Prior to coming to Promontory, Hueston supervised derivatives trading activities as a Bank Examiner within the Financial Markets Group at the Office of the Comptroller of the Currency. He also oversaw the expansion of an enterprise-risk framework as a Director of the Model Oversight Group at Freddie Mac. Hueston also worked in the merchant energy sector, serving as an Associate in corporate finance at Reliant Energy, and as a senior natural gas markets analyst and a natural gas trader at PG&E National Energy Group.