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Jeffrey (Jeff) Leone is a senior growth leader with more than 20 years of experience leading growth teams and managing complex business development functions such as capture, bids and proposals, market intelligence and competitive assessment, pipeline development, and sales analytics.  Leone’s experience cuts across a range of U.S. domestic and international development markets at Abt and at large, global companies. 

Shelby Hickman is a mixed methods research and evaluation professional with 14 years of experience in program evaluation, training and technical assistance, and analysis of criminal and juvenile justice administrative data. Dr. Hickman has expertise in overseeing studies funded by the Departments of Justice and Health and Human Services. She has experience in causal inference methods for both random assignment and quasi-experimental designs. Additionally, she is proficient in qualitative methodologies, such as semi-structured interviews, focus groups, cognitive interviews, and observations. Hickman is also an expert in forced labor and human trafficking.

Anika Vartan has more than 20 years of experience designing, implementing, and evaluating public health and international development programs to improve access to—and quality of—health care, and increase community participation in social, economic, and political life. Vartan’s expertise is in mixed-methods and qualitative research, project management, health policy analysis, capacity building, adult education and technical assistance, organizational assessment and development, and community-driven development. She has supported the Administration for Community Living (ACL), Agency for Healthcare Research and Quality (AHRQ), Centers for Disease Control and Prevention (CDC), Centers for Medicare and Medicaid Services (CMS), Federal Drug Administration (FDA), Health Resources and Services Administration (HRSA), United States Agency for International Development (USAID), and Department of State (DOS) clients.

Kristie McKinley is a federal IT and business development leader with more than 33 years of experience supporting the U.S. Department of Agriculture (USDA).

Meghan Henry is a social science researcher with over 15 years of experience in public policy and program evaluation, specifically in the fields of housing and homelessness and the intersection of homelessness and education. Henry has extensive experience leading evaluations, including large data collection efforts, conducting qualitative data collection, data analysis, and outcome evaluations. As project director of the U.S. Department of Housing and Urban Development’s (HUD) Annual Homeless Assessment Report (AHAR) to Congress, she has considerable experience synthesizing large amounts of information to make the data accessible and actionable for federal, state, local, and philanthropic clients.

Didar Ali Didar is technical advisor for monitoring, evaluation, research, and learning (MERL) in Abt’s International Technical Practice (ITP). He has more than 10 years of experience in MERL, project design, and management in the areas of agriculture, food security, economic inclusion, civil society, governance, health, and education. He also has experience in women’s rights advocacy, including designing and implementing advocacy plans and organizing national and international events.

Eduardo Castellon has two decades of experience helping public sector clients—from the U.S. Agency for International Development (USAID) and the U.S. Postal Service (USPS) to the Department of Housing and Urban Development—grow and refine their operations and impact. He has extensive experience delivering consulting expertise focused on artificial intelligence (AI), supply chain, procurement, financial management, and advanced analytics. His technological, consultative, and entrepreneurial skills help clients find new ways to address challenges ranging from affordable housing to homelessness to guaranteed income. He also has extensive expertise in technical assistance and implementation (TA&I) approaches. And his management experience includes developing high-performing teams through skills and career development and succession planning.

Rodrigue Fiacre Ahoumènou Agossa is a public health entomologist with more than 12 years of experience in control and elimination of infectious diseases, particularly malaria control programs. His expertise includes project management; research; vector control tools development and evaluation; case management; and health system strengthening. He also has worked on development, consolidation, and popularization of norms, policies, and guidelines for the fight against malaria and neglected tropical diseases. He has collaborated with the Global Fund, World Health Organization, Against Malaria Foundation, and Ministry of Health.

TJ Shumard is a senior business development executive with two decades of experience advancing priorities for the Centers for Medicare & Medicaid Services (CMS) and state Medicaid priorities. He specializes in pipeline development, capture strategy, and digital modernization across Medicare and Medicaid. Shumard brings deep knowledge of federal procurement, CMS data platforms, and program oversight, with a strong record of shaping complex federal opportunities.