Dr Walsh is an advanced specialist geriatric oncology pharmacist, with specialist interest in symptom management, palliative care, pancreatic cancer and medication optimisation in complex comorbidity. His research interests include unplanned hospitalisation due to adverse drug events, medication-related problems in older adults with cancer and pharmacological management of cancer-related symptoms and cancer treatment-related toxicity. He is a member of the National Cancer Control Programme Geriatric Oncology Steering Committee, the British Oncology Pharmacy Association Geriatric Oncology Specialist Advisory Group and the International Society of Geriatric Oncology Nursing, Allied Healthcare and Scientists group. His work in geriatric oncology has led to national and international recognition, being named the International Society of Geriatric Oncology Nursing and Allied Healthcare researcher of the year in 2023, and the HPN Irish Hospital Pharmacist of the Year in 2024.

As an adjunct senior clinical lecturer in the School of Pharmacy, Dr. Walsh will contribute to the curriculum design, teaching, delivery and research focus of oncology, haematology and palliative care within the school. He will also contribute practice-based research outputs through his clinical work in University Hospital Waterford, and contribute to the supervision of undergraduate and postgraduate research projects, where indicated.