Meet the Team


Co-President – Jiayang Li ’19
Jiayang Li is a junior studying Computer Science. She has been a part of EWB’s Peru team since the fall of her freshman year. Jiayang has traveled to Pusunchás, Peru after her freshman year and again after her second year, this time leading the project as one of the Project Managers. She is very excited to serve as Co-President of Princeton’s EWB Chapter, as the organization has been a significant part of her Princeton experience. Outside of EWB, she enjoys running, practicing yoga, and traveling!
Co-President – Nicholas Johnson ’20

Nicholas Johnson is a member of the Class of 2020 in the Operations Research and Financial Engineering Department. He was a Co-Leader of the technical components sub team of the Peru Team during the 2016-2017 academic year, traveled in country during the summer 2017 to begin the implementation of a gravity fed water system, and served as Co-Project Manager for the Peru Team during the Fall 2017 semester. As Co-President, Nicholas hopes to continue to develop the  strong reputation of Princeton’s chapter of Engineers Without Borders. Outside of EWB, Nicholas is a Writing Fellow at Princeton’s Writing Center and enjoys playing basketball and chess.

VP of Development – Dale Lee ’20

Dale is a sophomore from Mountain View, California. She is pursuing a degree in economics or computer science, but at heart she is a budding engineer and loves learning about sustainable development. She is a community relations subteam leader for the Dominican Republic team, and outside of EWB she is president of Princeton Women in Business, works on PUTT PUTT—a sustainable tiny house bus conversion—and plays in a harp ensemble on campus.

Co-Director of Outreach – Matthew Yun ’21

Matthew Yun is a first-year student from Limuru, Kenya, who is planning to concentrate in Operations Research and Financial Engineering. He joined EWB in December last year after finding out about its projects in Kenya and has enjoyed his time on the team ever since. Outside of EWB, Matthew enjoys biking and playing rugby and is a mechanic at Princeton’s Cyclab.

Co-Director of Outreach – Heidi Kim ’21

Heidi Kim is a freshman in the Electrical Engineering Department pursuing a certificate in Spanish. As the Social Events Chair for the Peru Team since the fall, she organizes fundraising events among the student body for the team trip. In the same vein, she works with her fellow Co-Director of Outreach, Matthew, to coordinate the general team’s larger scale outreach efforts, like its educational partnership with a local elementary school and its participation in the Communiversity ArtsFest. Outside of EWB, she also plays for Club Lacrosse and works on the Fundraising Committee of Fashion Speaks. 

Secretary – Tiffany Lim ’21

Tiffany Lim is a freshman from New York City who is planning to study Civil and Environmental Engineering with a certificate in Architecture and Engineering and Sustainable Energy. She is interested in sustainable development and its intersection with architecture. She is involved with the EWB Peru team, Princeton Vertical Farming Project, Religious Life Council, and enjoys yoga and meditation.

OIT Director – Aydan Celik ’21

Aydan is a freshman from North Jersey who is planning to study Civil Engineering on the Architecture path with a certificate in Entrepreneurship and VIS. She is interested in being part of the EWB team and advocating for their interest in sustainable development.

Kenya Project Co-Manager – Clare Cook ’20

Clare is a sophomore from Eagle River, Alaska in the Electrical Engineering department.  She joined Princeton EWB’s Kenya team her freshman year, and has since acted as community sub-team leader and now as co-project manager.  She hopes to continue fostering strong relationships between Princeton EWB and the partner communities in Kenya, to promote community ownership and initiative over the project.  Outside of Engineers Without Borders, Clare enjoys running, playing the keyboard with Princeton Faith & Action worship team, and doing anything outside.

  Kenya Project Co-Manager – Vivian Yu ’19

Vivian Yu is a junior from Longmeadow, Massachusetts studying Electrical Engineering. She joined EWB’s Kenya project as a freshman, went on to be the technical subteam leader, and is really excited to lead the team this year as one of the Project Managers. When she’s not working on EWB, you can normally find her working in the lab, reading, or singing. She’s very passionate about sustainable development and is excited to bring that to her work at EWB.

 Peru Project Co-Manager – Sneha Iyer ’20

Major: Undeclared
I’m a prospective Mechanical and Aerospace Engineering major. EWB is a great way for me to apply my engineering knowledge to the real world while also making a positive difference in communities. I look forward to collaborating with my team members and learning more about the project!

Peru Project Co-Manager – Sofia
  Dominican Republic Co-Manager – Nicholas Callegari ’20

Hailing from Deltona, FL, Nick Callegari is a sophomore majoring in Mechanical and Aerospace Engineering and pursuing certificates in Sustainable Energy and Entrepreneurship. He joined EWB as a freshman and became the Community Relations subteam leader of the Dominican Republic Team during his freshman year. Now, he is excited to lead the team as Project Manager. Outside of EWB, Nick is part of Princeton Competitive Engineering’s Hyperloop team, serves as a Questbridge mentor, and is founder and president of PSURF (Princeton Students United Restorations Foundation). He also really enjoys surfing and practicing Wing Chun Kung Fu in his spare time.

Dominican Republic Co-Manager – Alexander Bechtold ’20

Alexander Bechtold is a sophomore from Germany pursuing a degree in chemical and biological engineering. Having grown up in Ghana and Eritrea has inspired him to join EWB in order to help communities around the world get the basic necessities they deserve. Alex traveled to the Dominican Republic in 2017 to help improve the water distribution system in the small community of El Cajuil. He currently serves as the project manager of the team. Outside of EWB he enjoys playing sports and is a member of Princeton’s Club Soccer and Club Rugby teams.