Dr Mehlomakulu’s career started at Sasol Technology before joining the National Department of Science and Technology in various management roles. Her external industry portfolios include being a non-executive Director of SAPPI Limited and Yokogawa South Africa. Her past directorships include PBMR (Pty) Ltd, Nuclear Energy Corporation of South Africa (NECSA), Eskom Holdings SOC (Ltd), the Technology Innovation Agency (TIA), being the Deputy Chair of Unisa Council, a member of Council of the International Standards Organisation (ISO, Geneva), as well as the CEO of the South African Bureau of Standards (SABS) and a Director of its subsidiaries. She was appointed to the Hulamin board on 1 November 2016.