Haystack

Opendoor is a digital real estate platform that pioneered the iBuying model, enabling homeowners to sell their homes online with instant cash offers. The company uses data science and pricing algorithms to buy, renovate, and resell residential homes.

Workplace management platform that helps companies welcome visitors, manage employee attendance, book desks and conference rooms, and handle deliveries. Originally an iPad-based visitor sign-in system, the company evolved into a full workplace platform serving over 16,000 locations globally.

Nominal builds the unified, real-time test stack for physical systems. The platform helps engineering teams developing complex hardware (aircraft, satellites, autonomous vehicles, fusion energy systems, weapons programs) to test, validate, and monitor their systems continuously.

Identity verification and compliance platform (formerly BlockScore). Used phone numbers to verify real-world identity including name, DOB, address, and SSN. Originally built for crypto compliance, later pivoted to a phone-first verification approach that achieved 2,000% more traction. Acquired by Plaid in January 2022 for a reported $250M.