Marietjie worked as an associate lecturer at Solent University between October 2011 and December 2014, then from January 2015 began working in her current position of senior lecturer.
She has been a qualified practice teacher since 2007. Since January 2009 she has been a freelance social work practice educator, and has prior experience as a student work base supervisor (2002 – 2007). She has experience of working as an associate/visiting fellow for Southampton University.
From 2013 - 2015 Marietjie worked as an independent practice assessor on the ASYE programme run by Southampton City Council. She has also run a training programme (2012 – 2015) on NHS continuing healthcare for the Southampton City Clinical Commissioning Group.