Executive Leadership

Click on each image to read staff biographies or scroll down to learn more about our practice leaders and business and corporate development team.

Frank Abramcheck	Douglas Beck	Michael Byrne	Gerald Croan

Ellen Glover	Judith Kassel	Sudhakar Kesavan	Philip Mihlmester

Sergio Ostria	Isabel Reiff	Alan Stewart	Anita Tallarico

Jeanne Townend	Miriam Wardak	John Wasson	Donald Zimmerman

Sudhakar Kesavan
Chairman & Chief Executive Officer

Sudhakar Kesavan serves as the Chairman and CEO of ICF International. In 1997, he was named President of the ICF Consulting Group when it was a subsidiary of ICF Kaiser. In 1999, the Group was divested from Kaiser and became a wholly owned subsidiary of the Company through a joint effort of the management and CM Equity Partners, and ICF International was launched as an independent company.

Mr. Kesavan received his Master of Science degree from the Technology and Policy Program at the Massachusetts Institute of Technology (MIT), his postgraduate diploma in Management from the Indian Institute of Management, Ahmedabad, and his Bachelor of Technology degree (chemical engineering) from the Indian Institute of Technology, Kanpur. Mr. Kesavan serves on the Board of the Rainforest Alliance, a New York based nonprofit environmental organization committed to protecting ecosystems by transforming land-use practices, business practices, and consumer behavior. 

In 2007, Washington SmartCEO honored Mr. Kesavan as one of the Future 50, the magazine’s honor to chief executives of the Washington metropolitan area's fastest growing companies. Learn more about Mr. Kesavan and ICF International.

John Wasson
Executive Vice President - Chief Operating Officer

John Wasson, an Executive Vice President, has been with ICF International since 1987. He leads the Company's seven practices. He holds a M.S. in Technology and Policy from the Massachusetts Institute of Technology and a B.S. in Chemical Engineering from the University of California, Davis.

Alan Stewart
Chief Financial Officer

Alan Stewart serves as Chief Financial Officer and has been with ICF International since 2001. Prior to joining the Company, Mr. Stewart was chief financial officer at DataZen Corporation, Blackboard, Inc., and Deltek Systems, Inc., which he helped take public in 1997. Mr. Stewart received his B.S. in Accounting from Virginia Commonwealth University and is a Certified Public Accountant.

Judith Kassel
Executive Vice President - General Counsel

Judith Kassel joined ICF International in 2007 as General Counsel to lead corporate governance initiatives and merger and acquisition activities. Ms. Kassel also was named the secretary of the board of directors at ICF. She has served as deputy general counsel at CACI International and general counsel at GTSI, Corp. Ms. Kassel has a Juris Doctor from National Law Center, George Washington University, and a B.A. from Macalester College.

Miriam Wardak
Senior Vice President

Miriam Wardak joined ICF International in 2006 as the Senior Vice President of Human Resources. Prior to ICF, Ms. Wardak served as senior vice president at I2 Technologies, where she facilitated the company's global transformation from a functional product-focused organization to an industry-based solutions provider. She holds an M.B.A. from the University of Dallas and a B.A. from George Mason University.

Business & Corporate Development

Dr. Douglas Beck
Senior Vice President

Douglas Beck has been with ICF International since 1995. He is the Director of Corporate Development. Prior to joining ICF International, he held executive positions at DRI/McGraw-Hill. Mr. Beck has a Ph.D. and M.A. in Political Science from the University of Rochester, M.B.A. in International Business from Columbia University, and B.A. in Economics and Political Science from the University of Michigan.

Michael Byrne
Senior Vice President

Michael Byrne joined ICF International in 2006 with extensive public service experience in regional preparedness, response, recovery, and information sharing. He is senior advisor for Emergency Management and Homeland Security. His career ranges from managerial and advisory roles at Microsoft Corporation, The White House Office of Homeland Security, and the U.S. Department of Homeland Security, to 20 years as a firefighter and executive with the New York City Fire Department. Mr. Byrne holds a B.A. from the City University of New York at Queens College.

