[2] She began diving as a performer on Royal Caribbean Cruise Lines after graduation.
[3] She made her Red Bull Cliff Diving World Series debut in Saint-Raphaël, France in 2021, becoming the first diver from the Netherlands,[2] as well as the first married couple, with husband Matt Cooper, to compete at the Red Bull Cliff Diving World Series.
[2] She placed eleventh, with 232.70 points, at the World High Diving Championship in Fukuoka, Japan.
[6] Van Katwijk placed fourteenth at the women's 20-metre at the 2024 World Aquatics Championships in Doha.
[8] Van Katwijk is married to Matt Cooper (born (1989-03-04) March 4, 1989 (age 35)[9]), an American high diver.