Theo is a leader in Namibia's banking community having served as both the managing director of Standard Bank Namibia, and the holding company, Standard Bank Namibia Holdings for more than six years. He also served as Managing Director of Telecom Namibia, and as CEO of Namibia Post and Telecom Holdings, responsible for the investment management and property portfolios. Theo is a highly sought-after expert and offers opinion on several investment and financing projects in Namibia and the SADC region.

He has held or currently holds directorships with companies including but not limited to, Trustco, NIP, Omnitel, Plastic Packaging, Liberty Life, MTC, First National Bank, Sanlam Unit Trust, Namport and Stanlib. Theo holds an MBA in Accounting and Finance from Baruch College of the City University of New York and a Bachelor of Science degree in accounting. He has participated in several executive management programs including the INSEAD France Senior Executive Program, and the International Program for Telecommunications Management in Sweden.