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Diane Paulsell is an applied social scientist with more than 20 years of experience designing, conducting, and overseeing mixed-methods policy-focused research, including national multi-site studies. She has also led rapid cycle learning and program improvement efforts with a variety of human services programs and a foundation-funded research program to advance equitable access to family supportive services. Her areas of expertise range from early care and education to parenting, family engagement, youth development and family supportive policies and programs, including nutrition.

In his career as a senior finance and operations executive, Rehberger most recently served as the Senior Vice President, Chief Financial Officer of Engility, a Virginia-based government contractor.  He held similar positions with TASC from 2010 until its merger with Engility in 2015.  Rehberger helped guide both companies as the government industry cycled through a severe downturn and recovery, counseling the Board of Directors regarding strategy, enterprise risk management, cyber security, and compensation.  He previously held executive positions with telecommunications firms XO Communications and MCI. In 2017, Virginia Business awarded Rehberger the Virginia CFO of the Year award for his outstanding commitment to financial stewardship and dedication to the success of Engility.

Gerald Adolph is an expert in growth strategy, acquisition strategy and merger integration planning for corporate and mission driven organizations. He led the Global Mergers & Restructuring Practice and was elected senior partner over a 35-year career with Booz Allen Hamilton and its successor strategy companies.Adolph was one of the lead practitioners and developers of Booz's very successful capabilities-driven approach to strategy.  During his consulting career he has primarily focused on assisting clients with growth strategies, new business development, innovation strategy and business redefinition. He often works with companies/entities undergoing very significant industry disruption.

Dr. James White, a registered nurse and Collaborative Specialist in Global Health (CSGH), is a senior health specialist with a focus on infectious disease and global health security (GHS). He has over 20 years of experience that includes delivery of emergency response programs in emergency and fragile settings, pandemic preparedness and response, health systems strengthening, and public-private collaboration for GHS. White has worked in more than 20 countries in Africa, Asia, and Latin America assisting in both acute outbreak response and preparation for health emergencies. He also represents Abt as a technical expert on external GHS and pandemic preparedness working groups. His clients have included the U.S. Agency for International Development (USAID), the United Kingdom’s Foreign Commonwealth and Development Office (FCDO), and the Canadian International Development Association (CIDA) (now Global Affairs Canada).

Ellen Bobronnikov has extensive research and evaluation experience in educational and social policy in both domestic and international contexts. Her focus includes project management, evaluations of federal and local programs, and the provision of technical assistance. She has experience conducting impact, implementation, and process studies.

John St. Clair has more than 25 years of operations and finance experience, with a focus on global operating models, project excellence, business process improvement and driving transformational change to scale organizational impact. He has a proven record of success leveraging global business and financial acumen with cross-disciplinary expertise to develop and execute strategic business plans, programs, and initiatives across countries and cultures.  St. Clair brings valuable perspectives from his extensive experience driving operational improvements across projects, regions and headquarters teams in the international development field.

Sarah Dunn, an experienced international developme nt leader, is Managing Director of Abt Britain.  She is responsible for driving the UK growth strategy as well as leading and mentoring our UK home office and Program teams to deliver against Abt’s mission. Dunn spent nearly two decades as a senior executive with the Department for International Development (now Foreign, Commonwealth & Development Office), where her final role in 2014 was country director for DFID Southern Africa/South Africa.  While at DFID, she worked across Africa, the Middle East and Caribbean and held several other executive and strategic advisory positions, including head of trade policy.

Shelly Spoeth brings more than 25 years of strategic communication and social marketing experience to tackling complex health and social issues.  She  worked for a decade with pharmaceutical and biotechnology clients while at public relations firms including Ketchum, FleishmanHillard and Cohn & Wolfe. She then worked as a consultant for government and nonprofit clients, including the Centers for Disease Control and Prevention (CDC), on behavioral change challenges ranging from HIV/AIDS to COVID-19. Spoeth has implemented, evaluated, and managed dozens of projects that improved health outcomes. Her capabilities include formative research and digital outreach.

René Nutter is the U.S. Food Security & Agriculture Client Account Lead. She has more than two decades of experience helping further food security and education in women and children. From studies with Yale, Harvard, and the Gates Foundation to a long and successful partnership with the USDA Food and Nutrition Services (FNS), she has led large data collection studies and evaluations, provided technical assistance, and helped train the next generation of researchers.

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.