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Matthew Sweeney leads business development and account management for Abt’s portfolio of work at the Centers for Medicare & Medicaid Services (CMS). With more than 20 years of healthcare experience partnering with federal agencies, small businesses, and the private sector, Sweeney has led large research and operational projects focused on various dimensions of alternative payment models, including:  implementing and validating quality measures, program support for hospital pay-for-performance programs, and advising clients on the design and refinement of their value-based purchasing arrangements.

Dr. Jessica Thornton Walker is an accomplished researcher and the leader of Abt’s quantitative methods team who brings 20 years of experience designing and implementing policy-relevant research. She is a recognized expert in large-scale, multi-site evaluations to assess the impacts of social policies and programs in housing and homelessness, child welfare, adolescent risk-taking behaviors, and substance use.In her role as the Quantitative Methods Lead, Dr. Walker is responsible for the management, staffing, budgeting, solutioning, and strategy that guides the work of 120 quantitative research staff and ensures Abt provides high-quality technical delivery and innovative solutions tailored to clients.

Carolynn Poulsen is the Director of Abt’s Global Health Security Account. She has nearly 20 years of experience overseeing the design and implementation of global health programs focusing on infectious disease and health systems strengthening. Poulsen is fluent in French and Spanish and has supported the delivery of effective global health solutions in more than 30 countries in Africa, Asia, and Latin America.

Hanna Kovaleva is a program manager with 15 years of experience managing  humanitarian aid and development programs in Ukraine, with a recent focus on the eastern part of the country ravaged by the war with Russia. She has worked with international organizations, including the Foreign, Commonwealth & Development Office (FCDO) and the United Nations, as well as social enterprises. Kovaleva’s work with vulnerable populations has centred around gender equality, non-discrimination, conflict sensitivity, and social inclusion. She has extensive experience with monitoring, evaluation, research, and learning approaches; program management; and communication strategies in public health, mental health, and community stabilisation.

Bolanle Olusola-Faleye has over two decades of experience leading and managing diverse health programs. She specializes in strategic direction, technical leadership, and implementation of interventions to strengthen health systems, particularly in tuberculosis (TB) control and public-private partnerships. Her methodological expertise encompasses rigorous epidemiological and biostatistical approaches, health policy and management strategies, and the application of innovative programmatic and public health methodologies. Her clients have included the U.S. Agency for International Development (USAID), the Government of Nigeria, development partners, and other key stakeholders in the field of public health and TB control.

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. Denis Sinzinkayo is a medical doctor with a decade’s worth of experience working in both public and private hospitals as well as serving as a district medical officer and the deputy director of the National Malaria Control Program of the Ministry of Public Health in Burundi.Dr. Sinzinkayo currently serves as the Chief of Party (COP) on the Abt-led U.S. President’s Malaria Initiative Evolving Vector Control to Fight Malaria Project (PMI Evolve) in Burundi. He works with the National Malaria Control Program (NMCP) to strengthen its capacity to conduct vector surveillance activities and provide assistance on government-led vector control activities. He also coordinates bi-monthly entomological surveys across nine sentinel sites in Burundi.

Jules Nahimana is a health program manager with almost two decades of experience working in the public health sector. He has worked extensively on malaria vector control programs, especially those implementing indoor residual spraying (IRS), in countries including Burkina Faso, Malawi, Mozambique, and Rwanda. In these roles, he has worked with many high-level organizations including the Ministries of Health (MOH) and the U.S. President’s Malaria Initiative (PMI).

Benny Kil is a certified Project Management Professional (PMP) and a certified scrum master (CSM) with over 15 years of project and product management experience—working in business analysis and project delivery in the federal, state, and commercial areas with a focus on technology and digital processes. He has experience in leading multidisciplinary teams to deliver client requirements using agile methodologies (scrum and kanban). He is an experienced leader who can provide IT project and portfolio management oversight through the entire software development lifecycle (SDLC), including client management, business requirements elicitation, IT software development, quality assurance (QA)/quality control (QC), testing, and deployment. Kil has led projects with a variety of federal clients, including the Centers for Disease Control and Prevention (CDC), the Centers for Medicare and Medicaid Services (CMS), the Department of Homeland Security (DHS), the Federal Communications Commission (FCC), and the United States Department of Agriculture (USDA).

Ofonama Archibong is an energy transformation expert with 12 years of experience in infrastructure, energy, and climate in Africa. Ofonama brings a wealth of experience in project management, policy development, and business modeling to the forefront. His skill set encompasses technical advisory, stakeholder management, research, and leadership, making him a versatile asset in driving forward sustainable energy initiatives. He has worked with prestigious organizations including Amazon Energy Limited, TEAM Engineering Limited, the Nigeria Electrification Project implemented by the Rural Electrification Agency and most recently the German Development Cooperation Agency (GIZ).