Meet Our
Leadership Team
A dedicated group of professionals, advocates, and survivors committed to one mission: protecting children in South Sudan.
Driving Change from the Top
Our executive team brings decades of experience in humanitarian work, child protection, and organizational leadership.
Gatkuoth Liah Diu
Founder & Executive Director
Former child soldier turned humanitarian leader. Founded ACSS to give every child the future he was nearly denied.
Lul Gatwech
Programs Director
Led dedicated local aid teams to maximize community impact and relief operations, Oversees all ACSS program areas.
Regina Salam
Finance Director
Certified accountant ensuring donations reach children directly through rigorous financial management and transparency.
Nyachangkuoth Gatleel
Head of Child Protection
Social worker and child rights advocate with deep roots in South Sudanese communities and 2 years of field experience.
Peter Riek
Head of Education
Education specialist with experience in accelerated learning programs for conflict-affected children across South Sudan.
Sarah Nyanwut
Head of Mental Health
Clinical psychologist specializing in trauma-informed care and psychosocial support for children affected by conflict.
Muon Gatkuoth
Head of Nutrition
Public health nutritionist with expertise in emergency food security and malnutrition treatment programs.
Loro Bol
Head of Reintegration
Family tracing and reunification specialist with experience in cross-border family mediation and youth vocational training.
Our Advisors
We are guided by a distinguished advisory board of experts in child rights, humanitarian law, and development.
David G. Reath
Child Rights Expert
Former UNICEF child protection specialist with 20+ years of experience in conflict zones across East Africa.
Nyabana David Reath
Humanitarian Law Expert
International humanitarian lawyer specializing in child protection in armed conflict and transitional justice.
Dr. Amina Hassan
Mental Health Specialist
Leading psychologist in trauma recovery for children affected by armed conflict and displacement in the Horn of Africa.