MICHEL PETRO  -  Accounting Team Lead

Michel has lived abroad in Finland, Brazil, Belgium, and Austria. During his time overseas, Michel worked for various organizations and companies and started a jewelry design business. Michel speaks five languages fluently - Arabic, Hebrew, English, German and French - and has some fluency in Portuguese. Michel received a Bachelor’s degree in International Hospitality Management in Brussels, Belgium, as well as an Associate's Degree in Hotel, Restaurant and Institutional Management from Penn State University.  He is a State Department EFM. 


TIFFANY HUGHES  -  Operations Manager for Virginia

Tiffany Hughes grew up in New Mexico where she received a Bachelor's Degree in General Business.  After completing her degree, she volunteered with her husband in Guatemala before he joined the Department of State.  They have lived in Cape Verde and Italy. During her time in Rome, she pursued a Master's Degree in Global Business Management.  Her previous professional experience includes work in customer service for a small business.  She enjoys hiking, sightseeing, and watching movies with her husband and two daughters.  Tiffany is a State Department EFM.

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MANDI WOLFES  -  Operations Manager for Washington D.C./Maryland

Mandi Wolfes grew up in the San Francisco Bay Area and earned her Bachelor's Degree from the University of Washington in Seattle.  She lived in Granada, Spain, and spent 5 summers volunteering in public health projects through the Amigos De Las Americas program in Paraguay, Mexico, Ecuador, and Costa Rica.  Teach for America brought her to Baltimore to teach middle school Spanish, after which, she transitioned to working as a Housing Counselor for local non-profit organizations.  Mandi is fluent in Spanish, with a rusty command for American Sign Language and Portuguese.  She lives in upper NE Washington D.C. with her spouse and 2 elementary-aged children.  Mandi enjoys traveling, playing volleyball, trying weird foods, playing board games, fiddling with spreadsheets, and trying to convince people that her jokes are funny (they really are!)


JULIANA KRAUSS GREY  -  Billing and Advertising Specialist

Juliana is originally from São Paulo, Brazil.  There she worked with customer services for many years before she received a Bachelor’s Degree in Pedagogy and started working as a preschool teacher.  She came to the United States as an Au Pair in 2009.  After the Au Pair program, she worked in a preschool and taught Portuguese in Virginia.  Juliana is a State Department EFM and has lived in Turkey with her family.  She is completing another Bachelor’s Degree in General Studies with a concentration in Public Relations.

RENEE ARIGONI  -   Partner and Office Manager

Renee was born and raised in Silicon Valley, California before it was Silicon Valley. She received her BA in International Studies from the University of Washington, studied abroad at the American University of Cairo, and obtained her MPA in International Management at the Monterey Institute of International Studies. After working in Middle East development for several years, she started her own Residential Professional Organizing business before coming onboard with GTP.  For 10 years, she lived in, renovated, and now manages her property in the Shaw neighborhood of DC, as well as a home in California, so she understands what it's like to have rental properties and managing from afar.  She currently lives with her husband and two kids in Arlington, VA.