Tumi is a seasoned business leader with over 25 years of experience in technology, telecommunications, and strategy. Currently, she serves as Chief Enterprise Business Officer at MTN SA, leading the organisation's enterprise client strategy and growth. Prior to this role, Tumi was at MTN Group for 5 years and was the Chief Group Enterprise Officer between 2020-2023, overseeing Group's Enterprise client segment teams and the overall strategy for enterprise customers across 22 countries in Africa and Middle East.