Therond was previously an exploration and production geoscientist before spending around 25 years in investment banking within the oil and gas sector, covering various roles.
He joins the company on a part-time basis and will primarily assist the company with its investment and acquisition strategy.
“We are delighted to welcome Lionel to ADM as chief financial officer,” said Osamede Okhomina, ADM chief executive.
“Lionel has extensive experience in the oil and gas sector and a deep understanding of what is required when financing and structuring deals, which makes him the perfect fit for the company.
“We look forward to working with Lionel as we execute our growth strategy and build our investment portfolio.”