TANGO is a dynamic and growing team, including a network of consultants from around the world. TANGO works with a core team of 20 consultants who are dedicated to five to six projects per year. In addition, TANGO’s roster has over 50 consultants to draw upon for the technical needs of specific projects. Established in 2000, we are headquartered in Tucson, Arizona, USA with a regional office in Bangkok, Thailand.


Executive Officers

  • Tim Frankenberger, President
  • Jeanne Downen, Vice-President
  • Mark Langworthy, Vice-President
  • Bruce Ravesloot, Vice-President
  • Phil Sutter, Vice-President


  • A.K.M. Towfique Aziz, Design, Monitoring and Evaluation Specialist
  • Lloyd Owen Banwart, Economist
  • Tom Bower, Economist
  • Vicki Brown, Research Methodologist
  • Niloy Krittika Chowdhury, Research Assistant
  • Elizabeth Cuellar, Research Associate
  • Padraic Finan, Research Consultant
  • Karyn Fox, Senior Research Specialist
  • Barbara Huddleston, Senior Food Security Expert
  • Jeremie Kaelin, Research Associate
  • Stephanie Martin, Senior Research Consultant
  • Monica Mueller, Senior Technical Advisor
  • Edith Mutalya, Senior M&E Specialist TOPS Program
  • Suzanne Nelson, Senior Research Scientist
  • Carrie Presnall, Research Associate
  • Lisa Smith, Research Consultant
  • Raniya Sobir, Research Associate
  • Maryada Vallet, Design, Monitoring and Evaluation Specialist
  • Lisa Woodson, Research Consultant


  • Lindsey Deeren, Accounts & Contracts Manager
  • Neena Murickan, Business Analyst
  • Dennisse Valdez, Office Coordinator

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Current Staff Opportunities

None at this time.