Isabel Reiff
Senior Vice President

Isabel Reiff joined ICF in 1989 and has more than 30 years of experience in public policy and program consulting. She leads the firm's government sector business development. At ICF she has managed client engagements in housing and community development, environment, and transportation. She has also held positions with federal and local governments. She holds a B.A. from Mount Holyoke College and an M.A. in Architecture and Urban Planning from the University of California, Los Angeles.

Donald Zimmerman
Executive Vice President

Donald Zimmerman is the former CEO of Synergy, Inc., which was acquired by ICF International in 2005. He is the Director of Strategic Initiatives for ICF International and has performed and led numerous client engagements in public policy, program analysis, and economics. He has held economic policy positions at the White House and at the Federal Trade Commission. Mr. Zimmerman holds both a B.S. and an M.S. in Economics from Illinois State University.

Practice Leaders

Dr. Frank Abramcheck
Senior Vice President
The Road Home Program

Frank J. Abramcheck has 25 years of executive leadership, with extensive experience in large-scale information technology and program management solutions in both the public and private sectors, including managing some of the largest IT outsourcing programs in the United States. He currently leads The Road Home program—the largest single housing recovery program in U.S. history—a federally funded initiative being implemented by ICF International for the State of Louisiana to assist homeowners and rental property owners in rebuilding following the devastation of Hurricanes Katrina and Rita. Dr. Abramcheck holds a Ph.D. and M.S. in Physiology from the University of Illinois and a B.A. in Biology from Temple University.

Gerald Croan
Executive Vice President
Strategic Enterprise Services

Jerry Croan is the former founder and president of Caliber Associates, which was acquired by ICF International in 2005. He is a leader in the design and assessment of effective human services program and has been recognized for his innovative, client-focused work by the U.S. Departments of Defense, Justice, and Health and Human Services. He holds a B.S. and a M.C.P. (city planning) from the Massachusetts Institute of Technology (MIT).

Ellen Glover
Executive Vice President
Technology & Management Solutions

Ellen Glover joined ICF International in 2005 and has 25 years of professional experience in information technology in the U.S. Federal Government market. She received the Federal 100 Eagle Award in 2001 for her efforts to improve communication between government and industry and is past chair of the Industry Advisory Council (IAC). Ms. Glover holds B.A. and M.S. degrees from the University of Pittsburgh.

Philip Mihlmester
Senior Vice President
Energy & Resources

Philip Mihlmester joined ICF International in 1999 and has 30 years of experience in the technical and management direction of engagements in the energy, environmental, and quantitative analysis areas. He also has held executive positions at Aspen Systems and Applied Management Sciences. Mr. Mihlmester has an M.S. in Operations Research from George Washington University and an A.B. in History from Columbia.

Sergio Ostria
Senior Vice President
Environment, Transportation, & Regulation

Sergio Ostria joined ICF in 1999 and has more than 18 years of experience with federal, state, and local governments in the U.S., Latin America, Europe, and Asia. His client engagements have focused on the nexus between transportation policies, plans, regulations, projects, and the natural and human environment. Mr. Ostria has an M.A. in Economics from The George Washington University and a B.A. in Economics from University of Maryland.

Anita Tallarico
Senior Vice President
Emergency Management & Homeland Security

Anita Tallarico joined ICF International in 1992. She is a Certified Emergency Manager with 20 years of experience in all-hazards emergency management and has spent her career working at the nexus of public policy and public safety both in government positions and in the private sector. Ms. Tallarico has an M.S. in Planning from Florida State University.

Jeanne Townend
Senior Vice President
Human Services & Community Development

Jeanne Townend first joined ICF in 1990 and has more than 20 years of experience in consulting management in the government, commercial, and nonprofit sectors. She specializes in the nexus between these sectors and the successful implementation of public-private partnerships. She holds an M.A. in Economics from Brown University and a B.A. in Economics from the University of Rochester.