Marianne Kent-Stoll earned her B.A. in English from the University of California, Santa Cruz, and her M.A. in English from The Pennsylvania State University. While in graduate school she published poetry in notable journals. She has worked in education for thirty-eight years, eighteen of them as an administrator. She served as  Vice President, Educational Programs and  Head of School at Idyllwild Arts Academy, Southern California’s internationally acclaimed arts high school, where she has made the same commitment to social justice and equity that has driven her work with Karimu. Idyllwild Arts programs that hold special meaning for her include Art in Society, which engages young artists in efforts to address social crises, and the partnership she has forged with a handful of schools on the Pine Ridge Indian Reservation, in South Dakota, home of the materially poor but culturally rich Oglala Lakota people. When she was eight, the film Born Free inspired her dream of visiting Africa, which she clung to for forty years before visiting Tanzania on a vacation that became a vocation. She has now visited Tanzania many times. She is driven by her admiration of the local community, especially its commitment to improving their lives and the lives of their children. Marianne devotes most of her volunteer time to fundraising, strategy, communication, and multiple annual trips to the region.

Daniel Amma has been involved with Karimu from the beginning. He came to Ufani Primary School as a teacher in 2005 and played a pivotal role in consulting on the improvements that Karimu brought to the school. Financial assistance by Karimu helped him earn his Bachelor’s degree in education in 2014, and two years later he was appointed Ufani’s Head Teacher. Only months after that, however, he was promoted to serve as Education Officer of Secheda Ward, bordering Ayalagaya Ward, where Daniel still lives with his wife, Victoria, and their son and daughter. Recently, he became the Education Officer of Dareda Mission Ward - the most important ward within Babati District. Integrity, dedication to the well-being of the community, and calm analytic intelligence make Daniel the most trusted local advisor to Karimu’s work. Since April 2018, Mr. Amma has been a member of the Karimu Tanzania board since 2019 and became chair of the board in 2020.

Yasinta grew up in Ayalagaya ward attending primary and secondary school in Dareda Kati. She studied at Singachini teacher's college in the  Kilimanjaro region and also the Open University of Tanzania where she received her diploma in primary teachers education. She has worked as a teacher of academic studies, English, and Swahili at Dareda Kati Primary School and at Arri Primary School and is currently the head of Arri Primary School. She joined the Karimu Tanzania board in 2021.

Veronika is a midwife and respected leader within the communities of Ayalagaya and Arri. In addition to being a mother and farmer, she has received education in agriculture practices, health training, community development, and savings group and federation best practices. She has served in many leadership positions within the community including being elected as a village representative, district leader of the Tanzanian Women’s Union, chairperson of the catholic church women's group, chairperson of the midwives association,  a member of the Ayalagaya water committee, leader of a green beans farmer’s group, chairperson of her savings group, and is currently serving as the first chairperson of the first savings group federation in Ayalagaya Ward. She joined the Karimu board in 2018.

Raifa received her teaching diploma from Klerruu Teachers College. She taught biology and chemistry at JJ Mungai Secondary School and at Luhololo Secondary School and served as the disciplinary mistress at the latter. She and her spouse transferred to Babati district in 2014 where she teaches at Ayalagaya Secondary School and serves as the disciplinary mistress and matron of the girls hostel. She also currently works as the senior head of the health department. She joined the Karimu Tanzania board in 2021 and currently serves as secretary.

Yohana is the Manyara Regional Coordinator for the Manyara Community Development Organization. He holds a Bachelor's Degree in Sociology and has practical experience in working with underserved populations. His professional career is rooted in the belief that human rights is a principle of everything and that all voices should be heard through participatory decision making. Yohana oversees the education, water sanitation and hygiene programs and is also a qualified Lead Coach certified by the Street Business School from Uganda. When needed Yohana works closely with teams of international volunteers. He is currently a board member for KARIMU TANZANIA and Frederick Sumaye Secondary School in Babati, and member of the committee of Mutuka health center.

Shau comes from one of the poorest backgrounds in Africa, with parents and relatives who had no education. He broke the cycle against all odds, obtaining his Bachelor’s degree in Arts and Education from Ruaha Catholic University, Tanzania, in 2015. After graduation, he returned to Dareda Kati village, his hometown, and held several leadership positions, including Youth Chairperson and member of the Youth Council at Babati District. Shau was also a volunteer teacher at Bacho Primary School until he joined Karimu International Help Foundation in 2017. He quickly expanded his responsibilities, becoming regional manager in April 2019 and regional director in October 2022. Shau oversees all Karimu projects and operations in Tanzania and leads a Karimu staff of 8 employees to ensure the organization achieves its goal of eradicating poverty. He is currently in discussions with Tanzanian ministers and the governor of the state of Manyara to plan the expansion of Karimu’s operations in his country. Shau also graduated from Stanford University’s Executive Program, further enhancing his leadership skills and strategic vision.

Grace has a bachelor’s degree in Computer Science from Harvard University and a master’s degree in Social Innovation from the University of Cambridge. She was a Product Manager at Google for nearly two decades, where she worked on products such as Google Search, Gmail, and Google Calendar. Prior to Google, she worked as a Program Manager at Microsoft. She currently serves on the Board of HURIDOCS, a nonprofit that supports human rights groups with technology to help them create positive change in the world. Grace joined the volunteer team at Karimu in 2023 after visiting Tanzania with her children on Karimu’s first volunteer trip for families. She consults on projects in the health care interventions area.

