Nick Driebergen made his international debut at the European LC Championships 2006 in Budapest with a 12th place in the 50 m backstroke and a 13th place in the 100 m backstroke. Later that year he reached his first international final at the European SC Championships 2006 in Helsinki in the 100 m backstroke where he finished 8th. A week after he missed qualification for the 2007 World Aquatics Championships. He came back strong at the Dutch National Championships (LC) in June 2007 with national records in 100 and 200 m backstroke and nomination for the 2008 Summer Olympics in Beijing.