Her foundation as a practitioner was laid at the Atlanta Regional Commission (ARC) which is the regional planning and investment advisory agency for the 10-county Atlanta metropolitan area. In addition to coordinating public-private partnership projects, she provided advisory and technical support services to local authorities through the Community Choices Program, Livable Cities Initiative. In her role, she developed model environmental management policies, economic transformation strategies and urban development ordinances which were formally adopted as comprehensive development plans.
Njeri currently serves as Urban Planning and Development Advisor to Property Development and Management Ltd (PDM), an affiliate of the Aga Khan Development Network. At PDM she is responsible for developing sustainable plans and strategies for the organizations property investment, development and management portfolio in the greater East African region.
She is also an Executive Director and co-convenor of the Naipolitans Forum. The organization is comprised of urban enthusiasts, residents and professionals trying to figure out how, when, where, and what can be done to actualize livable urban spaces. In addition to converging actionable experiences and ideas, the Naipolitans platform provides that neutral space necessary to host conversations about urban-shaping initiatives taking place across Nairobi and around the world.
Prior to her entry into private practice, Njeri was CEO of Kenya Property Developers Association (KPDA) which is the representative body of the residential, commercial and industrial property development sector in Kenya. She is a graduate member of the Town Planners Chapter, Architectural Association of Kenya (AAK) and participated in the ISOCARP Young Professionals Programme (YPP) workshops in Nairobi, Kenya 2010 and Wuhan, China 2011.