This action research study investigates the efficacy of integrating indigenous conflict resolution practices with formal peacebuilding frameworks in post-civil war South Sudan. Conducted in partnership with local peace committees in Central Equatoria State, the research employs iterative cycles of planning, action, observation, and reflection to co-design and implement a hybrid mediation model. The study presents concrete evidence on how participatory methodologies can enhance local ownership of peace processes, reduce inter-communal violence, and address structural barriers to women's inclusion. The findings contribute to debates on decolonising peace studies and offer practical insights for policymakers seeking to ground national peace agreements in community-level realities.