He is founder and Managing Partner of JJS. He is a member of Indonesian Institute of Certified Public Accountants (IAPI), a member of Institute of Indonesia Chartered Accountants (IAI). He has been licensed with Capital Market, Banking, and Non-Bank Financial Industry (OJK) and certified with The Audit Board of Republic of Indonesia (BPK) and Certified Financial Investigator (CFI).

He has over 40 years of experience in auditing, accounting, taxation and advisory services, and has extensive assurance experiences in public listing company, manufacturing, trading, construction, plantation, non-profit organization, mining, oil and gas, property, hotel management, professional services and other sectors.