Al Mamari started his career with Omantel in 1995. He aided the company’s full legal merger with Oman Mobile and its acquisition of 21.9% in Zain Group. Al Mamari also serves on the boards of Zain Group, the Oman Corporate Governance & Sustainability Centre, and the Al Amal Fund. During the pandemic, Omantel procured COVID-19 test equipment and provided technical support to the call centre of the Sultanate’s Ministry of Health. The company also provided healthcare workers with 3,000 free local minutes and 30GB free data.