Our global team has expertise in public health, technology and development, and a passion for improving health outcomes and  achieving results.


Abby Gall

HR Manager

Ali Nyange

Senior Field Implementer

Alison Clark

Chief Operating Officer

Allyson Nelson

Technical Advisor,

Program Quality

Blessings Malizani

Finance & Admin


Caroline Giandomenico

Financial Analyst

Chris Kulanga

Technical Advisor, Malawi

David Hershberg

Director of Partnerships

Erica Layer

Chief Executive Officer

Gerald Usika

Monitoring Evaluation & Learning Manager

Giuseppe Valerio

Deputy Country Director, Malawi

Gloria Kahamba

Program Manager

Gulam Abdulkarim

Senior Field Implementer

Haroub Omar 

Finance & Administration Officer 

Heiko Hornung

Director of

Digital Solutions

Imran Esmail

Software Engineer

Isaya Mollel

Software Engineer

Jalia Tibaijuka

Training and Mentoring Manager

Jessica Trask

Grants & Compliance


Joe Wanyoike

Program Director,


Kassim Sheghembe

Software Engineer

Katie Simba

Finance & Operations Manager

Melania Nkaka

Field Coordinator

Moh'd Abdalla Rashid

Senior Field Implementer

Mohammed Makame

Logistics  & Admin Assistant

Neema Kafwimi

Program Coordinator

Nitusima Kataraia

Software Engineer

Omar Abdalla

Technical Advisor

Rachel Hofmann

Global Program


Rebecca Litner

Project Director

Salum Mbaruok

Senior Project Coordinator

Samira Said

Program Manager

Sergio Jarne

Senior Engineering Manager

Stefanie Kot

Program Manager

Stella Marealle

Senior Finance &

Admin Officer

Taylor Craig

Health Communications Lead

Tracey Li

Senior Data Lead

Board of Directors

Alain Labrique

Professor, Johns Hopkins Bloomberg School of Public Health

Ashton Peery, Chairperson

Independent Consultant on Strategy and Commercialization

Barbara Bulc

Founder and Director of Global Development

Barbara Mitchell

Former Executive Director, International Action Network for Gender Equity & Law


David Sherman, Treasurer

Professor of Accounting, Northeastern University College of Business Administration

Erica Layer, President

CEO, D-tree International 


Milton Kotelchuck

Senior Scientist in Maternal and Child Health Center for Child and Adolescent Health Policy, Mass General Hospital for Children; Visiting Professor of Pediatrics, Harvard Medical School

Na'im Merchant

Co-Founder and Managing Director of Scaling Health Innovations

Ylisabeth Bradshaw, Clerk

Academic Director of the MS in Pain Research, Education and Policy, Tufts University


D-tree International

167 Washington Street

Suite 5

Norwell, MA 02061 - USA

Telephone: +1 978-238-9122


Join us! We're growing and

looking for exceptional people to join our team. See our open job opportunities.


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