Having qualified as a physiotherapist Marilize worked across numerous health care settings before commencing a post as clinical lead physiotherapist for Critical Care and Surgery at Hywel Dda University Health Board. She completed a MSc in Critical Care Medicine and has extensive clinical experience. After being involved in local and national improvement projects she was seconded to the 1000LivesPlus Campaign in Wales as National Programme Manager for Enhanced Recovery After Surgery between 2011-2012. She is currently the Improvement and Transformation Lead within Hywel Dda University Health Board and in 2020 she graduated as an IHI Improvement Advisor