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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.
Open-source local AI assistant ecosystem from @pocket-agent — Python Pocket Node runs LLM routing, tools, memory, and Telegram on your machine; a macOS desktop app bundles the stack; a Cloudflare Worker API and React web UI handle chat, monitor, and settings. Shared SDK contracts wire every repo together.
Drop a file. Everyone gets it live. Ephemeral, live-session file sharing on Cloudflare Workers — spin up a room, share a link or QR code, and let connected peers download in real time. WebSocket signaling on the edge; file bytes flow peer-to-peer in the browser. No accounts, no persistent storage.
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.
I own and maintain @open-templates — reusable GitHub starter templates with sensible defaults, init wizards, and paired fullstack packs. A few entry points:
| Template | Summary |
|---|---|
| github-repo-template | Stack-agnostic repo shell — community docs, Dependabot, CODEOWNERS, issue & PR templates |
| npm-package-template | Production-ready TypeScript npm package — tsup, Vitest, ESLint, publish workflows & CodeQL |
| .github-template | Public org meta-repo (.github) — visitor-facing org profile, repository catalog starter, init wizard |
| 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 |
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