Joined Medco Group in 1997. Took MBA Core Program at Thunderbird University, Arizona, USA in 1984 and received MSc from Colorado School of Mines, USA in 1988. Graduated from Bandung Institute of Technology in Geological Engineering in 1981. Joined Medco Energy as Vice President in 1997 and became a Director of the Company from 1998 to 2001. Appointed as Chief Executive Officer of PT Medco Energy International in 2001 and Presently he is also serving as Director and Commissioner in several of Medco's subsidiaries.