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Staff Members

Mr. Hitesh Dev

Franchisee and Center Director

Mr. Hitesh Dev is an innovative professional services director with track record of developing strategy and leading execution of tasks, outputs, and features that deliver value and increased efficiency within the product delivery and management of systems and services. His education includes a Master’s degree in Computer Science and an undergraduate degree in Production Engineering. Over the span of his career, Hitesh has worked with organizations such as Deloitte, US Department of Defense, USAID, FDA, NIH, Gartner U.S Department of Labor and USPS to name a few. Hitesh Dev is a published author of a realistic fiction titled "To H-1B or Not to Be" and has been a Deloitte Faculty in the past. He is also a co-founder of a technology consulting firm and a successful Indian restaurant chain called “Masala Country”.

Mr. Pavan Jain

Franchisee and Center Director

Pavan Jain is an Analytical Software Architect, with over 20 years’ experience in designing and implementing software for complex embedded system using C and C++. He holds a Master of Science degree in Computer Science and is Engineering Management certified professional. Over the year he has worked for Mid-size corporation ’s and startups, he was also a Co-founder of startup Institutec Inc. He likes spending time with family (Wife and 2 Boys 10 and 4 years old) and is also a coach for soccer U10 boys’ team.

Ms. Sarah Christensen

Python and Science Instructor

Ms. Sarah Christensen has a strong background in STEM fields as well as pedagogical practices. She graduated from Virginia Tech with a MS in Geology and a Certificate in Pedagogy. She has honed her teaching skills throughout her 5 year professional career working in a variety of museums. She enjoys working with kids and keeping them engaged. She oversees the instructors and is a friendly face you will often see at the center. She has been an instructor with Stemtree since 2020 leading python classes especially, and a manager since the beginning of 2021. For the past 2 years she has also been a mom to lovely twins.

Mr. Rakesh Misra

Science Instructor

Mr. Rakesh Misra holds a Bachelor of Science degree and is a professionally trained science teacher. He has the experience of teaching science subjects to Elementary, Middle and High schools students and a passion for teaching and helping children to frame and realize their goals.


Mr. Andrei Sigunov


Andrei has a strong backgrounds in pedagogical and psychological fields. Graduated with BS in educational psychology, Andrei is pursuing his degree in organizational psychology now. Having an experience working with children of different age, allows him to use various educational strategies in order to help our students to achieve the highest educational goals. Since January 2022 Andrei also performs management tasks in our center.


Ms. Reha Iyer

Computer Science Instructor

Rhea is a current senior at John Champe High School and the Academy of Engineering and Technology and is a coding instructor. With countless years of experience in various languages like Java and Python, Rhea is an avid coder who is elated to share her enthusiasm for computer science and technology with her students!

Ms. Alex Zhou

Coding and Robotics Instructor

Ms. Alex is a George Mason University Senior pursuing her degree in Information Systems. She is passionate about Java, Python and her excellent communication skills makes her a favorite with kids. She has excellent data analytics and accounting skills to complement her technology skills.

Sneha Gatuku


Hey! My name is Sneha Gatuku and I am an undergraduate at VCU. I joined STEMtree a year ago because of my enthusiasm with kids and passion for STEM. Some of my favorite subjects that I like to teach here are math and science. I hope to bring change at STEMtree and make it grow to the fullest potential it has!

Best Summer Camp
4th Year in a Row!

Stemtree Featured on Local TV

Stemtree featured in Vienna Connection

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Stemtree of Falls Church selected 2019 Best Education Center