oSTEM Executive Committee and Board of Directors

Lilian Martinez

Executive Director & CEO

Lilian M. Martinez currently serves as the C.E.O. and Executive Director of Out in Science, Technology, Engineering and Mathematics (oSTEM), Inc. Lilian has a background in Chemical Engineering that took a sharp turn into non-profits. Lilian's expertise is in Event planning, Logistics and Fundraising for 501(c)(3) entities.

Beau Williams


Beau Williams (He/Him/His) was born in Baltimore, Maryland, grew up in rural West Virginia and completed a 4 year tour of duty with the US Army in 1990. He has completed a Bachelor of Arts degree in Cultural Anthropology and Leadership. A Masters degree in Whole Systems Design with a minor in Management at Antioch University, Seattle. Beau advocates for inclusion of marginalized populations, professionally and personally. He seeks out diverse cultures and ways of thinking, no matter how uncomfortable the situation, to continue learning and growing. Beau’s personal vision statement sums up his humble, servant leader style: “Be ashamed to die until you have had a positive impact on humanity and the earth. This guides everything I do.”

William Agnew

Vice President of External STEM Partnerships

Bio coming soon!

Sindhu Sreedhar

Vice President of Membership

Sindhu Sreedhar is an engineer at Toyota R&D in Michigan, working on process engineering for seats and seat parts. She serves as the vice-chair of Toyota's LGBTQ+ employee resource group and coordinates the sponsorship of Ann Arbor Pride. Sindhu holds a BSE in Chemical Engineering from the University of Michigan, where she lead the University of Michigan oSTEM chapter. In her free time, Sindhu is training to become a yoga teacher and hopes to specialize in yoga for QTPOC and decolonizing yoga.

AJ Bryant

Vice President of Inclusivity, Diversity, Equity, and Accessibility

Bio coming soon!

Travis DePrato

Vice President of Innovation & Technology

Bio coming soon!

Janine van Niekerk

Vice President of Marketing and Communications

Bio coming soon!

Matthew Welmers

Conference Chair

Matthew Welmers (he/they) is an analytical chemist for INX International Ink Co as well as the Annual Conference Chair. As an analytical chemist they are responsible for solving customer issues, providing quality control and assurance support for production and developing methods to support Research and Development. While not at work Matthew enjoys volunteering and being active in professional organizations like Alpha Chi Sigma, a chemistry professional fraternity. His involvement with oSTEM began in 2015 when he was selected to be the Conference Programming Committee Chair. Matthew has served as Programming Committee Chair since 2015, stepping up to take over as the Annual Conference Chair for oSTEM 2019. For fun, Matthew enjoys exploring various restaurants, parks and bookstores in the greater Chicagoland area.