Madison McIlwain brings an unusual combination of inherited venture capital pattern recognition from her "VC family" background and self-made operating experience across retail, e-commerce, and product roles before joining Defy, giving her both investment instincts and founder empathy. She has built a distinctive "founder-funder" bridge through co-founding The Room Podcast, a Forbes 30 Under 30-recognized top tech podcast that puts her in repeated deep conversations with iconic founders about their earliest decisions, creating an uncommon sourcing and diligence approach rooted in understanding how founders think rather than just what they've built.
What they've been talking about across their social media accounts

- Deep interest in the rise of AI-assisted development and the concept of vibe coding. Frequently shares personal experiences becoming more technical by using tools like v0 and Claude to build projects, jokingly comparing the choice between different AI coding assistants to an existential crisis.
- Strong focus on the Vercel ecosystem and supporting founders who build on their infrastructure. Actively promotes benefits for startups, such as shipping AI Gateway credits for Y Combinator founders and hosting demo nights with partners like Vanta and LangChain.
- Appreciation for the intersection of legacy retail and modern innovation. Offers detailed analysis on how heritage brands like Gap are managing to stay culturally relevant by blending their history with new in-store technologies and elevated customer experiences.
- Enthusiasm for the evolution of automated technology, specifically the marketing and functional shift from simple bots to autonomous agents. Views this transition as a significant upgrade for the industry and explores practical applications like integrating agents into commerce flows.
- Active participation in the San Francisco tech circuit, frequently organizing and attending events around Techweek, podcasts, and office openings to connect with builders in person.
About their Fund
Sectors
SaaS, Enterprise, AI, Fintech, Consumer
Rounds
Pre-Seed - Series B+
Avg Check Size
$100K - $10M
Notable Investments
Defy operates with a distinctive "Sage" model where current CEOs and serial founders like Brian Lee and Sujal Patel get fund-level carry and deeply embed with portfolio companies as hands-on operators, sometimes even taking interim leadership roles and personally bringing in hundreds of millions in follow-on capital. The firm also "hatches" new companies internally by having partners identify opportunities, do the research and prototyping themselves, then match concepts with founders—functioning partially like a startup studio while running a traditional venture fund.
Notable Fund
Investments
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