Our Team

Our Academic Expeditions team professionally infuses academic learning with fun and exciting travel experiences. Our hands-on expeditions take you beyond the school walls and make learning relevant and personal. We believe in the perspective-shifting potential of transformative travel education, and embrace learning while exploring a variety of landmark and cultural destinations.
Browse the profiles below to get to know the people who make up our team:

Andrew Selinka

Managing Director

Andrew grew up near New York City and founded Academic Expeditions in 2003 after working with many different educational travel tour companies and international schools over the years. He realized that there was a real need for a company that offered high quality travel experiences delivered with integrity and a focus on the clients needs. Andrew is proud of what he and his incredibly talented staff at Academic Expeditions have been able to create, and the team’s commitment to providing exceptional educational travel experiences for each and every client.
International Programs: Discovery Expeditions(opens in a new tab)

Email Andrew

+1 917.520.5453

Kara Williams

Managing Finance Director

Kara grew up in Charlottesville, Virginia. She is a 1999 graduate of the University of Virginia. Kara spent 9 years working as an underwriter for a large insurance company. After being introduced to educational student travel she decided to leave the corporate world to pursue a career as a financial officer with Academic Expeditions. Kara and her family reside in central Virginia where they can be found spending time between the beaches on the Eastern Shore and the Blue Ridge Mountains near their home.

Email Kara

+1 917.608.4177

Isaiah Mosteller

Director of Systems, Guide

While Isaiah grew up in rural Oklahoma, curiosity for the larger world was planted in him. In college, he earned a BS in Elementary Ed and a Masters in Parks, Recreation, and Tourism, and found the global education of travel and cultural exchange. His experiences abroad include working in the UK, Peace Corps in the Marshall Islands, recreation work in Japan, and cultural explorations of Latin America. These have inspired him to both plan and guide relevant travel experiences for others for over 20 years.  Isaiah, his wife and son live in Asheville, NC where they enjoy being outdoors, playing music with friends, and partaking in the creative vibe of the area.

Email Isaiah

+1 917.608.3736

Rebekah Hancock

Managing Director of Logistics

Rebekah grew up in Rocky Mount, North Carolina. She is a 2006 graduate of Peace College with a Bachelor’s Degree in Business Administration and Leadership Studies. Rebekah has 5 years of corporate experience in marketing and operations. However, travel has always been a large passion in her life and has led her to pursue her interests by joining Academic Expeditions. Rebekah currently resides in Raleigh, North Carolina.

Email Rebekah

+1 917.608.0947

Tracy Roderick

Managing Program Director & Guide

Tracy was born in Washington, DC and now resides in quiet Chesapeake Beach, Maryland. Tracy started out in the group travel industry right out of high school by working at her family-owned motor coach company. She later became the operations manager and after 22 years she decided to pursue her love of Washington and American history by becoming a DC Tour Guide. She loves sharing her love of history and the city with groups of all ages! When she is not guiding, you will find her at home with her sweet Golden Retrievers, Kirby & Murph.

Email Tracy

+1 917.608.3745

Aaron Mertig

Program Director & Guide

Aaron grew up in very rural Northern Wisconsin, an hour south of Lake Superior, and has a Bachelor’s Degree in Education. After teaching middle school social studies for six years, he successfully transitioned to tour guiding which quickly became his love. After being a tour director for more than 10 years, which included being a licensed guide in Washington, DC, he was seeking some balance in his life. He was excited to join the Academic Expeditions team as a Director of Program Development and share his passion. Aaron, his 4 kids and their weiner dog, Oscar, currently reside in Hudson, WI.

Email Aaron

+1 917.608.3474

George Mastrovaselis

Program Director & Guide

A product of the Midwestern United States, George has devoted his entire professional career to education and travel. With a bachelors in International Relations and a Masters of Science in Education, George synthesizes these two fields to motivate young adults to explore the world. He believes there is fun, beauty and knowledge to be found in all places…one just needs to seek it out. Although his pastime is exploring the ‘out of reach’ places, he is just as comfortable at the local county fair or neighborhood barbecue.

Email George

+1 917.608.6896

Adrian DaSilva

Program Director & Guide

Adrian was born and raised in Hong Kong. With a BSEE and an MBA, he spent time working as a software engineer in Silicon Valley. He spent 2 years traveling around the world, and that love of travel eventually led him to becoming a tour guide. In addition to being ITMI certified, and having both DC and NYC guide licenses, he also speaks 3 languages. In his spare time, you’ll find him helping out at his parish church, hiking, reading, and designing escape room experiences. He’ll also be searching for the best places for ice cream, chocolate, candy, and bubble tea!

