Currently, Caeser is the executive director, national sales at Telstra Enterprise and Government.
She will replace Kate McKenzie, who was appointed group managing director, strategic marketing for the telco.
Sol Trujillo, CEO of Telstra, said Caesar's consistent top-level performance and her background overseeing large strategic customer relationships were perfect preparation for the Telstra Wholesale role.
Caesar said she was delighted to take on the role of GMD, Telstra Wholesale and is looking forward to taking her place on the CEO leadership team.
"Telstra Wholesale is one of the most exciting parts of the company, and I am very excited to have the opportunity to lead the division at an important time in its history," she said.
"Caesar joined Telstra in 2006 as executive director, customer management teams and was soon given responsibility to manage the relationships with Telstra's 1500 enterprise and government customers nationally.
Before joining Telstra, Caesar spent 20 years at IBM.
During her time with the vendor she started as a sales representative at IBM Australia and rose to be vice president of IBM Asia Pacific's Intel Server division.
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