We seek to understand, learn from, and improve global development activities. SI provides consulting, technical assistance, and training services to public and private aid agencies, non-governmental organizations, and governments. We help our clients plan for and measure development results. We strengthen staff and organizational performance. SI works across sectors to reduce poverty, improve health and education, promote peace and democratic governance, foster economic growth, and protect the environment.

Click here to download the Social Impact brochure.

Haga clic aquí para leer sobre nosotros en español.


Rolf Sartorius Founder & Board Chair
Pat Hanscom Founder


Shiro Gnanaselvam Chief Executive Officer
Nana Frimpong Chief Operating Officer
Danielle de García Vice President, Strategy, Performance, and Learning
Eskedar Brantley Vice President, People and Culture
Greg Koldys, PhD Vice President, Business Development
Mateusz Pucilowski Vice President, Evaluation, Research, and Analytics
Rebecca Lawrence Vice President, Program Management Unit
Brian Math Senior Director, Finance, Contracts, and Pricing


Ben Morse, PhD Technical Director, Impact Evaluation
Chris Thompson Technical Director, Strategy, Performance, & Learning
Erica Carley Director of Contracts and Compliance, Chief Compliance and Ethics Officer
Erin Cross Director, Recruitment
Mike Duthie Senior Advisor
Jennifer L. Mandel, PhD Program Director, Strategy, Performance, and Learning
Luis A. Camacho, PhD Senior Technical Director, Evaluation, Research, and Analytics


Social Impact has worked in more than 120 countries in every region of the world.

Open a printable version of this map here.


In Ethiopia, SI contributes to expanding economic growth and improving health and education. SI provides monitoring, evaluation, and technical services such as GIS mapping services to increase accountability and evidence-based programming, learning, and adapting in USAID/Ethiopia development assistance.

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SI provided technical assistance and capacity building support to the Ministry of Education and the Ghana Education Service to help develop a systematic monitoring and evaluation system to inform stronger education policy and programs. We also helped USAID determine the impact of primary education activities.

SI is working with USAID/Haiti to measure, monitor, and evaluate the impact of U.S. development assistance in the country. SI is providing services such as public opinion polls, baseline surveys, midterm and final performance evaluations, impact evaluations, and assessments.

SI is conducting an innovative, 3.5 year developmental evaluation of USAID/Indonesia’s flagship maternal and newborn health activity, Jalin.

Under MEL Support, SI also provides technical, consulting, and advisory services related to monitoring, evaluation and learning (MEL) to the USAID/Indonesia Mission.

SI provides comprehensive performance monitoring and evaluation services to ensure the effectiveness of USAID/Lebanon’s assistance programs. Our work furthers gender integration, environmental protection, and countering trafficking in persons. We also provide GIS mapping, communications services, and support for environmental compliance.

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SI provides integrated monitoring, evaluation, and learning support to USAID/Liberia. Our work contributes to improved economic growth, governance, health, and education programs across Liberia through more robust M&E and adaptive management.

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SI is building the capacity and sustainability of Mexican civil society organizations using USAID’s Human and Institutional Capacity Development approach. Our work focuses on local organizations that play a key role in crime and violence prevention, criminal justice reform, and human rights.

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The Bangkok office served as our regional hub for activities in Central Asia, South Asia, Southeast Asia, and the Pacific. We supported performance monitoring, conducted evaluations, and facilitated learning events. We produced evidence-based recommendations to improve the effectiveness of USAID programming in the region.

Through the “USAID Learns” activity, Social Impact is supporting USAID/Vietnam to streamline monitoring, evaluation, and learning (MEL) capacity across Mission teams, increase hands-on capacity building for local organizations and entities, implement innovative approaches, increase effective collaboration among stakeholders, and develop a highly utilized M&E system.

SI’s headquarters are in Arlington, Virginia just outside of Washington, DC. Our diverse team of more than 200 full-time technical experts, program managers, leadership, and administrative staff support SI programs in the United States and around the world.

Contact: General information – [email protected]

Media inquiries – Ally Agoglia [email protected]

Food Security Service Center [email protected]

Map of current and former S.I. activities, field offices and headquarters.


