Tillie was born in Cagnes-sur-Mer, France. He is from an athletic family – his father Laurent is a volleyball coach and former player; his mother Caroline played at the professional and Olympic levels (as did Laurent); his older brother Kim played college basketball with the Utah Utes and now does professionally in Europe and with France; and his younger brother Killian played on a two-way contract with the NBA'sMemphis Grizzlies and its G League affiliate, Memphis Hustle.
He is married to Anna Diakiewicz and has a daughter, Olivia.[4]
Career
After many appearances with the junior and youth national teams, Tillie debuted for the senior national team at the 2012 World League, where the French team finished in seventh place.[5]
Tillie started his career at Thompson Rivers University for their athletic program Thompson Rivers WolfPack in Kamloops British Columbia. Kevin played with fellow Olympian Gord Perrin in his first year. In his second year he was second in the country in both kills per set and total kills, with 400.[6] He made the All-Canadian Team honors averaging 4.41 kills per set. Tellie's second year setter is UBC Thunderbirds Headcoach, Mike Hawkins
After playing for the TRU WolfPack, Tillie transferred to the University of California, Irvine Anteaters for the 2012 and 2013 seasons. Tillie was instrumental to UC Irvine as they made back to back NCAA championship runs those two years. Tillie earned AVCA All-American honors for both years.
In 2015, he moved to the Polish PlusLiga team, ZAKSA Kędzierzyn-Koźle and in his first professional season won the 2015–16 championship.[7][8] In May 2016, he extended his contract until 2017, and the following season once again won the championship, as well as the national cup.[9]