1. Project Cost Control ( PT Pertamina Training and Consulting) 2013 - 2015
1. Internal Auditor at PT Arun NGL (A Subsidiary Company of ExxonMobil and Jilco) 1990 - 2014
2. Budget, Accounting and Financial Information System (A Subsidiary Company of ExxonMobil and Jilco) 2009 - 2012