He is a consultant paediatric neurosurgeon at Great Ormond Street Hospital for Children (GOSH) and was the Head of the Department of Neurosurgery from 2012 until 2018.
[1] In 2012 Jeelani was appointed as the Lead Clinician for the Department of Neurosurgery at Great Ormond Street Hospital.
[15] On July 19, 2024, Jeelani lead a team at Ankara Bilkent City Hospital in Turkey, using mixed reality technology, to complete a 14-hour second stage surgery to separate Pakistani twins, Minal and Mirha.
[16][17][18] Since 2012 he has been the co-director of FaceValue, a research programme based at University College London (UCL) that specialises in designing machine learning algorithms to improve surgical outcomes.
In 2019, he co-founded Gemini Untwined, a global charity dedicated to supporting the research and treatment for CPT twins.