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COHORT

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Rollup

j-yim profile picture
nora-xiao profile picture
Founded2026
3Employees

Located in San Francisco, California

tryrollup.com
InfraAI AgentsAI Infra

Years of user context for personal AI, in minutes.

Rollup gives any app years of user context, in minutes. We help personal AI assistants and consumer apps understand users’ interests, preferences, and experiences from day one. Our SDK uses on-device AI to turn camera rolls into structured context for personalization, without photos leaving the phone. Long-term, Rollup becomes a universal context layer for every app. We signed 8 customers representing $288K in cARR in 14 days and are doubling our revenue WoW. We have 10M+ MAUs in our qualified pipeline, including the 1) largest traditional retailer by revenue in the world and 2) the second-largest supermarket operator in North America. Founded by J, a Stanford CS grad & repeat technical founder who previously raised over $5M, and Nora, a Caltech CS dropout who built AI infrastructure Databricks, Notion, and Amazon and performed AI research at 16 at Harvard, Princeton, and EPFL.

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Meet the Team

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Co-Founder / CEO at Rollup

J Yim

Stanford B.S. CS (AI/ML) + Acting & M.S. MS&E. Previously founded a venture-backed software company that raised $5M+. Grew up between Seoul, New York, and Los Angeles in a family spanning generations of fashion, photography, media, and visual culture.

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Co-Founder / CTO at Rollup

Nora Xiao

Caltech CS. AI engineering at Databricks, Notion, Amazon. AI research (16 y/o) at Harvard, Princeton, EPFL.