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Kristofer Johnson

Kristofer Johnson is the Carbon Development Technical Director at Trees for the Future. He looks after the technical strategy for TREES’ carbon portfolio, overseeing methodology development, measurement and verification systems, and the scientific rigor behind our agroforestry carbon projects. With over 14 years of international experience spanning forest and soil carbon science, geospatial analysis, and … Continued

Marie-Claire Tuzeneu

Marie-Claire Tuzeneu is the MEL Director for Forest Garden Quality at Trees for the Future. She is focused on the delivery of impact and carbon data to meet external reporting and verification requirements. Marie-Claire brings over a decade of experience in monitoring, evaluation, and learning across global development initiatives. She has strong expertise in results analysis, adaptive learning, and … Continued

Kendall Garifo

Kendall is the Director of Marketing & Communications at Trees for the Future, where she leads global brand strategy, storytelling, digital platforms, campaigns, and executive thought leadership. She works across country teams to shape how TREES shows up internally and externally, helping bring the organization’s mission, impact, and expertise to life for global audiences. Kendall … Continued

Ceverene Mureithi

Ceverene Mureithi is the Global Director of People & Operations at Trees for the Future. She leads the organization’s global people operations systems, overseeing talent acquisition, the employee lifecycle, performance systems, and employee relations across all TREES countries. Her work is focused on building efficient, people-centered structures that strengthen workplace culture, foster trust, and support … Continued

Jennifer Burnett-Zieman

Jennifer Burnett-Zieman is the Senior Director of Monitoring, Evaluation, and Learning (MEL) at Trees for the Future. She leads the organization’s global MEL strategy, overseeing team leadership, planning, and support to country programs to strengthen data use and continuous learning. Her work focuses on building practical systems that improve program quality, accountability, and impact. Jennifer … Continued

Andrew Zacharias

Andrew Zacharias is the Director of Monitoring, Evaluation, and Learning (MEL) at Trees for the Future. In this role, he leads the organization’s global MEL strategy, guiding the transition from activity-based tracking toward outcome- and impact-driven measurement across country programs. He is particularly focused on supporting and strengthening field-facing systems and infrastructure, including the development, … Continued

Adaobi Okafor

Adaobi Okafor is the Director of Finance at Trees for the Future and holds a Master’s in Business Analysis from The Catholic University of America. She oversees the treasury and procurement function at TREES and is responsible for statutory compliance across all the countries of operation. In her 10+ years with TREES, she has worked … Continued

Katleen Verhelle

Katleen Verhelle is the Kenya Country Director at Trees for the Future, based in Kisumu and originally from Antwerp, Belgium. In this role, Katleen aims to create the conditions for the Kenya team and the farmers they work with to thrive, so the program can deliver strong, lasting results. With a Master’s in Business and … Continued

Andrew Hicks

Andrew Hicks is the Vice President of Programs at TREES, where he leads farmer-centered agroforestry to improve food security, incomes, and biodiversity across Sub-Saharan Africa—combining his passions for serving farmers and restoring ecosystems. Previously, he led global programs at Terraformation and program strategy at Digital Green. He also served with One Acre Fund in Tanzania, … Continued

Tim McLellan

Tim McLellan joined Trees for the Future in 2022 where he and the TREES team are committed to scaling tested agroforestry models with smallholder farmers throughout Africa and beyond. Tim has dedicated his career to large-scale individual and social change programs for leading international non-profits. Before coming to TREES, he served as Chief Operating Officer at … Continued

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