Law studies in Gießen
Academic assistant at the chair of Prof. Dr. Gropp (Chair of Criminal Law, Criminal Procedure Law and Comparative Ciminal Law) Gießen (2014)
Research assistant at Freshfields Bruckhaus Deringer LLP, Frankfurt (2015)
Legal clerkship at, among others, Freshfields Bruckhaus Deringer LLP, Frankfurt, Rettenmaier & Adick
Lawyer since 2017, Rettenmaier & Adick (Associate), Rettenmaier Frankfurt (Associate)
REFERENCES
Legal500 2025
Legal500 recommends Tillmann Gessert in the field of White Collar Crime – Advice to Individuals.
Leaders League 2025
Leaders League lists Tillmann Gessert as a recommended lawyer in the field of White Collar Crime (Business Criminal Law / Dispute Resolution).
Handelsblatt / Best Lawyers 2023, 2024 and 2025
Listed as Ones To Watch for White Collar Crime, Corporate Governance & Compliance and Criminal Tax Law.
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.
Rising Stars Expert Guide 2022
Named as Rising Star in White Collar Crime by the Law Media Group Expert Guide.