His appointments to various leading positions in the financial sphere include his role as a member of executive management at a Swiss financial group. From 2012 to 2022, he was Head of the Asset Management and Markets Division and a member of the Executive Board of the Financial Market Authority (FMA) Liechtenstein. The Asset Management and Markets division supervises asset management companies, funds and their management companies, approves bond prospectuses and is responsible for market-related supervisory issues. Marcel was a member of various expert groups in the fields of financial market law and regulation (including the ESMA Board of Supervisors, the European Regional Committee of IOSCO and the European Expert Group MSEG-SF) for over ten years.
Marcel joined in August 2022 a Global Crypto Asset Exchange as the Head of Regulatory Strategy (Europe). Marcel also gives lectures and seminars in the areas of business law, regulation and compliance and regularly publishes on these topics.