Khalil joined Markaz in 1989 and assumed his current position in 2020. As of December 2024, Markaz had $4.6 billion in assets under management, an increase of 16% compared to 2023, and recorded total revenues of $66 million. In November 2024, Markaz launched an advanced digital investment platform in collaboration with Hesabe to empower Markaz clients to periodically expand their investments in Markaz investment funds.