Email Adrian

+1 917.525.9066


Program Director & Guide

Bob was born in Savannah, GA and raised in the mountains of Western NC. After graduating Mars Hill College in Business Administration, he worked at Biltmore Estate in Asheville, NC. As an ITMI certified guide and tour director, he has lead educational tours in Washington, DC, among other historic sites, for over 16 years.  He is an avid lover of history particularly the Civil War era. He enjoys playing guitar and seeing many concerts, traveling extensively (Iceland being his favorite so far), and eating good local food. He and his wife Rachel have many adventures together both traveling and at home with their new daughter Ruby and golden retriever Rory and their crazy tuxedo cat Frida.

Email Bob

+1 917.717.1006

Johanna Denowitz

Program Director & Guide

Johanna is a New England native now residing in Alexandria, Virginia. She attended college at both The State University of NY at Delhi and UMass Amherst, earning an AAS and BS in veterinary studies. She spent a semester abroad interning at Currumbin Wildlife sanctuary on Australia’s Gold Coast, and this really punctuated her love for experiential travel. In 2008, Johanna attended ITMI, where she became certified tour director, holding a guide license in Washington, DC. Guiding has taken Johanna up and down the eastern seaboard to cities like Boston, NYC, Philadelphia, and DC as well as colonial sites and battlefields.  In her spare time, she enjoys chasing the snow to downhill ski, backpacking, and traveling all over the globe in search of beautiful places and delicious food!

Email Johanna

+1 917.628.9575

Erica Rozek

Program Director & Guide

Erica is a native of the Washington DC area. She received a BA in Historic Preservation from Mary Washington College and has been working in the travel industry ever since. She enjoys guiding student groups, individuals and families around her home area in the Mid-Atlantic, as well as many other sites of cultural and history importance up and down the East Coast. Along with program facilitation she has experience in curriculum development with both students and adults. In her free time she enjoys planning her own travel adventures and spending time riding and competing her two Off the Track Thoroughbreds.

Email Erica

+1 917.628.9063

Katie Fields

Finance Director

Katie was born and raised in South Carolina, but has been enjoying her time living in Asheville, North Carolina for the past 3 years. She was drawn to Academic Expeditions due to her love of travel and outreach to young people following their dreams and wanting to explore the larger world. Katie has an extensive background in customer support in various trades and is excited to bring her experience to a new field. In her spare time, you can find her enjoying the eclectic cultural life of Asheville and the beautiful natural scenery offered by the Blue Ridge Parkway and the surrounding Appalachian Mountains, and spending time with her fur babies (Zeus and Marley), or catching a flight with her wife to explore a new destination.

Email Katie

+1 917.626.4742

Andrea Burk

Program Director

Andrea, a native of North Vancouver, British Columbia, Canada travelled the world for ten-years as a high-performance athlete. No stranger to education, group travel, coach busses, hotels and learning about the experiences of others in our global community she appreciates that no travel experience is the same for any two groups. After completing a Master of Arts in Leadership Andrea learned quickly that to know about something is not the same as coming to know it through experience; which is why she is proud to help deliver exceptional educational travel experiences that enhance connections with people, places and things, and transform the world around us.

Email Andrea

+1 917.613.1224

Tim Krepp

Managing Director of Operations

Tim has worked in student travel for almost two decades, beginning with showing visitors around his hometown of Washington, DC and eventually leading to fascinating travel across the globe. Born in New York and growing up in North Carolina, he came to DC to study history at George Washington University. Finding himself at home in the nation’s capital; he returned (after a spell in the Navy), married, and raised two kids on Capitol Hill. In addition to a passion for travel, Tim enjoys backpacking. kayaking, writing, and traipsing through old cemeteries

Email Tim

+1 917.828.4178

Elaine Elliott

Finance Director

Elaine was born in Washington DC and now resides in Huntingtown, Maryland with her husband and 2 children. Elaine appreciates time spent with family and has enjoyed volunteering with her children’s many school events in the classroom, field trips, and travel sport tournaments. Over the years, Elaine has worked in many trades gaining experience with a wide variety of skills. But found herself always coming back to her love of children and their education, so much so that she began working for the local public school district. In her free time she enjoys DIY projects with her husband, traveling, cooking/baking, She is excited to begin this exciting new chapter with AE.

