Al Mamari has been in his current position since June 2014, having first joined Omantel as vice president in 2009. In March 2024, Omantel announced a collaboration with Amazon Web Services to build a Cloud Center of Excellence to support Omani organizations migrating to the cloud. In Q1 2024, the company recorded $1.9 billion in revenues and $105.6 million in net profit. Al Mameri is also a board member of the Zain Group and the Oman Center for Governance and Sustainability.