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Hi, I'm Charlie Rios — Senior Full-Stack Software Engineer based in Amsterdam.
I build products end-to-end: from UI architecture and design systems to APIs, infra, and production deployments. I've led frontend teams as Frontend Lead, owned features as a Product Engineer, and shipped across web, mobile, and cloud. Nowadays I'm growing into a native AI developer, building intelligent systems that reach real users.
What I bring: strong product sense · scalable React/TypeScript frontends · full-stack ownership · AI-native tooling
Native macOS menu bar app that unifies AI usage across Cursor, OpenAI, Anthropic, and more — track tokens, credits, spend, and burn rate without juggling provider dashboards. Includes Notification Center widgets, usage alerts, and privacy-first credential storage in the Keychain.
Schema-driven email signature builder with a guided template flow, live HTML preview, and one-click copy into Gmail. Import your profile from LinkedIn to pre-fill fields, then customize in the visual template editor — saved signature library, per-field styling, and multi-language support included.
Peer-to-peer car rental marketplace inspired by Airbnb — rent cars from local owners instead of traditional rental counters. Built two proof-of-concept frontends with Lovable and Vercel v0 to compare AI-assisted UI generation workflows.
| Package | NPM | Description |
|---|---|---|
| lizard-ui |  |
A multi-theme UI dependency for building React apps |
| responsive-panel |  |
Dev tool to visualize and test responsive breakpoints in real time |
| react-api-forge |  |
Type-safe React hook factory for API calls with loading, errors & cancellation |
| react-temporal |  |
React hooks for date & time using the JavaScript Temporal API |
| npm-package-template |  |
Production-ready TypeScript npm package template with CI & automated publishing |
