Cassidy Williams, Angel Investor

Cassidy Williams is a software engineer, developer advocate, startup advisor, and investor known for her impact in the global tech community. She publishes a widely read weekly newsletter and has been recognized by Glamour as one of the “35 Women Under 35 Who Are Changing the Tech Industry,” as well as featured in the documentary Big Dream. Cassidy is also a sought-after public speaker, presenting at events ranging from Grace Hopper Celebration and SXSW to TEDx and the United Nations. Alongside her technical work, Cassidy has built a strong voice in developer education and advocacy through writing, speaking, and mentorship. Her career has centered on making technology more accessible, inclusive, and engaging, with a consistent focus on empowering the next generation of STEM leaders. Cassidy is also an angel investor in early-stage technology startups. Her investments include Jam (developer productivity, bug reporting), Daytona (developer infrastructure, cloud workspaces), Rowy (backend tools, no-code databases), Theatre.js (developer tools, animation for the web), Cal.com (open-source scheduling), and Roboflow (computer vision, machine learning tooling).