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Geoff Scahill has over 20 years of experience working in and managing international development programs. He has worked extensively within Papua New Guinea (PNG) and the Pacific – predominantly in Indonesia, Fiji, Samoa, and the Solomon Islands. He brings a long history as a health sector professional and has held roles as a health management advisor and health systems adviser in Pacific Island Countries. Geoff draws on his background in finance and economics to work with counterparts to increase efficiencies within the programs Abt Global delivers.

Joe Donahue is an environmental policy specialist and portfolio manager with more than 15 years of experience supporting governments in developing and implementing policies and programs focused on climate change, clean energy, ozone layer protection, and solid waste management. His work spans both domestic and international programs and initiatives. Technical areas of expertise include climate change mitigation strategies; international capacity building; greenhouse gas quantification methods; short-lived climate pollutants, especially methane, black carbon, and hydrofluorocarbons; and clean energy policies.

T.J. Pepping is an environmental scientist with 13 years of experience working in the intersection of data analysis and communication, helping clients interpret environmental data and share important information with the public. 

Radha Roy is a mixed-methods researcher and senior evaluation leader with over 16 years of experience designing and directing large-scale federal evaluations of workforce development, income support, and education programs.

Dr. Lianne Fisman is an experienced researcher and a recognized expert in qualitative and mixed method research design, and analysis. She specializes in evaluating and strengthening programs that support economically disadvantaged individuals and communities. Dr. Fisman currently leads Abt’s Qualitative and Mixed Methods sub-capability. During her tenure at Abt, Dr. Fisman has served as project director and task leader on projects related to a variety of policy areas, including housing, youth and community development, education, and financial wellness.

Dereje Dengela is an epidemiologist and entomologist with more than 25 years of experience in planning, implementation, monitoring, and evaluation of malaria control programs. He has extensive managerial experience, having supervised as many as 94 professionals. He has held senior positions with the government of Ethiopia, worked on projects for the U.S. Agency for International Development (USAID), and served as a national malaria program officer in Ethiopia. He supported the Ministry of Health of Ethiopia in mobilization of financial resources from donors, particularly the Global Fund. Dengela has authored or co-authored more than 30 publications in peer-reviewed journals.

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.

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.

Jessen Carroll is a human resources (HR) professional with more than 20 years of experience overseeing all aspects of HR, organizational communications, governance, and administration functions. She has experience leading organizational integrations and change management efforts. She also has operations management, business analysis, business process improvement, and project management experience. She can balance tactical day-to-day operational needs with a strategic grasp of long-term business objectives. 

Brooke Abrams is a trained political scientist and researcher. With over 11 years of experience, she specializes in applied housing and health, bringing expertise in managing and contributing to place-based, mixed-method, and community-centered solutions. Her work spans research, evaluation, and technical assistance (TA) projects across diverse policy domains, delivering innovative and tailored strategies to drive impactful change.As a Client Solutions Architect at Abt, Abrams plays a pivotal role in designing client-focused frameworks and solutions that emphasize rigorous, data-informed, multi-disciplinary, and population-tailored design. She specializes in community-specific, monitoring, evaluation, and technical assistance approaches to engage and work alongside persons with lived expertise.