Senior Full-Stack & Product Engineer. I build web, mobile and AI products end to end, from the first ticket to production.
I've been shipping software since 2019, remotely, for teams in the US and Latin America. These days most of my work is TypeScript: Next.js on the front, Node and Postgres behind it, and LLMs wherever they actually help. Before that I spent years on Flutter, and I still ship mobile apps.
Most of what I've built lives in private client repos, so this page shows the side projects. The client work is on my portfolio.
Tokendial · Swift, C#
Native dials for the usage limits of your AI coding assistants (Claude Code, Codex, Copilot, Cursor and more), on the edge of your screen. It reads the sessions your tools already store and only talks to each tool's own usage endpoint. macOS, Windows and Linux. Website
hollow · Dart
Skeleton loading screens for Flutter that match your real UI. Instead of drawing placeholders by hand, hollow snapshots the render tree and generates the shimmer from it. 160/160 pub points.
- AI voice receptionist for local businesses: Retell voice agent, a Fastify scheduling engine with Google and Microsoft Calendar adapters, Twilio SMS, Stripe prepaid billing, multi-tenant.
- AI job board: CV parsing with an LLM, embeddings and pgvector retrieval, LLM reranking. Next.js, Supabase and Cloudflare Workers, with a credits paywall enforced by Postgres RLS and Stripe.
- Manitas: a two-sided marketplace for local repair jobs. Flutter app for iOS and Android, ASP.NET Core API on PostgreSQL, React admin back office, six languages.
- Mobile apps on the App Store and Play Store, among them SnapnFund (OCR donations, thousands of users) and Follow App.
- Tech lead of 6 developers on a Flutter, Firebase and Neo4j product.
Daily: TypeScript · React · Next.js · Node.js · NestJS · Supabase / PostgreSQL · LLM pipelines and AI agents · Stripe
Also: Flutter / Dart · ASP.NET Core / C# · Swift · Firebase · Cloudflare Workers · Docker · GitHub Actions
Remote from Nicaragua (UTC-6). Open to senior IC roles on product teams.
Portfolio · LinkedIn · raybel.developer@gmail.com