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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. 

Dr. Hecht is an environmental economist with more than 19 years of experience in economic analysis, policy analysis, and research. His primary areas of expertise are in environmental economics, cost-benefit analysis, regulatory economics, and decision analysis. Dr. Hecht is an expert in estimating the monetary value of “non-market” benefits, such as improvements in environmental quality, public health, safety, and security. Dr. Hecht has over 10 years of experience in the economic analysis of climate change and in evaluating the costs and benefits of climate change mitigation measures.

Stan Crock has more than 40 years of writing experience, including three decades as a journalist for major news outlets, more than a decade of proposal writing, and marketing and communications experience. He has written for such outlets as Business Week, The Wall Street Journal, The Washington Post, The New York Times, The Associated Press, The New Republic, Investopedia, TheStreet.com, and bestsories.ca. He has worked on proposals for Accenture, McKinsey, IBM, Abt Global, and other firms. Crock has worked in marketing and media relations for Abt since 2018.

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.

Natalie Arthur is a public health consultant with 20 years of experience working across health and human services sectors in Australia, Afghanistan, Bangladesh, United Kingdom, and United Arab Emirates. Natalie has led numerous complex program evaluation, review, and service development projects for Commonwealth, Australian state and territory government, and non-government organizations. She specializes in health, mental health, and disability. Natalie led the data scenario modelling of a further eight health service plans in Victoria and South Australia. As she worked on more than 40 projects, she built invaluable technical and project management experience supporting clients through the translation of complex methodologies into clear, utilization-focused recommendations.

Baris Yener has more than 25 years of experience in executive leadership, growth strategy development, and organizational transformation. His business-development and project work has involved a wide range of clients, including the World Bank, Department of Defense, Department of Homeland Security, Centers for Disease Control and Prevention, and other private sector and federal agencies.Yener oversees Abt’s business development, strategic growth, marketing, and communications. In this role, he will accelerate growth through partnerships with business and capability leaders across industry and within the firm.

Jacqui De Lacy is responsible for leading Abt’s development and technical services in alignment with its mission and values. She has a deep practical understanding of development issues and operations and has the capacity to shape, implement, and review individual programs and large development portfolios in ways that maximize impact.Jacqui possesses excellent leadership and management skills and is a thought leader on development issues in the Asia Pacific region. She often is invited to speak at conferences and events on international development and can engage effectively with the media and with a broad range of stakeholders.

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. 

Chris Grier, Vice President, Legal and Risk, leads the legal, governance, privacy, insurance, contracts, innovative finance, risk, compliance, and audit functions supporting corporate and program operations of Abt Australia and Abt Britain across more than 30 countries. He is also the Company Secretary of Abt Australia and Abt Britain.

Dr. Zarrar Khan brings over a decade of experience in climate and energy modeling and advancing sustainable energy solutions, climate mitigation, and resilience initiatives worldwide. He has worked in the U.S., Latin America, Europe, the Middle East, and Asia to help transform groundbreaking research into tangible global impact. Khan has played pivotal roles in developing national climate strategies, enhancing local capacities, and fostering lasting stakeholder relationships. His collaborative efforts to address complex challenges include working with the World Bank, Green Climate Fund, World Resources Institute, U.S. Agency for International Development (USAID), Department of Energy (DOE), Department of State (DOS), and Inter-American Development Bank (IDB). Khan’s scholarly work has been cited over 600 times, demonstrating his impact on global climate resilience and policy development.