Hannah Mills
Our Team
![](https://nexleaf.org/wp-content/uploads/2015/08/TM21_20210731_Fellows_Portraits_1BH9645-scaled-e1634152658945-150x150.jpg)
Nithya Ramanathan
CEO & Co-Founder
![](https://nexleaf.org/wp-content/uploads/2015/08/17-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5213-scaled-e1686584425798-150x150.jpg)
Martin Lukac
CTO & Co-Founder
![](https://nexleaf.org/wp-content/uploads/2023/03/49-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5374-scaled-e1686585096659-150x150.jpg)
Kevin Arts
Vice President, Operations & Finance
![](https://nexleaf.org/wp-content/uploads/2023/07/OKeefe-Headshot-Medium-e1689789018307-150x150.jpg)
Andrew O’Keefe
Senior Manager for Business Operations & Finance
![](https://nexleaf.org/wp-content/uploads/2021/04/Nave_Elizabeth_2-scaled-e1686584691294-150x150.jpg)
Elizabeth Nave
HR Business Partner
![](https://nexleaf.org/wp-content/uploads/2023/11/A.-MacArthur-Bio-Pic-e1699297709208-150x150.jpeg)
Amanda MacArthur
Head of Strategic Partnerships & Communications
![](https://nexleaf.org/wp-content/uploads/2021/04/9-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5157-scaled-e1686582178393-150x150.jpg)
Hannah Mills
Senior Program Manager, Vaccines
![](https://nexleaf.org/wp-content/uploads/2022/09/35-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5301-scaled-e1686585027937-150x150.jpg)
Anne Nyachomba
Director of Customer
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Nelima Otipa
Senior Program Manager, Impact
![](https://nexleaf.org/wp-content/uploads/2021/04/27-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5260-scaled-e1686584584676-150x150.jpg)
Anita Sircar
Head of Operations, India
![](https://nexleaf.org/wp-content/uploads/2024/06/Susan-background-150x150.png)
Susan Njenga
Head of Product
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Ednah Kiome
Director, Emerging Products
![](https://nexleaf.org/wp-content/uploads/2019/05/47-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5366-scaled-e1686587191697-150x150.jpg)
Lucas Howell
Engineering Director
![](https://nexleaf.org/wp-content/uploads/2021/12/rsz_pp-071581-e1638495867182-150x150.jpeg)
Nagham Sabah
Accountant
![](https://nexleaf.org/wp-content/uploads/2023/06/ns0324-150x150.png)
Noelle Sernett
Operations & Finance Analyst
![](https://nexleaf.org/wp-content/uploads/2015/12/Erin-150x150.png)
Erin Ross
Communications Director
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Erin Sedita
Development Associate
![](https://nexleaf.org/wp-content/uploads/2022/08/38-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5320-scaled-e1686587786273-150x150.jpg)
Erick Mgonda
Technical Account Manager
![](https://nexleaf.org/wp-content/uploads/2022/02/32-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5281-scaled-e1686587008304-150x150.jpg)
Patience Mfune
Senior Project Manager
![](https://nexleaf.org/wp-content/uploads/2021/09/Edwards-Picture--e1632871914823-150x150.jpg)
Edward Gakuru
Global Expansion Manager
![](https://nexleaf.org/wp-content/uploads/2018/07/6-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5134-scaled-e1686587408707-150x150.jpg)
Hosea Kintu
Senior Customer Operations Manager
![](https://nexleaf.org/wp-content/uploads/2022/07/13-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5189-scaled-e1686590912770-150x150.jpg)
Nassem Mohammad
Customer Support Manager, Hardware
![](https://nexleaf.org/wp-content/uploads/2024/04/Paul-M-150x150.png)
Paul Mwarabu
Customer Support Specialist
![](https://nexleaf.org/wp-content/uploads/2016/06/22-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5241-scaled-e1686590759470-150x150.jpg)
Sushanta Pradhan
Customer Success Engineer
![](https://nexleaf.org/wp-content/uploads/2023/01/24-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5245-scaled-e1686590501458-150x150.jpg)
Audrey Lukela
Impact Consultant
![](https://nexleaf.org/wp-content/uploads/2023/03/11-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5171-scaled-e1686589411763-150x150.jpg)
Geofrey Gundah
Impact Consultant
![](https://nexleaf.org/wp-content/uploads/2023/03/26-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5258-scaled-e1686589524840-150x150.jpg)
Shaji Malik
Impact Consultant
![](https://nexleaf.org/wp-content/uploads/2023/02/18-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5218-scaled-e1686589198695-150x150.jpg)
Tisaye Kalua
Impact Consultant
![](https://nexleaf.org/wp-content/uploads/2022/06/15-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5205-scaled-e1686591124964-150x150.jpg)
Anant Kumar
Associate Warehouse Coordinator
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Anurag Mishra
Logistics Coordinator
![](https://nexleaf.org/wp-content/uploads/2021/08/14.2-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5195-scaled-e1686588697458-150x150.jpg)
Dharmendra Pratap Singh
Manufacturing and Development Manager
![](https://nexleaf.org/wp-content/uploads/2020/10/12-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5174-scaled-e1686587504472-150x150.jpg)
Subhasis Mukherjee
Logistics Manager
![](https://nexleaf.org/wp-content/uploads/2023/11/shashi-kant-e1699298175811-150x150.jpg)
Shashi Kant
Manufacturing Coordinator
![](https://nexleaf.org/wp-content/uploads/2022/04/Nexleaf-Profile-scaled-e1649287020170-150x150.jpg)
