Meet Our Experts
Seasoned Professionals
People who are skilled and experienced in their field—your trusted solution for any challenge.
Tjia Siauw Jan, SE, Ak, SH, CA, BPK, MA
Director
Bambang Siswanto, SE
Consultant
Dr. Tjia Siauw Jan, S.E., Ak., M.A., S.H., M.H
Dr. Tjia Siauw Jan is a senior finance, taxation, accounting, and legal professional with extensive experience spanning corporate finance management, taxation, accounting, and legal advisory.
She holds multidisciplinary academic qualifications in Economics, Professional Accounting, Tax Policy, and Law, including a Doctorate in Law from Universitas Padjadjaran. Her professional background includes senior management positions as Finance Director and General Manager of Accounting, Finance & Tax, as well as long-standing experience as a Tax Counsel.
Her multidisciplinary expertise enables her to provide an integrated perspective across financial management, taxation, accounting, corporate legal matters, and regulatory compliance.
Educational Background
- Doctor of Law (S3)
Faculty of Law, Universitas Padjadjaran, Bandung | 2022 - Master of Law (S2)
Faculty of Law, Universitas Jayabaya, Jakarta | 2020 - Master of Tax Policy (S2)
Faculty of Social and Political Sciences, Universitas Indonesia, Depok | 2012 - Bachelor of Law (S1)
Faculty of Law, Universitas Tama Jagakarsa, Jakarta | 2010 - Professional Accountant Program
Professional Accountant Program, Universitas Trisakti, Jakarta | 2004 - Bachelor of Economics (S1)
Faculty of Economics, Universitas Trisakti, Jakarta | 2002
Professional Experience
- PT Sulindafin
Finance Director | 2018 – Present - PT Sulindamills
Finance Director | 2018 – Present - PT Cipta Solusindo Prima
Tax Counsel / Tax Legal Representative | 2006 – Present - PT Bina Karya Prima, Bekasi, West Java
General Manager – Accounting, Finance & Tax | 2002 – 2006
Professional & Organizational Affiliations
- Indonesian Tax Consultants Association (IKPI)
Member of Special Assignments Department - PERADI – Suara Advokat Indonesia
National Board Management – Commission for Continuing Legal Education
2020 – 2025 - PERADI – Suara Advokat Indonesia
Treasurer General
2025 – 2030
Core Area of Expertise
- Financial Management & Corporate Finance
- Accounting & Financial Reporting
- Taxation & Tax Advisory
- Tax Dispute & Tax Legal Representation
- Corporate Legal Matters
- Tax Policy & Regulatory Compliance
- Financial & Tax Risk Management
- Corporate Governance
- Strategic Financial Planning
Professional Qualifications
-Professional Accounting-
-Tax Policy-
-Law-
-Doctor of Law-
A unique multidisciplinary professional background combining Finance, Accounting, Taxation, and Legal expertise
Bambang Siswanto, SE
Trusted Expertise You Can Rely On
With over 30 years of proven experience, Bambang Siswanto is widely recognized as a trusted authority in taxation, corporate law, and fiscal policy. His reputation is built on a foundation of integrity, precision, and ethical leadership—qualities that have earned him the confidence of clients, colleagues, and institutions alike. Whether advising corporations, representing legal interests, or shaping policy discourse, he brings clarity, professionalism, and unwavering dedication. His thought leadership and public presence can be seen across professional platforms such as Twitter/X, where he shares updates and engages with wider audiences. His involvement in academic research and national legal associations further reflects a deep commitment to transparency, learning, and long-term impact.
Educational Background
- Bachelor of Economics (S1)
Accounting, Trisakti University, Jakarta | 1998 - Diploma in Taxation (D3)
Taxation | 1995
Professional Experience
- Foreign Investment Tax Service Office (KPP Penanaman Modal Asing) |
Tax Auditor | 1995 – 1998
- Foreign Investment Tax Office One (KPP Penanaman Modal Asing Satu) |
Tax Auditor | 1998 – 2000
- Public Company Tax Office (KPP Company Listed on the Stock Exchange) |
Tax Auditor | 2000 – 2007
- Jakarta Special Tax Office (Jakarta Special Tax Office) |
Objection Reviewer | 2007 – 2010
- Directorate of Objections and Appeals |
Objection Reviewer | 2010 – 2014
- PT Cipta Solusindo Prima |
Consultant | 2014 – Present
Educational Background
- 2002 – Trisakti University
Bachelor’s Degree in Economics, Major in Accounting - 2010 – Tama Jagakarsa University
Bachelor’s Degree in Law - 2012 – University of Indonesia (Graduate Program)
Master’s Degree in Social and Political Sciences – Fiscal Policy Concentration
Certifications & Informal Education
- 2006 – Certified Professional Accountant (Akuntan Profesional)
- 2010 – Passed USKP Brevet C (Certified in Advanced Taxation)
- 2010 – Completed Customs Course
- 2013 – Completed PERADI Advocate Training Course (Licensed Lawyer)
- 1992–2001 – Finance & Accounting Manager at PT Jaya Abadi Mulia Kimia
- 2002–2006 – General Manager of Finance & Tax at PT Bina Karya Prima
- 2006–Present – Tax Consultant, Legal Counsel, Director at PT Cipta Solusindo Prima, Managing Partner at CSP Tax Consultant
