Njoki started her career in the hospitality industry where she worked for Lonrho Hotels, Alliance Hotels, Walt Disney World Resort and The Ritz-Carlton, Atlanta. She later worked for the Mayor’s Office of International Relations, Atlanta. Moving back to Kenya, she founded Tukio Africa Conference and Event Services. Her clients included Microsoft, East African Breweries, Bookside Dairy and Martin Luther King III.
She later took a drastic turn in her career, shifting to Social Enterprise. She founded Karjee Industries, a company that manufactured low cost sanitary pads. As a result of manufacturing sanitary pads, she received numerous requests to donate them to various organizations. She then founded Zuri Dada Sanitary Pad Bank in Kibera where school girls have access to free sanitary pads and mentorship.
She is a recipient of the Presidential Order of Service, Uzalendo Award, in recognition of the exemplary service during Covid -19 pandemic, and the Phoenix Award, for her significant contribution to the City of Atlanta. She is the Chairperson of Greencard Mtaani, an organization that nurtures, educates, protects and empowers children through sport in Kibera. She is also a Member of Rotary Club of Lavington, Nairobi, and founder of Njoki Kariuki Foundation.
Njoki grows tea for the export market and is currently setting up an Industrial Bakery. She holds a Bachelor of Science degree in Hospitality and Business Management from Morris Brown College, USA. She is a Mother of three daughters.