Gotianun made a living from salvaging ships at the end of the Second World War. Several years later, he became involved in an automobile dealership. Later still, in 1955, he founded Filinvest Development Corporation a company which became engaged in real estate in 1967. Gotaniun and his wife, Mercedes, temporarily retired from Business activities in the 1980s but returned a short time later, with a plan to make improvements to the corporation. He is among those honored at the BizNewAsia Real Estate Who is Who (BREW) awards.