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Brian Chirwa is an agricultural and environmental scientist with over three decades worth of experience working on projects funded by the World Bank, the U.S. President’s Malaria Initiative (PMI), the Environmental Council of Zambia, and the Southern African Development Community (SADC). He brings 18 years’ experience on PMI-funded projects focused on indoor residual spraying (IRS) and insecticide-treated nets (ITNs) and has provided technical leadership, assistance, and high-level management for country-wide Zambian IRS and ITN campaigns. Brian also has three decades' worth of experience designing environmental information systems (EIS) for public organizations.

Dr. Heinrich Hock is an economist with 19 years of experience conducting research on labor, education, disability employment, and social insurance. His work focuses on producing results that help policymakers and program staff understand outcomes for priority populations and research-based options for improving outcomes. He develops rigorous and feasible plans for research designs, data collection and analysis, and dissemination of findings. Hock has led work on over a dozen labor-related projects for the U.S. Department of Labor (DOL) and other funders to assess the outcomes for groups such as dislocated workers, youth and adult jobseekers with disabilities, and veterans, among other groups. Hock also has played a key role in U.S. Department of Education (ED) studies to identify solutions for improving career outcomes among special education and adult education participants. 

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.

Sarah Prezek is a senior program and project management professional with more than 10 years of experience managing complex federal programs, multidisciplinary teams, and large project portfolios.

Matthew Trombley has a Ph.D. in economics with concentrations in health and applied econometric methods. He has extensive experience designing and conducting evaluations for the Center for Medicare & Medicaid Innovation (CMMI), including analyses of historically underserved populations.

Dr. Fiona Mactaggart is a multi-disciplinary technical advisor with more than 10 years of experience in monitoring, evaluation, research, and learning (MERL); infectious disease control; and public health. As a co-lead of Abt's MERL portfolio, she draws on complexity theory and scientific methods to help clients test what works, discover why it works, and provide timely evidence-based recommendations to inform important decisions about policy and practice. Mactaggart contributes to business development, programme delivery, and thought leadership. She works in five key areas: monitoring (e.g., design of digital tools and visualisation platforms) research (e.g., cross-sectional survey design), evaluation methodologies (e.g., contribution analysis), learning (e.g., portfolio level evidence-informed strategic decision making), and cross-cutting MERL capabilities (e.g., adaptive management and GEDSI). Mactaggart has worked extensively in the Pacific and Southeast Asia.

Robin Koralek is a seasoned evaluator and project director with over 30 years of experience in evaluating federal and state social welfare programs. Her expertise spans areas such as food assistance, employment and training cash assistance, and barriers to employment, including for those recovering from substance use disorders. She has worked with various governmental and non-profit organizations, focusing on program design, implementation, and outcomes.

Elizabeth Giardino’s evaluation and technical assistance work on housing, community development, asset building, and government innovation policies and programs promotes opportunity and healthy outcomes for people across the U.S. Giardino specializes in leading teams, strategic planning, and relationship building, and has proven expertise in incorporating community-based participatory research into technical assistance engagements.