Marisa began her career as a lawyer in Criminal and Civil Law in 1994, co-founding the G&M Law Firm in Barcelona. She was also a Public Defender at the Illustrious Bar Association of Sabadell in Criminal Law and Juvenile Criminal Law. In 1999 she began her career in Commercial Law. After residing for a few years in London, where she specialized in International Commercial Law and Competition Law, she coordinated the Commercial Department of the M&S Law Firm in Barcelona and was Head of the Commercial Department of EMB Lawyers, both based in Barcelona.

In 2013 she founded the Firm VARIS ADVOCATS, in Barcelona. Marisa joined FLI in June 2013 and is responsible for the Spanish and LATAM market. Her role involves project management, communications, public relations, client and business development. Her role also covers international strategy and market research. She is a published author in Spanish Legal Mahazine, Abogacía & Empresa, where she bylined the article European Competition Law versus Non-Collusive Oligopolies.