Dr. Bonnie Bertolaet, Executive Director

Prior to her role as Executive Director, Dr. Bertolaet served on the Board of Science Club for Girls from 2017 and served as its Chair in 2018. In that role, she was the major force behind the current strategic plan, the operational restructuring of SCFG, and a reinvigorated focus on development. 


Bonnie has worked in biotech and with educational organizations in public and private schools in a variety of roles, including working in STEM education and supporting an equity-based educational program focused on raising awareness of physical and intellectual disabilities for children in K-6th grade. 


Dr. Bertolaet received her B.A. from Amherst College and her Ph.D. from Harvard University and trained as an NIH post-doctoral fellow at the University of California San Diego and The Scripps Research Institute.

Evelyn Gonzalez, Program Recruitment Manager

Before joining Science Club for Girls, Evelyn worked as the Special Projects & Volunteer Coordinator for the Office of Community at Engagement at Bunker Hill Community College. Originally from Mendota, California, Evelyn graduated from California State University, Fresno with a B.A. in Sociology and Minors in Spanish and Urban Civic Education and will complete her Masters in Education Policy from Boston University this fall. Evelyn has won several awards for her dedication to making a difference in the community—including the Newman's Own Foundation Fellowship, Newman Civic Fellow award through Campus Compact, and the John D. Welty award for completing more than 1,000 hours of service at CSU, Fresno. She is excited to now be dedicated to making a difference in the lives of young girls of Science Club for Girls, who need to see the change in STEM. As a first-generation Latina, Evelyn understands what it means to be mentored by someone with a similar background.

Tanya Miller, Program Intern, UConn BOLD Fellow

Tanya will be interning with Science Club for Girls for the 2020-2021 academic year as a Helen Gurley Brown BOLD Fellow. This fellowship is a postgraduate leadership opportunity provided through the University of Connecticut’s BOLD Scholars Program. In May 2020, Tanya graduated as a Physiology and Neurobiology Honors Scholar from UConn, where she served as chairperson for the John and Valerie Rowe Health Professions Scholars Program. During the summer of 2019, she created a documentary titled “#ILookLikeADoctor” in order to increase the visibility of female physicians and to encourage young women interested in medicine to become physicians. She is excited to continue her passion for mentorship and fostering community among students traditionally underrepresented in STEM.

Ellen Sturgis, Finance Director

Ellen has over 30 years of nonprofit experience in finance and operations for small to medium sized organizations in a variety of sectors. She is a principal of Night Heron Consulting which offers interim CEO & CFO services as well as expertise in redesigning financial and operational systems. Ellen, a lifelong resident of Massachusetts, has an MBA in Finance from Boston College, and serves as a Trustee of Hampshire College (B.A. History/Political Science), a Corporator for Middlesex Savings Bank, and is on the Leadership Council for MassCreative.

Lucy Sweeney, Director of Development

Lucy joined Science Club for Girls as the Director of Development in January 2020. With over a decade of experience in Boston's non-profit sector, Lucy brings expertise in individual fundraising and events. Previously, Lucy worked at The Food Project in a variety of roles, including Associate and Interim Director of Development, and at Brigham and Women's Hospital as the Project & Events Manager for the Department of Medicine. She received a B.A. in Spanish and Studio Art from the College of the Holy Cross in Worcester, MA. Lucy is passionate about youth development and equity, and is a lifelong student of science. 

Cristina Ullmann, Program Director

Cristina has worked for both environmental non profits and science education organizations and is passionate about getting young girls interested in STEM.  As the Program Director, Cristina is responsible for coordinating the clubs and managing the 35+ volunteers who teach our curriculum to the girls. Cristina has an M.S. in Conservation Biology and Sustainable Development.

Hannah Weinstock, Program Manager

Hannah will be managing our program expansion to Boston and Somerville.

She has worked as a middle school STEM educator in Chelsea, MA where she created and taught classes in Computer Science, Technology and Engineering, 8th grade Physical Science, 5th grade General Science, and 6th grade Earth Science. Hannah received her B.A. in Psychology from Columbia University where she worked in a Social Psychology laboratory focused on identifying and mitigating stereotype threats among students of color.

Leadership and Staff

Board of Directors


Tracy has held executive positions with Johnson and Johnson, Covidien, GE, Philips, Hologic, and Medtronic. She is presently on the board of Maxim Integrated (MXIM), volunteers at the Pine Street Inn for people experiencing homelessness in Boston and has served on the board of Newton Wellesley Hospital (Partners Healthcare). Tracy earned her dual BS in Mechanical Engineering and Engineering and Public Policy from Carnegie-Mellon University and a MS in Mechanical Engineering from Rensselaer Polytechnic Institute.


