Singtel Group chief executive Chua Sock Koong said in a statement that Ms Bayer Rosmarin brought technology, commercial and management experience from a career across financial services, management consulting and Silicon Valley.
“She will build on the success of Optus that has flourished under Allen’s [Lew] dynamic leadership, particularly as we move into the next phase of 5G-powered growth,” Ms Sock Koong said.
She said Mr Lew’s tenure had been a “standout” and he would be moving into a newly-created role as chief executive of Singtel’s group strategy and business development as well as country officer, Thailand in April. He would also continue as chairman of the executive committee at Singtel’s Thailand associate AIS.
Mr Lew has been chief executive of the telecommunications company since 2014 and has worked at Singtel since 1980, including as chief executive of group digital life and Singapore.
Ms Bayer Rosmarin said in a statement the Australian economy was digitising rapidly putting Optus at an “exciting juncture with 5G on the horizon”.
“I look forward to harnessing and optimising the benefits of these changes for our customers across the country, and working with the passionate people at Optus to drive innovation, deliver great customer service, and power the digital economy with connectivity for all Australians,” she said.
Mr Lew said in a statement he looked forward “to passing the baton” to Ms Bayer Rosmarin.
“Now known for our exceptional network, value and customer service, Optus is primed to take advantage of 5G to achieve a serious growth spurt,” he said.