Suliman joined DHL Express in 1977 and assumed his current position in 2011. He leads operations in 19 countries. In 2021, the company had over 5,700 people in MENA and recorded revenues of $1.5 billion in the Middle East and Africa. The company also established the DHL MEA Innovation Center, an interactive showroom, in 2021. Suliman was previously the country manager for DHL Express Saudi Arabia and DHL International in Bahrain.