Career
Early in his career, Markuntsov competed internationally for Russia on the junior level with Valentina Razskazova. He had the most success with Yuko Kawaguchi, competing for Japan. They are the 2002 and 2003 Japanese national champions.
Their highest placement at a senior International Skating Union Championship was seventh at the 2003 Four Continents.
They were coached by Tamara Moskvina. They ended their partnership following the 2002–2003 season.
In 2008, Markuntsov began skating as an adagio pair with British skater Catherine Harvey. They have skated as principal pairs in Disney on Ice shows.
In 2009/10 they appeared as principal pairs on Royal Caribbean cruise ship "Navigator of the Seas" cruising the Caribbean and Medditeranean seas.
Harvey and Markuntsov were married in Manchester, England in December 2010. Both of them now teach figure skating at the Leisure Box in Birmingham. (with Kawaguchi).