Maximilien is an all‑round litigator with a particular focus on criminal litigation. In recent years, he has advised and represented both companies and individuals in a wide range of matters, including attachment and asset‑recovery proceedings, ex parte and summary proceedings related to mergers and acquisitions, as well as numerous criminal investigations and proceedings involving market abuse, misuse of trust, misuse of corporate assets, bribery, fraud, tax fraud, fraudulent organization of insolvency, insolvency‑related offences, forgery, money laundering, …

Before joining Janson, Maximilien worked for one of Belgium’s twenty attorneys admitted to the Supreme Court, as well as at a magic circle law firm.

Alongside his professional practice, he serves as a Teaching Assistant in criminal procedure law at the Faculty of Law of the Vrije Universiteit Brussel. He is the author of several publications on white‑collar crime and procedural law. His thesis on misuse of corporate assets was awarded both the Algemene Praktische Rechtsverzameling Prize (best master’s thesis of the Vrije Universiteit Brussel) and the Nullum Crimen Prize (best master’s thesis on a criminal‑law‑related topic among Dutch‑speaking universities).

Maximilien is fluent in French, Dutch, and English.

• Advising a life insurance company in a mass action and related criminal proceedings arising from a Ponzi scheme involving Branch 23 insurance products.

• Advising an investment bank in connection with frozen Russian assets held at Euroclear.

• Advising a shipping company in the context of criminal and regulatory investigations into the alleged transport of strategic and military goods.

• Advising a listed former global industrial company following regulatory action by the Financial Services and Markets Authority and related criminal investigations for alleged market manipulation.

• Advising the world’s leading online sports betting and gaming operator in matters concerning the alleged illegal offer of online gambling and poker services in Belgium, Austria, and Malta, as well as related attachment proceedings targeting .eu domain names.

• Advising a high‑net‑worth individual in criminal proceedings for aggravated tax fraud.

• Advising numerous companies and individuals in Supreme Court proceedings concerning criminal law, procedural law, and business law.

Education :

Master of Laws, Magna cum laude (Vrije Universiteit Brussel, 2022)

Bar : Brussels

• Teaching assistant in criminal procedure law at the Faculty of Law of the Vrije Universiteit Brussel (since 2024).

• Affiliated researcher in the Criminal Law Department at the Faculty of Law of the Vrije Universiteit Brussel (since 2023).

• M. ARNOLDY, “Vertrouwen is brozer dan diamant: misbruik van vertrouwen bij een koopovereenkomst met eigendomsvoorbehoud”, Revue de Droit Commercial Belge / Tijdschrift voor Belgisch handelsrecht, 2025/8, 1038-1055.

• M. ARNOLDY, “Misbruik van vennootschapsgoederen: de relatieve in concreto beoordeling van het betekenisvol nadeel van de vermogensbelangen van de rechtspersoon en van die van zijn abstracte schuldeisers of vennoten” (noot onder Cass. 5 april 2023), Nullum Crimen 2024/3, 164-170.

• F. MOURLON BEERNAERT et M. ARNOLDY, “La préparation d’une procédure en cassation devant le juge de fond” in B. MAES, F. MOURLON BEERNAERT et S. SONCK (dir.), Les pourvois en cassation, Bruxelles, Larcier, 2024, 69-108.

• M. ARNOLDY, “Abus de confiance, abus de biens sociaux et escroquerie : un état des lieux à l’aune de la réforme du droit pénal” in E. ROGER FRANCE (dir.), Actualités en droit pénal des affaires, Bruxelles, Larcier, 2024, 7-59.

• M. ARNOLDY, “Misbruik van de goederen of van het krediet van de rechtspersoon: een kritische en rechtsvergelijkende analyse de lege lata en de lege ferenda in het licht van de hervorming van het Strafwetboek”, Nullum CrimenDossier 2023, 1-54.

• F. MOURLON BEERNAERT et M. ARNOLDY, “Société simple (maatschap), contrat de service, patrimoine d’affectation indivis et liquidation. Quelques éclaircissements.”, Revue pratique des sociétés / Tijdschrift voor Rechtspersoon en Vennootschap 2022/3, 188-195.