Participatory development practitioner and collaborative learning designer and facilitator, with experience in using qualitative and participatory methods in development research; facilitating participatory action research; designing capacity development programmes, conducting participatory evaluation and impact assessments of development interventions; youth development and participation programming; and youth policies analysis. Throughout thirteen (2007 - 2019) years of experience, Yassein has collaborated with multiple national, regional and international organizations in areas of child rights, adolescents development, youth empowerment, youth organizing, civic leadership, social accountability and gender equality across MENA countries. In early 2018, Yassein has co-founded Collective Routes (LLC); an enquiry-driven collective, committed to researching existing approaches, experimenting new practices and producing grounded knowledge in social change.