Meet the Devex Authors

Teresa (Teri) Sivilli

Teresa (Teri) Sivilli

Teri Sivilli is the program manager of the Garrison Institute's Contemplative-Based Resilience Training program, an integrated, evidence-based psychosocial skills program designed to reduce the impact of acute and chronic stress and build personal resilience for international humanitarian aid professionals. She has also worked on international mental health research for the Centers for Disease Control and Prevention, and as project coordinator for Emory University's Collaborative in Contemplative Studies.
Terri Wills

Terri Wills

Terri Wills is the CEO of the World Green Building Council. She is responsible for developing and implementing the strategy for the organization as well as working with the board of directors, its various Committees and the staff. Previously, Terri was with the C40 Cities Climate Leadership Group where she spearheaded C40's networks that have had a direct impact on policy in over half of C40 cities. She also served as the London City Director for the Clinton Climate Initiative, worked with the Government of Ontario on clean technology and creative industry development, and worked for the BBC as a Head of Strategy. In March 2017, Terri was named as one of 10 women leading the global push towards climate action, gender equality and social justice for all by Eco-Business.
Tess Woolfenden

Tess Woolfenden

Tess Woolfenden is a policy adviser at Debt Justice where she works on the links between debt and the climate crisis, and the colonial and neocolonial nature of global south debt alongside allies across the world.
Tessa Oraro-Lawrence

Tessa Oraro-Lawrence

As the director of advocacy, Dr. Tessa Oraro-Lawrence leads global policy and financing advocacy efforts at the Community Health Impact Coalition, a field catalyst created by health practitioners in more than 30 countries to make professionalized community health workers a norm worldwide. She holds a Ph.D. in epidemiology with a focus on health financing.
Tessie San Martin

Tessie San Martin

Tessie San Martin is a co-chair of the Modernizing Foreign Assistance Network and president and CEO of Plan International USA.
Tessie Tzavaras Catsambas

Tessie Tzavaras Catsambas

Tessie Tzavaras Catsambas is president and chief financial officer at EnCompass. She is an evaluation and knowledge management expert with more than 25 years’ experience in evaluation, quality improvement and innovation. Her work has included supporting organizational change in response to health reform, managing global evaluation projects, program design, corporate strategy development and e-learning program development.
Teta Mukulira

Teta Mukulira

Teta Mukulira is a policy analyst in Development Reimagined’s decolonizing development team, with a background in law and politics. As a Pan-Africanist, she’s driven by advancing equitable development across the continent. She holds an LLM in Human Rights Law from the University of Nottingham and a B.A. in Law and Politics from the University of Kent.
Tetiana Gaviuk

Tetiana Gaviuk

Tetiana Gaviuk is a programs specialist at Nonviolent Peaceforce. Before this, she worked at NP in South Sudan. She previously worked in the occupied Palestinian territories, Iraq, Syria, and Mongolia as a communications and advocacy specialist for various humanitarian agencies.
Thabani Maphosa

Thabani Maphosa

Thabani Maphosa is Gavi’s managing director of country programs delivery, overseeing the vaccine alliance’s operations in 73 countries. The country programs delivery department’s raison d'être is to harness the power of Gavi for countries to save the maximum number of lives through immunization.
Thabi Leoka

Thabi Leoka

Thabi Leoka is part of the steering committee of the Finance for Development Lab, an economic think tank launched in June 2022. She an independent director at MTN South Africa and Anglo American Platinum and an economist at the Small Business Institute. She has notably served as a member of the commission of inquiry into the Public Investment Corporation, the largest pension fund in Africa. She was also appointed by the South African minister of finance to review the country’s system of taxation of staple goods. Leoka was named 2017 Economist of the Year by ABSIP.