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Christian Jay Villanueva

@christianjayvillanue

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Full stack software engineer building AI-integrated apps and scalable APIs with TypeScript, React, and Node.

United States

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What I'm looking for

I’m looking for teams that ship fast and value engineering craft—where I can build responsive AI-integrated full stack apps and scalable backend APIs, improve developer workflows, and contribute to maintainable systems and open source.

I’m a Full Stack Software Engineer building responsive AI-integrated applications and scalable backend APIs across TypeScript, React, and Node, with strong experience shipping production-ready features end to end. At Pypes LLC, I’m currently shipping open source developer tooling across the github.com/pypesdev org, integrating LLMs (GPT-4 class models) into developer workflows and maintaining a releasable OSS surface through testing and CI/CD.

Previously, at 100 Devs, I architected and implemented an AI-powered VS Code extension to evaluate technical debt and improve developer efficiency, cutting latency 30% across full-stack apps through routing and async workflow refactors. I also review 5+ PRs per week and bring a team-first mindset honed as a CAL FIRE handcrew firefighter—disciplined under load, focused on safety, and committed to engineering craft.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer (OSS)

Current

Pypes LLC

Jan 2025 - Present (1 year 6 months)

Built and shipped open-source developer tooling at Pypes LLC, delivering end-to-end features across React/Next.js frontends, backend APIs, and PostgreSQL/Supabase data layers. Integrated LLM capabilities into developer workflows and maintained CI/CD and testing practices for release quality.

TypeScript React Next.js PostgreSQL Supabase GPT 4 Developer Tooling GitHub Actions CI CD Jest Open Source Code Review

Current

Software Engineer / Open Source Contributor

Current

Pypes LLC

Jan 2025 - Present (1 year 6 months)

Ship open source developer tooling across the pypesdev organization, building end-to-end full-stack features. Integrate LLMs into developer workflows and steward CI/CD and testing patterns for reliable releases.

TypeScript React Next.js PostgreSQL Supabase Developer Tooling GitHub Actions Jest CI CD Open Source

Software Engineer

100 Devs

Jan 2023 - Dec 2024 (1 year 11 months)

Architected and implemented an AI-powered VS Code extension using TypeScript, Node.js, and LLM integrations to evaluate technical debt and improve developer efficiency. Reduced page load times and API response latency by 30% through routing, asynchronous workflow, and backend error-handling improvements, while leading code reviews and contributing to multiple full-stack applications.

TypeScript Node.Js Development LLM Integrations Asynchronous Error Handling React Full Stack Code Review Jest CI CD VS Code Extension API

Firefighter

Cal Fire

Jun 2023 - Oct 2024 (1 year 4 months)

Operated on 15+ member handcrew teams to contain and extinguish wildfires across diverse terrains. Followed safety protocols, coordinated with team leadership, and maintained equipment readiness during high-risk emergency response operations.

Hand Crew Teamwork Emergency Response Team Coordination High Risk Operations Teamwork