Marcel has a B.A. in communications for development from the Université Lummière de Bujumbura. He speaks French, Swahili, Kirundi and Kinyarwanda.
After his university studies, he worked as an intern at Germanic international Organization GTZ, where he worked with consultants to build community development plans for rural communes in Burundi. He later joined Ebenezer Ministry International as project manager of a school building project, where he conducted impact studies through focus groups, SWOT analysis, and community outreach. After he moved to Nashua, NH, he founded African Community of One Greater Nashua and worked as a community organizer.