From June 2018 to July 2020, Sophie was assigned to the Public Information Unit of the UN Integrated Peacebuilding Office in Guinea Bissau (UNIOGBIS) as a Project Manager. Her mission, together with colleagues at UNDP, was to implement a project funded by the Peacebuilding Fund to create enabling conditions for journalists to play a positive role in a democratic society: boosting the media sector in Guinea-Bissau for greater peace.

UN Peacekeeping is one of the largest United Nations partners of the UN Volunteers (UNV) programme. In 2019, more than 2,000 UN Volunteers served with UN Peacekeeping in 17 different missions around the world, contributing to protection and peacebuilding efforts and promoting volunteerism across the United Nations system.