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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.

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.

ZeAmma Brathwaite has over 20 years of experience partnering with private organizations and federal agencies to improve access to care and health outcomes for individuals and communities. A certified project management professional, Brathwaite has extensive experience leading multidisciplinary teams in the design, implementation, and evaluation of complex, large-scale transformation efforts using improvement science methods and tools to accelerate change.

Michael Dumlao is Vice President of Global Marketing and Communications, overseeing the company’s brand evolution and future marketing vision and strategy. He came to Abt from Booz Allen Hamilton, where he led the Fortune 500 company’s rebrand as their first Director of Brand, served as a Senior Brand and Diversity Advisor for leaders in the Federal Government, and was the longest-serving leader of GLOBE+, their LGBTQ+ business resource group. He oversaw brand strategy, market research, and creative activation.

Lauren Pittenger comes to Abt with more than 20 years of experience working in or as a consultant to federal government agencies. She has strong grounding in research and research-based consulting to government clients. She also has extensive experience leading and growing business, managing technical and scientific projects, and coaching and supporting account teams. She has served as a director at Guidehouse, scientific program manager at Booz Allen Hamilton, and lab manager at the U.S. Department of Agriculture. She has worked with the Centers for Disease Control and Prevention (CDC), Food and Drug Administration (FDA), the Canadian Public Health Laboratory Network, the Gates Foundation and the Association of Public Health Laboratories.

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. 

Maria-Paz Barrientos has more than 20 years of management consulting experience advising C-Suite leaders and senior U.S. government officials on strategic planning, organizational transformation, and change management. She has extensive experience managing programs, projects, and people, including defining scope and level of effort, governance, mitigating risk, and producing impact with high quality project deliverables.

Paul Anninos, who has more than 30 years of business and operational leadership in the public and private sectors, is Abt’s vice president and leader of Abt’s domestic U.S. environment business, including environmental program management, data and technology solutions, regulatory development and technical assistance, natural resource management, and climate and energy programs.Before joining Abt, Anninos served as chief growth officer and vice president for business development and marketing at REI Systems. He led growth initiatives that helped to establish REI as a leading information technology and business solutions provider, significantly expanding the company’s government business and nearly tripling its revenues to $90 million.

Mariandrea Chamorro has 20 years of experience managing international development programs. She has provided oversight for the high-quality and compliant execution of large flagship USAID programs while contributing to business development. Chamorro’s areas of expertise include prevention of vector-borne diseases, infectious diseases, maternal and child health, and health systems strengthening. Her clients have included the U.S. Agency for International Development (USAID), the Australian Department of Foreign Affairs and Trade (DFAT), and the UK’s Foreign Commonwealth & Development Office (FCDO).