Clément Vermeulen was born in France in 1990 and started playing tennis when he was 8 years old. He began competing when he was 10, reaching the French 2nd series ranking at 17 and played over 500 official matches until he left for business school in 2008. Working through Europe, America, Australia and Asia, he graduated from ECE – BBA INSEEC in July 2013.
From 2006, he began coaching at the Franck Leroux Tennis Academy every summer, and also held a tennis trainer position at the Tennis Club of Arcachon. He graduated from the FFT Tennis Trainer program in July 2014.