As Commissioner, Djoko Ramiadji holds concurrent positions as Vice President Commissioner of PT Mustika Princess Hotel (1992–now), President Director of PT Mustika Ratu Investama (2018–now), and President Director of PT Mustika Ratu Center, which manages Graha Mustika Ratu (since 2019). He previously served as President Commissioner of PT Mustika Ratu, Tbk from 1990 to 2001, during which he established his career as property and infrastructure entrepreneur and developer in Indonesia and overseas (since 1992). Djoko Ramiadji earned his Bachelor of Science in Engineering with distinction (Cum Laude) from San Fransisco State University, California, USA, and Master of Science in Civil Engineering with specialization in Structure Engineering, from Stanford University, California, USA