Bachelor in Political Science and Master in Management Science, Muriel began her career as Attaché in the area of Training activity within the Luxembourg Chamber of Commerce.

Today, she is a member of management within the House of Training which is the continuing professional training organisation created in 2015 by the Chamber of Commerce and the Association of Banks and Bankers Luxembourg (ABBL). She is also Financial Director of ISEC, Higher Institute of Economy, founded in 2015 by the Luxembourg employers' associations and approved as a higher education institute specialised by the Ministry of Higher Education and Research.