Working with international and local partners, we advance the development effectiveness of diverse clients, such as:

US Agency for International Development

Millennium Challenge Corporation

US Department of State

United States Department of Agriculture

General Services Administration

UK Aid – Department for International Development (DFID)

The MasterCard Foundation

Bill & Melinda Gates Foundation

Bill & Melinda Gates Foundation

The World Bank


Discovery Learning Alliance

African Development Bank

The Carter Center



Crown Agents USA


FHI 360

IDS International

International Fund for Agricultural Development

MacArthur Foundation

The Manoff Group

Mott Macdonald


Relief International

RTI International


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We are action oriented and pragmatic. We take pride in creating useful products and delivering high-quality results.

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We are honest, ethical, and transparent in our work and with each other. We welcome difficult conversations to ensure accountability.

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We value and empower all team members and encourage professional growth. We learn from our work and each other.

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We are passionate about what we do. We relish our culture of fun and humor.


CreedInAction.orgSocial Impact (SI) is committed to building a people-centered organization that is focused on cultivating a diverse, equitable, and inclusive culture that prioritizes the individual contributions and belonging of all. We believe that such a culture will make us better and more effective in achieving our mission to advance development effectiveness. Our Diversity, Equity, Inclusion & Belonging (DEI&B) policy, along with our company-wide DEI&B strategic objectives, serve to reinforce the commitment, goals, and guidance that will enhance and support DEI&B at Social Impact.

Social Impact’s main goals are as follows:

  • Diversity: Identify, Attract, Engage and Retain diverse talent
  • Equity: Ensure transparency and equitable treatment of all in our people policies and communication practices
  • Inclusion: Establish employee resource groups, create professional development practices, and utilize HR metric data to inform inclusive change and progress
  • Belonging: Enable an environment where our collective diversity is valued and all SI staff feel welcome and accepted as they are

SI has always strived to go beyond what is expected and forge a new path in the international development sector, and our commitment encapsulates our overall goal to promote and prioritize DEI&B both in our organization as well as in our sector. In 2021 SI led an initiative to develop the first ever benchmarking of DEI in the international development and humanitarian assistance sector. BRIDGE (Benchmarking Race Inclusion and Diversity in Global Engagement) was a landmark study that documented the diversity gaps within our sector and has been widely used at the organizational and sectoral level to drive change. SI also became a founding member of the Coalition for Racial & Ethnic Equity in Development (CREED), which is a collective of U.S.-based international development and humanitarian assistance organizations committed to building racial and ethnic equity (REE). We have made the pledge to advance racial and ethnic diversity, equity, inclusion, and belonging within our own organizations’ policies, systems, and culture in keeping with attainable and measurable goals and work to instill REE in international development.

Read the full SI DEI&B Policy click here.

Read the results from the BRIDGE study click here.

For questions regarding Social Impact’s DEI&B policy, please contact the VP People & Culture, Eskedar Brantley at [email protected] and/or the Chief Compliance & Ethics Officer, Erica Carley at [email protected]

For questions regarding Social Impact’s DEI&B Council and/or Employee Resource Groups, please contact [email protected]




Rolf Sartorius and Patricia Hanscom form Social Impact in response to a growing global emphasis on making international development more effective in improving people’s lives. SI mobilizes a small group of outstanding global consultants with a deep appreciation for participatory development and results-based management.


SI focuses on applying best practices in program design to address HIV/AIDS in sub-Saharan Africa. After passage of the Government Performance and Results Act, SI develops new tools and approaches to support results-based management of U.S. foreign assistance.



SI helps the World Bank enhance its effectiveness as a development agency. SI works with USAID’s Office of Transition Initiatives to strengthen program planning and management in fragile states. SI conducts impact evaluations for the US Millennium Challenge Corporation and partners with the Bill and Melinda Gates Foundation.


SI begins work with the MasterCard Foundation and provides services through the DFID Global Evaluation Framework Agreement. SI is named USAID Small Business of the Year in 2013 for demonstrating best practices in the field and serving as a model for small and minority-owned implementing partners.


As a mid-size business, SI continues its work supporting long-term program field offices and engaging in hundreds of short-term projects across the globe. SI continues to attract new clients, new talent, and to further its mission to advance development effectiveness.