Marine Senn (-Botfield) obtained a Bachelor of Laws from the University of Fribourg in 2013 and a Master of Laws from the Faculty of Business and Economics at the University of Lausanne. During and after her studies, she worked as a court clerk. ad hoc before the District Courts of Lausanne and Eastern Vaudois. She completed her legal internship in the canton of Vaud. In 2021, she obtained her lawyer's license and then practiced at the bar in the canton of Vaud. She joined the Bourg 8 firm as a partner in 2024.