Sherwood Callaway is a founder and engineering leader with 11 years of experience building infrastructure, observability, and AI-enabled products from startup to scale. He founded and leads Sazabi, an AI-native observability platform, and previously co-founded Opkit (YC S21), which commercialized one of the earliest AI phone-calling services before being acquired. At Brex he established core observability and bill-pay teams and shipped Brex’s first subscription SaaS product, and at 11x he led a 12-person team to build a $10M+ ARR product and migrate 300+ customers. Comfortable across the full stack and cloud-native operations, Sherwood blends hands-on engineering with product-led go-to-market experience and investor-facing diligence as an Infra Scout at a16z. He relocated and reinvented his career path multiple times—moving from North Carolina to San Francisco and later NYC—showing a pattern of hustle and rapid impact.
11 years of coding experience
4 years of employment as a software developer
Business Fundamentals Certificate Business Marketing Accounting Finance, Business Fundamentals Certificate Business Marketing Accounting Finance at McIntire Business Institute at the University of Virginia
Computer Networking, Computer Networking at Bradfield School of Computer Science
S21, S21 at Y Combinator
Bachelor of Arts (B.A.) History, Bachelor of Arts (B.A.) History at Davidson College
Contributions:42 commits, 35 pushes, 1 branch in 1 year 7 months
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Sherwood Callaway - Founder & CEO at Andreessen Horowitz