Eduardo has bachelor's degrees in Computer Science (UNICAMP) and Marketing (ESPM-SP), with a postgraduate study in Digital Marketing (FECAP-SP) and is a Stanford Alumni from the Stanford Executive Program in 2016. After twenty-six years working as an entrepreneur and executive, Eduardo decided to stop and re-think life. He took time to walk the Camino de Santiago, run a marathon, and become a more dedicated father and husband. He decided to open an online school for Entrepreneurs (Empower Business School) and join Karimu as Chief Marketing Officer so that he could help spread the story of Karimu and expand its capacity to eliminate poverty.

In 2006 Eduardo founded Movile, a high-technology company for marketing solutions wherein he looked for good mobile marketing technologies around the world and brought them to Brazilian marketing. In November 2008, Compera nTime made Movile's acquisition and managed all mobile marketing business in the company. Since May of 2011, Eduardo started as an Innovation Manager, working on projects for Smartphones and Tablets using HTML5, Android, and iOS platforms. After that, Eduardo moved to the US to start his operations in Silicon Valley where he focused on revenues and acquiring users to our Smartphones & Internet Business area. Eduardo Co-created PlayKids, the top-grossing app for kids globally in 2013 and 2014. Eduardo currently lives in Miami with his wife and two children. He is enthusiastic about applying his expertise and skills toward helping to eliminate poverty in the communities that Karimu serves.

Klaus is a Sustainability, Data & AI Enthusiast working for IBM. He is passionate about working with customers to turn their sustainability ambitions into action using the power of data & AI.

His deep technical knowledge and strong business acumen have inspired many customers and brought several products and innovative features to the market.  Klaus has spoken at various industry events and conferences including O'Reilly Artificial Intelligence, IBM Think and countless Meetups & User Groups in addition to being a frequent guest lecturer at the Organisations design master program at the University of Nurtingen-Geislingen (HfWU), Germany.

His other key interests include leadership, people management, and mentorship. He believes that the focus on growth and development of teams creates highly motivated environments that thrive for excellence.

All that said, he remains puzzled that in our times we have yet to eliminate poverty and hunger or provide basic human needs like water and education to everyone . The desire to address these issues, along with his long time friendship with Nelson & Claudia and enthusiastic conversations with Marianne and Don led Klaus to help and contribute to the ambitious goals of Karimu.

Égo Obi is a dynamic Leader, Mentor, and seasoned Technology Strategist dedicated to leveraging technology for global impact and practical digital transformation. She holds a doctorate in AI Ethics. Over the past 25 years, she has led numerous technology innovation initiatives across various industry sectors, managing global teams on six continents. For the last 20 years, she has focused on developing technology integration strategies for mergers and acquisitions, spearheading global internet infrastructure solutions in emerging markets, and developing regional technology strategies at Google. Égo became involved in Karimu in 2018. In 2019, she joined the Karimu Leadership Team and was the global lead for the Sanitation program from 2019 to 2021. Since joining Karimu, she has visited Tanzania several times.

Marta has a master’s degree in Psychology.  She has extensive experience managing global projects, having worked as a Program Manager at Google, where she led complex initiatives within the Street View product portfolio. She is skilled in optimizing processes to enhance efficiency and performance. Marta joined Karimu as a volunteer in 2024. With her experience and skills she supports Karimu in achieving their goals. She creates and introduces new processes and makes sure all important aspects of Karimu work is well documented.

Marta has a master’s degree in Psychology.  She has extensive experience managing global projects, having worked as a Program Manager at Google, where she led complex initiatives within the Street View product portfolio. She is skilled in optimizing processes to enhance efficiency and performance. Marta joined Karimu as a volunteer in 2024. With her experience and skills she supports Karimu in achieving their goals. She creates and introduces new processes and makes sure all important aspects of Karimu work is well documented.

Offir Inbar is a water and climate technology expert. He is a PhD student in the Department of Earth and Environmental Sciences at Tel Aviv University, Israel. His research topics range from building an intersection between AI and environmental challenges to creating water from air. Offir is the former CEO of Engineers Without Borders Tel-Aviv,  and has 10 years of experience in various Climatech initiatives.

Lucy holds a Bachelor degree in Business Administration from Tanzania Institute Accountancy in Dar es Salaam, and graduated in December 2019. After graduating she was involved in different small businesses until she was hired in August 2020 by Royal Village Company Limited  as a front officer in Dodoma, Tanzania.  She was promoted to Assistant General Manager in early 2021 and  worked there for one and a half years. Lucy joined Karimu Foundation in July 2023 initially as an interpreter for the volunteer trip and later as the Local Program Area Lead for sanitation.

Ana Maria Ferreira Brown holds a Bachelor's degree in Education and has a deep passion for the food industry. She has successfully blended these interests in her role with the San Ramon Valley Unified School District’s Child Nutrition Department in California, where she currently serves as Lead Kitchen Assistant at Sycamore Valley Elementary School in Danville, CA. Before this, Ana spent six years as a high school teacher and also distinguished herself as a talented baker and pastry chef. In addition to her work in education and nutrition, Ana plays a crucial role in Karimu's operations, supporting the leadership in Tanzania by identifying action plans from meetings and ensuring they are promptly implemented.

Carley is a highly motivated leader with over 10 years of experience in the technology and engineering industries. She has held decision-making roles on industry-spanning projects, ranging in scope from real estate acquisition, network expansion, data center delivery, to motorway and rail construction. Carley's ability to effectively manage projects of high complexity in fast-paced environments has proven highly impactful for private, public, and government entities in the US, Europe, and Asia Pacific.

Carley believes infrastructure development is a powerful tool for positive change. Whether the goal is revolutionizing renewable energy, improving access to clean water, or creating sustainable transportation systems, Carley is committed to helping teams achieve quantifiable impact.