Founder Profile
Kirk Kosinski
Last reviewed: September 2026 · By Swet Parvadiya
Background
Kirk Kosinski held a profoundly rigorous, highly technical background in advanced computer science, complex database optimization, and mass-scale web application infrastructure. Operating as a fiercely capable backend developer who possessed deep expertise in translating massive, unstructured corporate datasets into highly actionable sales intelligence, this incredibly intense technical foundation provided the exact engineering leverage required to successfully co-found the massive ZoomInfo enterprise.
Founding Story
Kirk Kosinski is an absolutely brilliant software engineer, fiercely skilled systems architect, and the profoundly influential technical co-founder fundamentally responsible for programming the incredibly complex infrastructural bedrock of the massive DiscoverOrg (now ZoomInfo) intelligence platform. Operating as a highly talented technologist alongside Henry Schuck in 2007, Kosinski aggressively spearheaded the highly complex backend engineering required to seamlessly process massive volumes of highly fragmented corporate data. By relentlessly building highly scalable, incredibly secure CRM integration pipelines that instantly injected hyper-accurate contact information directly into Salesforce, his absolutely rigorous technical execution completely guaranteed the platform's flawless operational dominance over legacy data brokers. His massive engineering legacy permanently secured his status as a core titan of B2B data architecture.