Marubini is a former investment banker and admitted attorney with extensive deal-making experience in the energy sector in South Africa and elsewhere on the continent. After serving at Werksmans as well as Sonnenberg Hoffmann Galombik and AloeCap Corporate Advisors, Marubini joined Nedbank Capital as senior principal in the Investment Banking Division. Marubini founded Medupi Capital, which formed Hulisani in partnership with Mazi Capital. Medupi Capital is a shareholder in various energy companies and focuses on collaborative principal investments and advisory in the energy sector. Since Hulisani’s listing in April 2016, he has served as chief investment officer and recently became chief executive officer.