Dr Samarasinghe is a General Surgeon with subspeciality training in trauma/surgical critical care. Dr Samarasinghe undertook surgical training at Westmead hospital and other hospitals in the Sydney West Area Health covering a range of subspecialities including upper gastrointestinal, lower gastrointestinal, head and neck, surgical oncology, breast/endocrine, general surgery and trauma. She further undertook two years of fellowship at Westmead Hospital in Trauma (level 1 trauma centre) and General Surgery.

Dr Samarasinghe currently works as a VMO at Shoalhaven District Memorial hospital. She has experience in general surgery, which includes Emergency General Surgery, trauma related operations in bleeding critically unwell patients, gallbladder disease, hernias, skin and soft tissue disease. She is accredited with the Gastroenterological Society of Australia (GESA) for Gastroscopy and Colonoscopy.

Dr Samarasinghe is a compassionate surgeon, who strives for excellence in patient care, preoperative, operative and post operative care. She sees the value of good communication and patient participation in decision making.

She has a passion to teach and to engage in clinical research. 

Dr Samarasinghe also speaks fluent Sinhalese and Tamil. She is a director of Australia and New Zealand Association for the Surgery of Trauma and is a member of the chest wall injury society, General Surgeons Australia and Royal Australasian College of Surgeons.