Email Elaine

+1 917.828.4392

Elitsa Somleva

Program Director

Elitsa was born and raised in Bulgaria and travel has always been a big part of her life. She received her Bachelors in Italian and Masters in Alternative Tourism and she has over 6 years of experience developing programs in the United States and Canada for international visitors. Her other big passion is food and she strongly believes that the best way to experience new cultures and places is through their cuisine. When she is not planning the next trip, you can find Elitsa urban hiking in search of the most buttery croissant.

Carrie Baker

Finance Director

Carrie is a Maryland native who resides in Annapolis. With a BA in Public Administration and Policy and an AA in Equine Science, she has worked in various fields over the years but has always had a love of education and travel. In her spare time, you can find her planning her next adventure – a local weekend road trip or exciting International travel? Both are great! She also enjoys spending time with her horse, Stella and rescue pup, Milo.

Email Carrie

+1 917.608.2039

Marlee Gordon

Assistant Operations Director

Marlee is joining the Academic Expeditions team after completing her MS in Higher Education Administration. She is Certified in Ropes Course Facilitation and Group Dynamic/Team-Building Facilitation. Marlee has spent most of her summers at camp and plans to bring the same love and magic to the AEI team. Marlee will be based out of her home state of Georgia and is excited to discover the world, one expedition at a time.

Email Marlee

+1 917.608.0530

Jennifer Turner

Finance Director

Jennifer was born in Toms River, New Jersey and now resides in Charlottesville, VA with her husband and twin daughters. She has combined experience in customer service, education, and various outreach programs. Jennifer was a home educator to her daughters and also taught at their homeschool cooperative for 4 years.  She is bringing her passion and love of learning all things fun and new to the Academic Expedition team.  In her spare time you can find her Kayaking with her family, enjoying the local food and views of the Blue Ridge Mountains, and just hanging out with her dog and 2 ducks.

Email Jennifer

+1 917.932.3237

Sydney Rose Davis

Special Programs Director

If you were to ask Sydney where home is, she would say wherever her feet are currently standing and in the hugs of friends across the globe. While she grew up in Spokane, Washington she has spent the past decade teaching outdoor and environmental education across the US and in New Zealand. Aside from work inspired travel, she has also spent many seasons solo traveling across Latin America and Europe. Most recently she has found herself in Alaska, coordinating tour groups by day and hula hooping around the boreal forest by night. These varied global experiences have lead Sydney to her belief that connection with community and place are the secret to happiness.

Email Sydney

+1 907.251.0395

Emilia Cedron

Operations & Program Director

Emilia grew up in Los Angeles and moved to Wisconsin where she stayed until she graduated from university with a degree in Elementary and Middle School Education. She then traveled the world teaching in various countries until she found herself on a riverboat on the Danube working as the director of the Multi-generational Family program onboard. It was then she decided to leave the classroom and enter the world of student travel. She’s been in the tourism industry for seven years. She now lives in Saint Paul, Minnesota with her partner and their two children.

Email Emilia

+1 917 620 1543

In Addition to our full time Staff, these partnering staff are responsible for various Special Projects


Director of Culture + Program Development

Hannah Feldberg-Dubin’s early experiences at summer camp and youth leadership led her to become the group facilitator and organizational consultant she is today. Hannah earned a Bachelor of Recreation Management at Acadia University and her Master’s in Leisure Studies at the University of Waterloo. In her master’s thesis titled “S’more Than Just Fun and Games”, she focused on understanding Positive Youth Development, Optimal Learning, Youth Programming, Experiential Education, and Knowledge Transfer exploring the impact of informal education programs. Hannah brings 15 years of design experience to creating intentional travel opportunities for our groups. When Hannah isn’t planning engaging trip programming with us, she’s either running her facilitation consulting firm, The Group Forward, or is running after her two young boys in Brooklyn, NY.


Associate Program Specialist

Wendy grew up in Southern California, and currently resides in the Boise area of Idaho with her husband and 3 daughters. Academic Expeditions has provided the opportunity to work with the perfect blend of 3 of her greatest passions: young people, education and travel. A 13 year homeschool veteran, Wendy is especially excited to assist homeschool students, families and groups plan their trip of a lifetime. When she is not working, Wendy can usually be found completing her degree in business management, playing keys and singing in her band or hanging out with her family.

Need More Information? Get In Touch!