She undertook specialist training in Endocrine Surgery at Chelsea & Westminster, the Hammersmith and as the T.S. Reeve Fellow at the Royal North Shore Hospital, Sydney, Australia. She was awarded the ASGBI Gold Medal for the best performance in the Intercollegiate Specialty Examination and became an Fellow of the Royal College of Surgeons (endocrine subspecialty) in 2016.

Miss. Di Marco took up her post as Consultant Endocrine Surgeon at the Hammersmith in 2019 where she manages endocrine surgical diseases of the thyroid, parathyroid and adrenal exclusively.  

She is an Honorary Senior Lecturer at Imperial College, teaching and supervising undergraduates, BSc students on the endocrinology & surgical design BSc and postgraduates.  She is currently reviewing the surgical curriculum at Imperial College School of Medicine. She has an active research interest, focusing particularly on surgical technology and the impact of endocrine surgical pathologies in women of reproductive age and has numerous publications.

She was an accomplished athlete, representing Cambridge University Women's Boat Club in the Women's Boat Race twice (as club President in 2000) and then turning to triathlon and duathlon in which she represented GB as an age-group athlete.