Dirk Oldenburg´s career as attorney-at-law comprises:
- 1985 - 1988 Associate with the international Frankfurt Firm Puender, Volhard, Weber & Axster (today Cifford Chance)
- 1989 - 1998 Equity Partner Pünder, Volhard, Weber & Axster with main focus on M&A, Litigation, Corporate Law und Restructuring/Insolvency