Paul is Senior Clinical Lecturer and Honorary Consultant Neurosurgeon at the University of Edinburgh and NHS Lothian. He combines his operative work with laboratory research into the origin of gliomas. He also has an active involvement in clinical research and was co-founder of the British Neurosurgical Trainee Research Collaborative that he helped found as Chair of the British Neurosurgical Trainees Association in 2012.

Complementing his clinical work, Paul founded eoSurgical Ltd in 2012 along with co-founders Roland Partridge and Mark Hughes. The University spin-out now provides surgical simulation training around the world.

In 2014 Paul helped in the foundation of the Compassion Initiative at the University of Edinburgh and is a co-Director, working in close collaboration with Prof Jim Doty's Centre for Compassion and Altruism Research at the University of Stanford.

Paul is a member and co-chair of the Young Academy of Scotland.