Trade Organization (WTO) in Geneva.

Acharya obtained a Master of Economics degree from Tribhuvan University in Kathmandu, Nepal.