After completing school, Witteveen performed with several theatre groups and had various guest roles in Goede tijden, slechte tijden, Bureau Kruislaan and Diamant.[1]
In 1996, she played Desirée van Cloppenburg in the daily soap opera Goudkust. She was the only actor with the show for its entire run, ending in 2001.[3]
She appeared in the film Ver van familie (2008) with Katja Schuurman and Camilla Siegertsz.[1]
In late 2008, she played Noortje Warmerdam in Pauwen en Reigers ("Peacocks and Herons").[1]
In the early 2010s, she had roles in De avonturen van Kruimeltje and Olifantenvoeten, then took a hiatus from acting.[1] In 2018, she returned to the screen as Dominique de Bree in #Forever.[1]
Witteveen created the personal training program Hier en Nu. She founded the Haagse Kringen with Hans Steijger, Harry Mertens, Meike van der Linde, André van den Berg and Daniëlle Louis,[4] and founded her own theatre, Première Parterre, in 2005.[5]
In May 2017, she directed De absolute vrijheid for Het Portret Spreekt, a play by Belle van Zuylen, translated by Carel Alphenaar and Hanna Laus; and directed another van Zuylen play, De edelman.[2]
On 17 November 2018, Witteveen participated in the Indië Monologen ("Indies Monologues") at the theatre De Muze in Noordwijk. It was later produced as Indische Essenties ("Indonesian Essentials") at Première Parterre.[5]