Governance Chair

Alejandra V. is the Chief Legal Officer and General Counsel to Momenta Pharmaceuticals, Inc., a public company focused on immune mediated rare disease drug development. Before Momenta, she was Vice President and General Counsel of Cerulean Pharma Inc. Prior to that, Ms. Carvajal worked at Millennium: The Takeda Oncology Company. Ms. Carvajal received a B.A. cum laude from Harvard University and a J.D. cum laude from The Georgetown University Law Center.



Abe is proud to join SCFG as Treasurer and Finance Committee Chair and brings expertise in investments, finance, project management, and operations. A first-generation college graduate, Abe is passionate about increasing access to STEM education and opportunities for underrepresented communities. At John Hancock Financial, Abe co-founded an Impact Investment startup COIN which helped investors align with their values in areas such as Gender Equality and Diversity. Abe received a BA in Economics from Harvard College and a Master’s Degree in Management from Harvard Extension. 

Gretchen is passionate about energizing students to explore the awesome potential of the STEM/STEAM disciplines to transform their lives. She was senior leader at Engineering is Elementary at the Museum of Science and a K-12 educator. Gretchen was Associate Dean, College of Engineering, Boston University and founded three STEM educational programs, annually training and deploying 60 engineers to 3,400 secondary students nationwide. Prior experience includes roles at Duracell, Motorola and Pratt & Whitney Aircraft. She received a Ph.D. in Materials Engineering from Northwestern University.

Kate first became involved in Science Club for Girls in 2017 when she ran the Boston Marathon and raised over $1,000 for the organization. She then began mentoring at the King Open school in Cambridge and joined the Development Committee. Kate's career is in the environmental sector, where she works as a Project Geologist at Roux Associates to consult in environmental risk management. Ms. Hardock received a B.A. cum laude in Geology and Geography from Colgate University.

Karen has taken on the role of our new President and Board Chair. Karen is Senior Director of Clinical Biomarker Sciences at Pfizer where she has worked for over 25 years.  Her parallel volunteer career demonstrates a passion for programs that promote the positive development of women and girls. Karen has served as President and Chairman of the Board for both the Massachusetts Chapter of the Association for Women in Science (2012-13) and the Junior League of Boston (2017-18). She is the recipient of JL Boston’s 2005 Active Volunteer Award, the 2006 Outstanding Manager Award, and the 2015 Sarah Lawrence Award for community service beyond the Junior League. Karen earned her PhD in Pharmacology at Boston University School of Medicine.



Sharon is a Patent Attorney at Translate Bio, Inc., a clinical-stage mRNA therapeutics company in Lexington, Massachusetts. Prior to joining Translate Bio, Dr. Walker worked at Partners HealthCare Innovation, in private legal practice, and as a research scientist in the US and in Switzerland. Dr. Walker received a B.A. in Chemistry from Bowdoin College, a Ph.D. in Pharmaceutical Chemistry from The University of California, San Francisco, and a J.D. from Suffolk University Law School. Dr. Walker was born and raised in the South End of Boston. She is committed to championing for girls and women from underrepresented communities for inclusion in the STEM professions.


Karen Whitney is President of The Sonder Group and builds teams for life science companies developing breakthrough technologies such as Next Generation Sequencing and Synthetic Biology. Previously, she was VP, Business Development at the NewcoGen Group a Flagship Pioneering Fund and was part of the founding business development team at Celera Genomics, the first company to sequence the human genome. For over a decade, she held commercial leadership roles at PE Applied Biosystems (Now Thermo) and Pharmacia (Danaher). She earned a BA in Biology from Colby College.

Current Openings


We're hiring! Thanks to the generous support of the Women's Foundation of Boston, Science Club for Girls seeks two dynamic individuals to join our team as Program Management Intern and Communications + Outreach Intern. Both positions are paid, 20 hours/ week for a 1 year internship (Jan - Dec 2021.) Click below to learn more and apply today!


Volunteers at SCFG play a critical role in helping to deliver hands-on, experiential STEM programming to girls and young women in our communities. Join us for a unique and meaningful experience. Opportunities vary from helping to set up clubs, photographing events, and donning a lab coat to assist the girls with activities.

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136 Magazine St #2

Cambridge, MA 02139

617.391.0361 | scfg@scienceclubforgirls.org | tax ID 14-1892866

© 2019 by Science Club for Girls