Graduate assistant at the chair of Prof. Dr. Dr. h.c. mult. Winfried Hassemer (Chair of Criminal and Criminal Procedure Law)
Legal clerkship, at, among others, German University of Administrative Sciences, Speyer, Max Planck Institute for foreign and international criminal law, Freiburg
Lawyer since 2006, Knierim & Kollegen (Associate), Dierlamm Lawyers (Partner), Feigen - Graf Lawyers (Partner), Rettenmaier & Adick (Partner), Rettenmaier Frankfurt (Partner)
Companies
BMW UK (Int. Intern), BMW of North America LLC (Int. Intern), MAN SE (Secondment Compliance Division)
Publications
Felix Rettenmaier regularly publishes academic articles in professional journals and standard works, including the “Manual of the Defence Lawyer” (Dahs), “Manual White-Collar And Tax Criminal Law” (Wabnitz/Janovsky/Schmitt), “Banking Criminal Law” (Schork/Groß), “Fiscal Criminal Law” (Adick/Bülte), Healthcare Compliance (Geiger), “Commentary on the Criminal Code” (Matt/Renzikowski), “Commentary on the Code of Criminal Procedure” (Radtke/Hohmann).
Ombudsperson at, amongst others, the German Olympic Sport Confederation, German Athletics Association
Lecturer for White-Collar criminal law at the German Federal Office of Criminal Investigation (BKA)
REFERENCES
JUVE Handbook 2009 – 2025 (excerpts)
"brilliant analyst"
"competent, quick, solution oriented"
"quick-witted, very pleasant, skilled"
"good and committed team player"
"highly professional, efficient and successful"
Chambers & Partners
Felix Rettenmaier is listed by Chambers & Partners as one of the leading lawyers in the field of “White-Collar-Crime: Defense Counsel”.
Legal500 2025
Legal500 has recognized Felix Rettenmaier as one of Germany's strongest partners in the practice area “Advice to Individuals”.
Handelsblatt / Best Lawyers 2025
Listed as one of the best German lawyers for white-collar crime.
Leaders League 2025
Leaders League lists Felix Rettenmaier as a recommended lawyer in the field of White Collar Crime (Business Criminal Law / Dispute Resolution).
F.A.Z. Institute 2026
Listed as a top lawyer 2026 in the field of business and tax criminal law.
WiWO – Top Law Firms 2025
Awarded in the category Germany’s best lawyers in criminal tax law
Law Firms in Germany 2013
"has earned a superb reputation as a competent criminal defense lawyer in white-collar criminal law."