Since January 2017, Muriel works with the international advocacy group Avaaz.org. Furthermore she is a board member of Wikimedia CH – the Swiss Non Profit organisation which supports the projects of the Wikimedia Foundation, such as Wikipedia. In 2018, she co-founded the initiative “Women for Wikipedia” with Patrizia Laeri (SRF) and Katja Murmann (Ringier).
In the past, Muriel worked as Executive Director at Opendata.ch, the Swiss Chapter of Open Knowledge International and as Community & Outreach Manager at Wikimedia CH. Prior to this, she was part of the Education Team at Apple Switzerland and oversaw several projects with particular focus on implementing the education content strategy across iBookstore, App Store and iTunes University. Before working for Apple, Muriel assisted the Chancellor and Vice-President at the University of Lüneburg in Germany.