UK-listed oil and gas company Afentra—short for African Energy Transition—aims to revitalize mature oil fields with a focus on efficiency. With existing assets in Angola, the company is seeking additional opportunities across West Africa. CFO Anastasia Deulina has served as the group’s finance chief since its inception in 2021. Global Finance: What are the main challenges you’ve faced as CFO? Anastasia Deulina:  The biggest challenge has been the fact that we’re a startup. The three of us—