Bishai joined Orascom in 1985. The company employs 61,757 people in over 10 countries. In 2021, Orascom’s consolidated backlog grew 12% to $6.1 billion, and it recorded revenues of $3.5 billion. It has projects across Egypt and the U.S. In May 2022, Orascom increased its role in the development of Egypt’s new high-speed rail system. Together with Siemens Mobility and Arab Contractors, it entered into a contract with the National Authority for Tunnels to expand the network to 2,000 km. Orascom Construction’s total share of the project is worth $1.8 billion. Bishai also sits on the board of the BESIX Group.