JR

Jeff Rosenberg

Software Engineer

Jeff Rosenberg is an experienced Software Engineer specializing in full-stack web applications and large language model (LLM) systems. Currently at Retool since July 2025, Jeff has contributed to the development of LLM-driven systems and various monitoring interfaces. Prior experience includes roles at Libretto, Rocket Insights, and Circle, where Jeff led projects involving smart contracts, crypto payment integration, and UI/UX enhancements for clients ranging from startups to Fortune 500 companies. Jeff's technical expertise spans multiple languages and frameworks, including Next, React, Node, and GraphQL. A graduate of UCLA with a B.A. in Business Economics and a specialization in Computing, Jeff also has a strong background in project management and team collaboration.

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