WSA Co was established in August 2017 to build Western Sydney Airport. Paul O'Sullivan has been the Chairman of Optus since October 2014. He was previously CEO of Singtel Group Consumer from 2012–2014 where he was responsible for operations in both Singapore and Australia, as well as Singtel investments.
Paul previously served as CEO of Optus from September 2004 to March 2012 and prior to this held a range of senior positions within Optus. He currently serves as a Director on several Boards including Coca-Cola Amatil, Healthscope, the NDIA and HOOQ.