hector
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Open to Frontend / Full-Stack roles· Remote · US time zones (CST) · El Salvador

Hector Torrez

Full-Stack Software Engineer · React, TypeScript, Node.js

I ship product features end to end: React and TypeScript on the frontend, and Node.js APIs on the backend. Three years across ERP, logistics, e-commerce, and SaaS.

I lead frontend architecture for ERP and logistics platforms at JDK Tech, with Next.js and TanStack. On my own projects I own the whole stack: NestJS, PostgreSQL, Cloudflare, and AWS.

Selected work

A multi-tenant RAG platform that answers questions from your team's documents, with citations.

Featured project

KnowledgeHub AI

Multi-tenant RAG SaaS where teams upload their documents and get grounded, cited answers. A NestJS API owns auth, organizations, ingestion, and retrieval; a TanStack Start app streams answers back over SSE.

  • Hybrid retrieval: pgvector embeddings plus PostgreSQL full-text search, with query rewriting before generation.
  • Every answer cites its source chunks, with an evaluation suite that checks citation validity.
  • Organizations, roles, and invitations, plus per-tenant rate limits and usage quotas to keep LLM spend bounded.
  • Presigned uploads to Cloudflare R2 and a background processing pipeline for extraction, chunking, and embedding.

NestJS · TanStack Start · PostgreSQL · pgvector · Prisma · OpenAI · Redis · Cloudflare R2 · Railway

See all projects

Experience

Full-stack developer

JDK Tech · Grand Prairie, Texas (remote, El Salvador)

— Present

  • Fixed a performance bottleneck in invoicing by virtualizing lists, so invoices with hundreds of line items render smoothly for 100+ daily users.
  • Led frontend architecture for a logistics platform from day one: component structure, coding standards, and PR review ownership.
  • Built a CI/CD pipeline in Azure Pipelines that deploys to Vercel via the Vercel CLI, standardizing deployments across all our projects.

Frontend developer

BetaCode · El Salvador

—

  • Shipped frontend features for e-commerce and event platforms in React, and contributed to the REST APIs and Node.js services behind them.
  • Built sites and app features from scratch with Next.js, React, TypeScript, and TanStack Query.
  • Built dashboard and admin workflows that reduced repetitive operational work.

Full-stack developer

Freelance · El Salvador

—

  • Built a financial management UI with custom Excel-like formulas and real-time calculations.
  • Integrated backend services, databases, and APIs for internal business workflows.
  • Built drag-and-drop workflows and the API endpoints behind them.

Skills

TypeScript · JavaScript · React · Next.js · TanStack Start · TanStack Query · Node.js · NestJS · Express.js · SQL · PostgreSQL · Supabase · Cloudflare Workers · AWS · Docker

Education

  • Software engineering

    Universidad Capitán General Gerardo Barrios

    June 2021 – December 2024

  • Systems engineering technician, programming

    Universidad Capitán General Gerardo Barrios

    2018 – 2020