Jeremy is Chief Executive of Te Rūnanga o Ngāti Awa, an iwi authority representing around 15,000 descendants of Ngāti Awa, whose rohe (tribal area) is in the Eastern Bay of Plenty, Aotearoa/ New Zealand. The Rūnanga has responsibility for progressing the economic, cultural, social, political and environmental interests of Ngāti Awa. It was established in its current form in 2005 at the completion of Ngāti Awa's Treaty settlement.

Jeremy has been Chief Executive since 2006 and was involved in the establishment of the current Rūnanga structure. Prior to that he had a range of roles in public and private sectors, including the development of a new governance model for Maori, as a communications consultant and working on Y2K in London's investment banking industry.