Bartie has been with Demeter holdings since 2015. From 2015-20 he was country manager of Demeter Ghana Ltd, increasing revenue numbers by over 10x and significantly increasing profitability. In 2020 he was appointed as the Chief Operating Officer of Demeter Holdings ltd. Before joining Demeter holdings, Bartie worked as a business development analyst at Vedanta Resources Ltd and set up the Oil and Gas Africa desk at the Hydrogen Group.