Gonzalo Peña-Castellanos
AI Engineer · Building next-gen developer tools on Jupyter & Open Source
Recent Posts
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How I Use Claude Code: Meta Repos, Plan Persistence, and Iteration Logs
Practical patterns for AI-assisted development: meta repos for multi-project context, persisting plans in claude-plans/, and iteration logs for debugging hard bugs.
Jupyter Mimetypes for Datalayer SDK
Announcing the jupyter-mimetypes package for simplified data exchange between Jupyter kernels using Apache Arrow serialization.
Open Source and Open Science in Latin America
Exploring language localization challenges, infrastructure barriers, and community-building initiatives for open source and open science across Latin America.
Featured Projects
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GymPlus
CEO / CTO
Gym management system with class scheduling, member management, mailing campaigns, payment processing, Social AI chat (Instagram, WhatsApp, Facebook), and Google Business automatic review replies.
Datalayer for Visual Studio Code
AI Developer
Built the Datalayer VSCode Extension providing local and remote Jupyter Notebooks and rich executable Lexical editors. AI Copilot integration and MCP tools.
Datalayer
AI Developer
AI Developer building collaborative Jupyter tools with Lexical editor integration and CopilotKit-powered AI assistance for data science workflows.
