Sonia began her career at Agence France Presse (AFP), the international news agency, in the Paris headquarters. In January 1996, she joined the AFP bureau in London as a foreign correspondent. During that time, she covered the three general elections won by Tony Blair, the Northern Irish Peace Process and much more. From 2002, she went on to work freelance for several publications, radio and TV, including Le Figaro, and Politique Internationale. For the last ten years, Sonia has been the UK and Ireland correspondent for Liberation. She has co-authored Londres Out of The Box, published in 2017 by Les Arènes.