Mae Alex yn dod â chyfoeth o brofiad i'r rôl. Dechreuodd weithio i'r GIG mewn swydd rheoli dan hyfforddiant i raddedigion, ac mae wedi dal nifer o swyddi fel uwch-reolwr ar draws y De yn ystod yr ugain mlynedd ddiwethaf, gan gynnwys naw mlynedd fel Cyfarwyddwr Cynllunio yn Ymddiriedolaeth GIG Gofal Iechyd Gwent. Penodwyd Alex yn Gyfarwyddwr Gwasanaethau Sylfaenol, Cymunedol ac Iechyd Meddwl ar Fwrdd Iechyd Prifysgol Abertawe Bro Morgannwg, pan gafodd hwnnw ei greu yn 2009,  a chafodd ei phenodi'n Brif Swyddog Gweithredu ym mis Ebrill 2012, gyda chyfrifoldeb o ddydd i ddydd dros ddarparu'r holl wasanaethau clinigol o fewn y Bwrdd Iechyd.  Ymgymerodd Alex â rôl Prif Weithredwr Abertawe Bro Morgannwg ym mis Mawrth 2017.
Alex brings a wealth of experience to the role. She started working in the NHS as a graduate management trainee and has held a number of senior management posts across South Wales over the last 20 years, including nine years as Director of Planning for Gwent Healthcare NHS Trust. Alex was appointed to Abertawe Bro Morgannwg University Health Board when it was formed in 2009, as Director of Primary, Community and Mental Health Services, and was made Chief Operating Officer in April 2012 with day to day responsibility for delivery of all clinical services within the Health Board.  Alex took up the interim role of Chief Executive of ABMU in March 2017.