ben.barrera

Things I've built,
broken, and
shipped.

Side projects, open-source contributions, and experiments in systems, data, and software that helps people learn.

  • 2026 / Interactive learningin progress

    Lattis

    An interactive system design curriculum with 3D walkthroughs. Follow the decisions behind caches, queues, and sharding as each architecture grows.

    system design3Deducation
  • 2026 / Open source

    Making Daft faster

    Contributions to a distributed dataframe engine in Rust: inline min/max accumulators, string fast paths, and simpler aggregation dispatch.

    rustopen sourceperformance
  • 2026shipped

    me_me_me

    This site. A monochrome portfolio + blog built with Next.js, Tailwind, and MDX.

    next.jstailwindmdx
  • 2025shipped

    Gradual AI Agents

    Built AI agents that query 100GB+ of company event data across GitHub, MongoDB, and ClickHouse, then turn the results into charts with the AI SDK.

    next.jsmcpkubernetesai sdk
  • 2024shipped

    Space4All

    A planetology learning platform for K–12 students, with Gemini-generated study cards, quizzes, and a leaderboard. Placed fifth in its competition.

    angularspring bootpostgresqlgemini
  • 2024shipped

    MedSave

    A medical coding prototype using React, Express, MySQL, and Gemini. Tested automated translation on 100+ custom patient records, reaching 67% accuracy.

    reactexpressmysqlgemini