He served as the Permanent Representative to the United Nations in New York of Estonia from 1998 to 2000 and once again from 2015 to 2022.

Sven Jürgenson studied data processing at the Tallinn Polytechnic Institute and the Dresden College of Engineering between 1980 and 1987.

[2] In 1991 he joined the diplomatic service of Estonia, and was posted to Helsinki 1991–1993 and to Vienna 1993–1995.

He was Under-Secretary for Political Affairs from 2003 to 2006, Foreign Policy Adviser to the President of Estonia from 2006 to 2010 and Ambassador to France from 2010 to 2015.

From 2015 to 2022, he was the Permanent Representative to the United Nations in New York, and he was elected President of the UNICEF Executive Board for the term 2016.