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Valentino Araya

@valentinoaraya

Full Stack Developer building production SaaS and custom systems with TypeScript, React, and Node.js.

At Liga Gestión - Municipal Basketball League, I designed and implemented a full-stack system for managing basketball competitions, from registrations and fixtures to scoresheets and public statistics. I also developed backend rules for game events and an offline-first scoresheet PWA.

For Tu Repe, a sports streaming SaaS, I developed the frontend and backend, implemented recording and storage for sports-camera streams, and integrated Backblaze B2. I also handled deployment on a self-managed VPS; sports clubs currently use the system.

I'm building Cursada, an AI study copilot that answers questions from a user's notes and cites source files and pages. It uses RAG with hybrid search, and I added guardrails to validate citations and abstain when evidence isn't found.

Experience

Work history, roles, and key accomplishments

Full Stack Developer

Tu Repe - Sports Streaming SaaS

Developed the full frontend and backend, implemented the recording and storage system for streams, integrated Backblaze B2 API, built a REST API, implemented automated testing with Jest, and handled full deployment on a self-managed VPS.

React Express TypeScript MySQL Backblaze B2 REST APIs Jest VPS Deployment

AI Study Copilot

Cursada

Building a RAG study copilot that answers from the user's own notes and cites the source file and page. Implemented PDF ingestion, hybrid search, guardrails, and applied spec-driven development, TDD, and BDD.

TypeScript Fastify Next.js React PostgreSQL Pgvector Drizzle Zod Vercel AI SDK Ollama RAG Vitest Cucumber.Js Test Containers GitHub Actions

Full Stack Developer

Liga Gestión - Municipal Basketball League

Designed and implemented a full stack monorepo with an Express API and shared Zod contracts. Built the competition module, an offline-first scoresheet PWA, backend sports rules, a public portal, and an admin back office.