Sandiaga is the founding partner and CEO of Saratoga Capital, a private equity firm he co-founded in 1998. Saratoga Capital focuses its investments in natural resources and infrastructure in Indonesia and Southeast Asia. He currently holds key positions among others at PT. Adaro Energy Tbk, one of the largest integrated coal companies in Indonesia and PT Tower Bersama Infrastructure Group, one of the largest independent telecommunication tower providers. He also co-founded a boutique investment firm, PT Recapital Advisors in 1997.