David is an independent consultant focusing on energy matters particularly oil and gas, having retired from 23 years with Engen, a refining and marketing company.

For the initial 15 years of his career, David lectured at the University of KwaZulu-Natal before moving into industry. More recently he has been appointed as an Adjunct Professor in the Chemical Engineering Department at the University of Cape Town.

He is active in a number of energy and professional organisations.