Hosni assumed his current role in 2021. He led the Jamjoom Pharma listing on the Saudi Exchange (Tadawul) in June 2023. The company had a market cap of $2.1 billion as of November 23, 2023. Hosni is expected to inaugurate two new manufacturing facilities in Saudi Arabia and Egypt. He was previously the regional president for Africa and the Middle East at Pfizer and commercial director for Egypt and Sudan at GSK.