Adam Saavedra
Product Designer
![](https://nexleaf.org/wp-content/uploads/2021/05/10-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5160-scaled-e1686586888348-150x150.jpg)
Amos Momanyi
Product Manager
![](https://nexleaf.org/wp-content/uploads/2022/07/28-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5264-scaled-e1686587143989-150x150.jpg)
Jill Moraa
Product Manager
![](https://nexleaf.org/wp-content/uploads/2021/06/36-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5314-scaled-e1686585296367-150x150.jpg)
Tom Mehoke
Senior Data & Visualization Specialist
![](https://nexleaf.org/wp-content/uploads/2019/10/39-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5323-scaled-e1686588765653-150x150.jpg)
Aayush Khanna
Software Developer
![](https://nexleaf.org/wp-content/uploads/2022/11/brian-moenga-photo-150x150.jpg)
Brian Moenga
Software Engineer, Front-End
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Chris Combs
Software Engineer, Back-End
![](https://nexleaf.org/wp-content/uploads/2022/09/54-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5112-scaled-e1686590614508-150x150.jpg)
Colin Groark
Software Engineer, Front-End
![](https://nexleaf.org/wp-content/uploads/2024/03/Innocent2-150x150.png)
Innocent Kithinji
Software Engineer, Back-End
![](https://nexleaf.org/wp-content/uploads/2022/11/3-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5097-scaled-e1686588560733-150x150.jpg)
Mike Gichia
Software Engineer
![](https://nexleaf.org/wp-content/uploads/2017/08/40-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5336-scaled-e1686587344723-150x150.jpg)
Terence Honles
Principal Software Engineer
![](https://nexleaf.org/wp-content/uploads/2017/12/Headshot_Terrycomp.png)
Terry Chern
Senior Software Engineer, Back-End
Board Of Directors
![](https://nexleaf.org/wp-content/uploads/2015/08/TM21_20210731_Fellows_Portraits_1BH9645-scaled-e1634152658945-150x150.jpg)
Nithya Ramanathan
CEO & Co-Founder
![](https://nexleaf.org/wp-content/uploads/2015/08/17-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5213-scaled-e1686584425798-150x150.jpg)
Martin Lukac
CTO & Co-Founder
![](https://nexleaf.org/wp-content/uploads/2018/11/anish_ansawi_2018-resized.png)
Anish Aswani
Board Chair
Managing Director, Florac
Managing Director, Florac
![](https://nexleaf.org/wp-content/uploads/2023/04/Yacine-Djibo-Headshot-2023-150x150.jpg)
Yacine Diop Djibo
Founder & Executive Director, Speak Up Africa
![](https://nexleaf.org/wp-content/uploads/2018/11/Jim_Fruchterman_Portrait-square.png)
Jim Fruchterman
Founder and CEO, Tech Matters
![](https://nexleaf.org/wp-content/uploads/2022/02/RupeshShah_headshot-scaled-e1644531659952-150x150.jpg)
Rupesh Shah
Vice President of Product Management, Granular
![](https://nexleaf.org/wp-content/uploads/2023/04/moz-siddiqui-150x150.jpeg)
Moz Siddiqui
Director of Partnerships, WHO Foundation
![](https://nexleaf.org/wp-content/uploads/2015/09/asher_0-150x150.jpg)
Asher Waldfogel
Serial Entrepreneur
Advisory Board
![](https://nexleaf.org/wp-content/uploads/2024/07/1696409610876-150x150.jpeg)
Dr. Seth Berkley
Former CEO, Gavi, the Vaccine Alliance
![](https://nexleaf.org/wp-content/uploads/2017/07/Estrin_Deborah_Advisor_headshot.png)
Deborah Estrin
Associate Dean and Professor,
Cornell Tech
![](https://nexleaf.org/wp-content/uploads/2024/07/1517462660322-150x150.jpeg)
Laura Hattendorf
Senior Advisor, Mulago Foundation; Lecturer, Stanford Graduate School of Business
![](https://nexleaf.org/wp-content/uploads/2016/11/R-Malpani-150x150.jpg)
Radhika Malpani
Founder, Google Images; Former Senior Director, Eng @ Google
![](https://nexleaf.org/wp-content/uploads/2018/05/NagleFrank_final-square.png)
Frank Nagle
Assistant Professor, Harvard Business School
![](https://nexleaf.org/wp-content/uploads/2021/04/wendy-150x150.jpg)
Wendy Prosser
Senior Technical Officer, Immunization Center, John Snow, Inc. (JSI)
![](https://nexleaf.org/wp-content/uploads/2024/07/1516229412846-150x150.jpeg)
Russ Siegelman
Lecturer, Stanford Graduate School of Business
![](https://nexleaf.org/wp-content/uploads/2019/03/RyanVinyardHeadShotWhite-1.png)
Ryan Vinyard
Hardware Startup Consultant
![](https://nexleaf.org/wp-content/uploads/2015/08/vin-41-150x150.jpg)
Vinitha Watson
Founder, Zoo Labs
![](https://nexleaf.org/wp-content/uploads/2021/04/9-NexLeaf-Portraits-18-May-2023-by-delecameda.com-IMG_5157-scaled-e1686582178393.jpg)
Hannah Mills
Senior Program Manager, Vaccines
Hannah is the Senior Program Manager for Vaccines. She manages the planning and operations for Nexleaf’s vaccine cold chain projects to ensure that governments and health workers around the world have access to quality data to guide their vaccine decision-making and improve health outcomes. Hannah is motivated by Nexleaf’s focus on partnering with local stakeholders to generate user-centered data and solutions.
She has an MPH in Global Health from Boston University and served as a Peace Corps Health Volunteer in Senegal. Prior to joining Nexleaf, she managed social and behavior change programs in a wide range of health areas in Francophone West Africa for the Johns Hopkins Center for Communication Programs. Hannah is passionate about using technology and human-centered design approaches with communities to achieve their goals.