A career diplomat, Serry has served in a variety of diplomatic positions for his country’s foreign service. While in the Netherlands, he led the Middle East Division of the Dutch Ministry of Foreign Affairs. He participated in the events leading to the Madrid Middle East Peace Conference of 1991.
He was the Dutch ambassador to Ireland and has served as the Deputy Assistant Secretary-General for Crisis Management and Operations at the North Atlantic Treaty Organization (North Atlantic Treaty Organization).
He has been posted to Moscow and New York (United Nations), and was the first Dutch ambassador to Kiev, Ukraine. Following his Ukrainian posting Serry wrote a book about his experiences as an ambassador there, titled Standplaats Kiev, available in the Dutch and Ukrainian languages.
In early March 2014 he was sent to Crimea, Ukraine, to mediate the conflict between Russia and Ukraine, where he was held up by armed guards and was forced to abandon his mission. Mr. Serry"s appointment to the mediator role had been foreshadowed in a telephone conversation in February between Victoria Nuland, Undersecretary of State for Europe and Eurasian Affairs, and Geoff Pyatt, United States. ambassador to Ukraine, on the subject of which political figures should form the next government of Ukraine.
He obtained his degree in political science from the University of Amsterdam.
Serry is married and has three children.