Dr Hariri is a Consultant Audio-Vestibular Physician at Charing Cross Hospital and holds an Honorary Senior Clinical Lecturer post at Imperial College London . He is Team Leader for the Neonatal Hearing Screen Programme and Educational Supervisor for doctors in training. He deals with hearing loss, tinnitus (noises in the ears), dizziness and vertigo in both adults and children.

His specialist expertise is in managing hearing loss in newborns and children, especially those with complex developmental and behavioral delay.