TechnicalCofounder

Sandfox | Technical Cofounder Location: San Francisco Bay Area Format: In-office 4 days a week with flexibility for the occasional remote days The Mission Sandfox is building an adaptive buyer-led discovery platform for enterprise B2B. Our vision is a world where every business interaction adapts to buyer context, where companies understand what buyers are trying to accomplish and deliver the information, guidance, and experiences they need. Today, most B2B buying experiences are static. Websites, content hubs, and campaigns deliver the same experience regardless of who the buyer is or what they need. Sandfox transforms fragmented buyer data into structured intelligence that powers adaptive experiences, helping companies deliver relevance instead of noise. Sandfox is a portfolio company of super{set}, a venture studio that conceives, funds, and builds AI-native companies from formation through scale. We work alongside founders as operators, helping shape companies from day one. We're a small, early-stage team building something that doesn't exist yet in the market. The work is hands-on, the problems are difficult, and the opportunity to shape both product and company from the ground up is significant. Role We're looking for our first engineering hire: a Founding Engineer who will shape both the product and the technical foundation of Sandfox. You'll work directly with the founder to turn product vision into production software, establish engineering standards, and define how adaptive buyer experiences should work in practice. This role goes beyond engineering execution. We're building a new category of software where user experience, information architecture, AI orchestration, and interface design are deeply intertwined. You'll help shape not only how the platform works, but how it feels. We're looking for someone energized by ownership, ambiguity, and the opportunity to build elegant solutions to complex problems from the ground up. WHY THIS ROLE MATTERS The techni