Javier
Ezpeleta.

GitHub (JaviEzpeleta)

20 years of coding. Expert in Next.js, TypeScript, SQL, smart contracts, and Web3 integrations.
Passionate about AI: especially agentic coding and creativity tools.
Fast builder. Looking for a team to grow with.

001 · Work

Things I've shipped.

002 · Track record

Where I've shipped.

2024-12 — 2025-05

Fullstack Engineer

Built interactive chess learning platform with two top-100 Grandmasters.

Training modules, quizzes, dashboards, AI-powered featuresTech: Next.js, Prisma, Anthropic LLMs
2024-07 — 2024-09

Sparkle

(every.to)

Fullstack Engineer

Built macOS app that auto-organizes files using AI.

10K+ users, 10M+ files organizedTech: Electron, TypeScript, GPT APIs
2024-04 — 2024-06

Founding Engineer

Built video-first podcasting platform.

Real-time analytics, online video editorAI chapter detection and ad placement
2023-09 — 2024-03

Co-founder & CTO

Built AI assistant for Instagram creators.

3K usersIntegrated 50+ GPT use cases with Instagram APIFull product from zero to launch
2021-09 — 2022-12

Co-founder & CTO

Led Web3 development for client projects.

Deployed smart contracts for 5 NFT collectionsTotal volume: $6M USD
2013-11 — 2021-09

Founding Engineer

Led development of music education platform serving 40K daily active users.

Cross-platform: web, Windows, Mac, and iOSBuilt custom ML libraries for polyphonic audio detectionAutomated grading, dashboards, marketplace integrationsNearly 8 years building and scaling a single product
Earlier career

Cloud Hymnal

(Yale University)

Lead Developer

Lead developer for Yale-associated project.

Earlier career

Fullstack Developer

Built email delivery system handling 4M+ emails/hour.

Universidad de Salamanca

Universidad de Salamanca

B.S. Computer Science and Information Systems · 2012

003 · Voice

In my own words.

In one day I can do what it used to take me one month. Cloud Code is the first tool that made me feel limitless.
On Claude Code
Helping someone else is the best high I know: adrenaline, confidence, purpose, and real connection, all at once.
On helping others
constraints create creativity
On constraints
Asking for help is not giving up. Asking for help is refusing to give up.
On asking
AI stands for Amplified Imagination.
On AI
If you're reading this, then I'm part of your context window.
On reading this
004 · Now

Looking for a team.

A place where I can contribute, learn, and help others do the same.

I'm open to full-time, contract, or founding-engineer roles. Especially excited about teams building AI-native products, developer tools, or consumer social. Remote-first from Madrid, open to relocating.

Madrid, Spain · 2026