Sudirdjo Widjaja serves as The Treasurer of Indonesia Coal Mining Association (APBI-ICMA). He started his professional career as Operational Manager of PT Kita Tumbuh Bersama in 1997. During his employment history, he’s had many experiences in managerial level, especially in the field of marketing, operation, and finance. In his early years, he ever worked as Junior Marketing Manager in PT Panasia Indosyntec. He also worked as Marketing and Managing Director in a private shrimp hatchery in Sumbawa. Sudirdjo has also managed as project manager in PT Kimco Armindo, a mining company operating in East Kalimantan, for almost 3 years. For now, he currently works as Finance Director in PT Adimitra Baratama Nusantara, a fast growing thermal coal producer from East Kalimantan, which is the subsidiary of PT Toba Bara Sejahtra.
Sudirdjo received his bachelor degree in Science Industrial System & Engineering from Georgia Institute of Technology.