Jennifer Rider

Senior Executive Director

Jennifer is passionate about equity, education, and empowerment, and has focused her career on building opportunity and delivering social impact. She is an avid traveler, a voracious reader, an outdoor enthusiast, a lover of pets, and a dedicated single mother.

Grace Ihn

Associate Executive Director


Grace began her YMCA career in San Diego as a Youth Leader at Youth & Family Services YMCA and La Jolla YMCA. She has been passionate about working with youth and teens and excited to start her new position as the Admin Services Director. In her free time, Grace enjoys cooking, going to shows and spending time with friends.

Miranda Boon

Associate Executive Director


Miranda has always had a passion for health and wellness. In her free time she enjoys going to bay area sporting events, going to concerts, and playing out in the sun!

Veronica Grauke

Membership Director


Veronica Grauke began her career with the YMCA of San Francisco in 2001 when she started working at Camp Jones Gulch as a summer camp counselor. In her free time, she enjoys running 10k’s, walks with her dog, and SF Giants games!

Jack Gray

Youth Development Director


I am 5th generation San Franciscan. I love working at the YMCA because of all the lives you get to help change. Go Giants, 9ers, and Dubs!

Sheriann Chaw

Child Development Director


Sheriann’s greatest passion is working with the children, families and teachers in creating individualized programs for children to build a solid foundation for lifelong development. In her free time, she and her husband can be found cheering on their two daughters at their soccer games, karate tournaments, and piano recitals.

Tracey Esteban

Youth Development Director


Tracey Esteban is our Youth Development Director who has worked with Youth Development in Licensed Child Care programs, Preschool and Day Camp through YMCA of Silicon Valley at the El Camino branch for over 9 years. She's very excited to be here at the Peninsula Family YMCA to build new relationships with our staff and community.


Erik Camero

District Aquatics Safety Director and Recruiter


Erik has had a drive toward strengthening communities since he was a young Eagle Scout volunteering his time at community pools. He enjoys spending his time in nature, at music festivals, or with a good fantasy book.

Kate Henninger

Associate Aquatics Director

Kate has been working in Aquatics since she was 16 years old. She grew up in a small town in Washington and now loves living in the Bay Area. Her passion in life is to ensure that everyone, no matter their age, can enjoy the water and be safe while swimming.

Shawn Geronimo

Community Development Director

Shawn began his YMCA career in 2017 working in Member Services at the Presidio YMCA. He finished graduate school in December 2019 at the University of San Francisco and is passionate about community outreach. On his free time, Shawn enjoys playing basketball, deejaying and playing his guitar.

Board Members 

Carrie Hermann

Burlingame High School, College and Career Center



Alex Coimbra

Sr Clinical Imaging Scientist


Charles Wienbar

Consultant-Clinical Trial Manager

Gilead Sciences

Erik Winkler

Realtor/Sales Manager


Edward Chang

VP Business Development

Freedom Financial Network

Vivek Sharma

Head of Advisor Services Strategy

Charles Schwab

Natalie Braegger

Nicole Warmerdam

Estate Planning Attorney

Carr McClellan

Richard Herbert

Institutional Portfolio Manager

Franklin Templeton

Emma Shlaes

Director of Policy & Advocacy

Silicon Valley Bicycle Coalition