developer-apis
(3)
Johan Brissmyr
Johan Brissmyr is the CEO and co-founder of Castle, a security company that helps online businesses detect fraud, bots, and account takeover in real time. A computer scientist from Lund University, he started building web products in Malmo, Sweden before moving to Silicon Valley through Y Combinator and relocating the company to New York. Castle grew out of a password-storage side project that revealed a bigger opportunity in behavioral risk scoring, and today combines device fingerprinting, behavioral signals, and analytics into APIs used by companies of many sizes.
Ben Eisenberg
Ben Eisenberg is the CEO of People Data Labs, the B2B data company that supplies the clean, structured person and company datasets behind AI models, recruiting platforms, and sales tools. He joined as a product hire, climbed through senior roles across the business over seven years, and in September 2024 took over from the founders with a mandate to push the company toward $100M ARR. A UC Berkeley computer science and history double major, he is known for a pure data-company philosophy, a compliance-first stance, and a self-deprecating sense of humor (his LinkedIn handle is, proudly, li-influencer).
Jesse Robbins
Jesse Robbins is General Partner at Heavybit, the San Francisco-based venture firm focused exclusively on developer-first companies. He co-founded Chef (sold to Progress Software for $200M+), invented GameDay chaos engineering at Amazon where he held the title 'Master of Disaster', and co-created the O'Reilly Velocity Conference that seeded the global DevOps movement. A former volunteer firefighter and EMT, he brings a crisis-responder's instincts to early-stage investing, backing companies like Snyk, PagerDuty, Fastly, LaunchDarkly, and Tailscale. His portfolio spans 60+ companies with five IPOs.