Mr. Ruberu earned a Bachelor of Petroleum Engineering degree from the University of New South Wales. He joined ExxonMobil in 1995 as a Subsurface and Drilling Engineer for Esso Australia.
After several engineering assignments for Esso Australia and Mobil North Sea, Mr. Ruberu was assigned to ExxonMobil Production Company in Houston to work as a Planning Advisor in 2007. He then held several managerial positions in ExxonMobil Production Company and ExxonMobil Development Company in Houston.
In 2014, he moved to Indonesia to work as Operations Technical Manager based in Jakarta.