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Founder & President • Puzzle Team

Joy Shi

Joy is the founder and president of INTEGIRLS Inc. She first began competitive math in middle school, but she's been passionate about STEM for as long as she can remember. Her experience at Math Prize for Girls -- the premier all-girls math competition -- inspired her to create a similar community of girls, but open to all. She is a sophomore at California Institute of Technology (Caltech).

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Executive Director • Philly Chapter

Hannah Gao

Hannah Gao is a senior at Harriton High School. Ever since she discovered her passion for math, she has participated in numerous math clubs and competitions, including Mathcounts and AMC. She has also qualified for the AIME and Math Prize For Girls competition. Hannah was inspired to join the INTEGIRLS community after participating in one of the puzzle hunts, and has since been dedicated to promoting its mission of bridging the gender gap in problem-solving. In her free time, Hannah loves playing violin, playing tennis, and coding!

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CFO • Website Manager • Bay Area Chapter

Michelle Han

Michelle Han is a sophomore at Granite Bay High School. She is passionate about minimizing the gender gap in math and fostering a math-loving community for females & non-binary students. She has qualified for AIME and has participated in MATHCOUNTS State. Aside from math, Michelle enjoys playing tennis & reading webcomics!


Tech Director • D.C. Chapter

Marina Lin

Marina is a sophomore at Thomas Jefferson High School for Science and Technology. She is passionate about math and hopes to inspire other students in STEM. She was a member of the National MATHCOUNTS team from Virginia and was given the MAA Young Women in Mathematics Prize. She has been qualified for AIME and Math Prize for Girls at MIT.

Besides math, Marina is an avid golfer. She also enjoys reading and writing!


Stats Director • STL/MO Chapter

Shubha Gautam

Shubha Gautam is a rising junior in Columbia, MO. She likes to read National Geographic, go on walks, and bird band in my free time. She loves teaching math and is very passionate about INTEGIRLS’ cause!



Chapter Head Advisor • DC Chapter

Julie Steele

Julie Steele is a senior at Georgetown Day School. She loves stumping herself with hard math problems, doing experiments with planaria in her basement, programming, being with friends, and dancing. An avid competitor in math competitions, she participated in Math Prize for Girls 2019 and 2020, and has qualified for AIME since 2019. INTEGIRLS spring 2020 was her first experience with puzzles, and she's enjoyed writing and solving them since.

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Chapter Head Advisor • Houston Chapter

Ramya Iyer

Ramya is a freshman at Stanford University. She fell in love with mathematics during her middle school years and has participated in numerous city, state, and national-level math competitions. In her free time, she enjoys listening to music, watching thrillers, and playing with her yorkipoo.



Harini Venkatesh

  • Director of Problem Writing Operations

Jieun Lim

  • Director of Problem Writing Outreach

Josephine Lee

  • Problem Writer

  • Website Manager

  • NYC Chapter Head

Nicole Li

  • Problem Writer

  • STL/MO Chapter Head

Sanya Badhe

  • Problem Writer

  • Scoreboard

  • Bay Area Chapter

Ryka Chopra

  • Problem Writer

  • Bay Area Chapter

Harini Venkatesh

  • Problem Writer

Emily Xia

  • Problem Writer

Rebecca Chang

  • Problem Writer

Zaee Shah

  • Problem Writer

Xinghui Xu

  • Problem Writer

Iris Zhou

  • Problem Writer

Sargam Mondal

  • Problem Writer

Stephanie Mei

  • Problem Writer




Puzzle Team


Adam is a freshman at college who enjoys writing puzzles, even if he’s a bit slow at solving them. He studies science at university.


Puzzle Team

Laura Yao

Laura Yao is a sophomore at Carnegie Mellon University. She has participated in many different puzzle hunts and is also a big fan of jigsaw puzzles. Laura has competed in various math modeling competitions at the national level and loves programming. She studies computer science.

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Puzzle Team

Matthew Siff

Matthew Siff is a freshman at Yale University. He came to puzzle-solving through quizbowl, where he has placed in the top 10 nationally in both team and individual competitions. In his free time, Matthew is a frequent (although not particularly excellent) solver of the New York Times Crossword. 


Puzzle Team

Shrikar Vasisht

Shrikar Vasisht is a sophomore at University of Maryland. He has been doing puzzle hunts since last year. Shrikar competes in many cybersecurity and programming competitions, and loves to do math. He studies computer science.


Puzzle Team

Vishal Kanigcherla

Vishal Kanigicherla graduated TJHSST in Alexandria, Virginia in 2021. He became interested in puzzle-solving through his experience with in-school competitions and through his time playing quizbowl. Vishal spends his time reading up on neuroscience and having fun with puzzles and games.

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Puzzle Team

Zain Majumder

Zain Majumder is a sophomore at University of Maryland studying Computer Science. He has been doing competitive math and programming since middle school, and has been captain of his high school's math team for two years. He enjoys all types of puzzles, but he likes Nikoli-style logic puzzles in particular. 


Puzzle Team

Ellie Feng

Ellie Feng is a junior at Conway High School. She discovered competitive math in middle school, and since then, she's qualified for AIME in 2020, 2021, and 2022 and was invited to Math Prize for Girls in 2022. She was introduced to puzzle hunts through the inteGIRLS spring puzzle hun which lead her to joining the puzzle writing team for inteGIRLS. 




Social Media & Outreach • DC Chapter

Anna Li

Anna is a senior at Poolesville High School in the Science, Math, and Computer Science Magnet Program. She’s been involved in competition math since middle school and joined INTEGIRLS after attending the first in-person competition in Maryland. She’s excited to continue hosting math competitions with the DC chapter and spread the word about INTEGIRLS through social media!

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