Legal career Sing'Oei legal career has had him working on the rights of underprivileged, marginalised and minorities in Kenya. He is the co-founder and former executive director of
The Center for Minority Rights Development, based in Nairobi. He co-litigated the
Endorois case before the
African Commission on Human and Peoples’ Rights, a case that he won considering he represented the Endorois community. The case challenged the government's eviction of the
Endorois from their ancestral lands around
Lake Bogoria, and in 2010 the Commission found that Kenya had violated several rights under the African Charter. Sing’Oei's work on the case helped draw attention to gaps in Kenya's legal protections for minorities and informed constitutional and land rights reforms. Sing’Oei also represented
Samburu families in a land rights case involving alleged forced eviction of hundreds of residents from land linked to former Kenyan president
Daniel arap Moi. He previously served as Litigation Director at the Katiba Institute and as a Rule of Law Specialist with the
United States Agency for International Development.
Public service career Sing'Oei was a member of the task force on formulation of community land and evictions and resettlement bills in 2012. He served as the Legal Advisor and Head of Legislative and Intergovernmental Liaison at the Office of the Deputy President of Kenya, from 2013 to 2022. In 2022 after
William Ruto won the presidential elections, he was nominated and later approved as the Principal Secretary, State Department of Foreign Affairs. ,
IAEA Director-General, meeting with Dr. A. Korir Sing'Oei during his official visit to the Agency headquarters in
Vienna, Austria, 18 June 2025. == Publications ==