Areas of practice:  Criminal Law/ White-Collar Crime, Corporate/Commercial Law, Dispute Resolution


Phone: +40 21 202 59 00

Fax: +40 21 223 04 95



Address: 43 Aviatorilor Boulevard, 1st District, Code 011853, Bucharest, Romania

Stefan Diaconescu is a known criminal law practitioner, with over 10 years of legal experience in this field, during which he has provided complex legal assistance and representation service to numerous legal entities and individuals (especially business men and politicians) before criminal investigation authorities and national courts of law, of all levels.

Stefan has achieved remarkable results in high profile projects that included assistance (compliance, regulatory and internal investigations) to companies in order to avoid or prevent criminal prosecution, in matters which have included corruption crimes, economic crimes, aviation law, energy law, intellectual property and public procurement.

Stefan’s accomplishments have lead him to winning the Rising Star award for 2021, awarded by Euromoney’s Legal Media Group, part of IFLR1000, as well as the Top Attorney award in Criminal law at the 2022 Top Lawyers awards organized by Finmedia and Piata Financiara magazine.


Career & Qualifications


  • Postgraduate Diploma in Judicial Career – University of Bucharest (2013);
  • Law school 2012 – Alexandru Ioan Cuza University


  • Experience within Muşat & Asociaţii: 11 years
  • Partner, Muşat & Asociaţii – 2024-to date
  • Managing Associate, Muşat & Asociaţii: 2021-2023.
  • Senior Associate, Muşat & Asociaţii: 2016-2020.
  • Associate, Muşat & Asociaţii: 2013-2016.


  • English, German, Spanish and Romanian

Relevant Experience

Recent relevant mandates include advising/representing:

  • Successfully representing the leading company in the oil refinery business (Romania) in a highly complex criminal case, involving tax evasion, money laundering, asset freezing measures being imposed on the goods and stocks of the company, and with an estimated prejudice in excess of EUR 700,000,000.
  • Representing a Romanian aviation authority in the criminal file investigated by the Prosecutors’ Office attached to the High Court of Cassation and Justice, in relation to an airflight accident which took place in Romania.
  • Assisting and representing an international producer of household goods in a case involving employee’s criminal actions during a strike declared in one of their subsidiaries.
  • Representing the global wiring systems and cable technology leader, in complex a criminal file in front of the criminal investigation authorities, involving also complex settlements of damage claims in excess of EUR 40 million.
  • Providing legal assistance and representation for an important Romanian Bank, in relation to a complex criminal investigation with an estimated prejudice in excess of EUR 70 million.
  • Providing legal assistance and representation for the largest Romanian retailer (affiliate of a leading European commercial corporation), in connection with a complex criminal file arisen from corruption charges in relation to a large commercial and real estate transaction.
  • Assisting and representing the leading player on the Romanian energy and gas market, in various complex criminal files, both in front of the criminal investigation authorities and of the Criminal Courts of Law, involving also complex settlements of damages claims.
  • Assisting and representing the national distributor of MAN trucks and the most important dealer of BMW automobiles, in various complex criminal files in front of the criminal investigation authorities, involving tax evasion.


  • Romanian Bar Association (Admitted 2013)
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