Inspired by Maths at Warwick, David's background is in analytical problem solving. During university he took a year out as the elected Finance and Commercial Services Officer to run the Students Union's finances. After University he worked with corporate clients as a consultant and analyst for L.E.K. Consulting in London and Boston before transferring to the charitable sector to work for New Philanthropy Capital, helping to bring an analytical approach to the allocation of charitable funding.

David used his analytical background to help elect the Labour party in 2005 to a record third term in government, and then moved to New York to run the analytics and targeting operations for a high profile Democratic mayoral candidate. David was recruited to Warehouse in Washington DC in October of 2005 where he is currently working with leading democratic operatives to build the only democratic database of every single voting-aged American, which will be used by progressive organisations to improve voter targeting in order to elect democrats. Ultimately, this will be a major asset in the presidential elections of 2008 and beyond.