Ej Sinfuego

building bridges between concepts and working code

 

Full‑stack developer focused on TypeScript/React and backend APIs. I ship production features end‑to‑end and care about performance, reliability, and DX.


Currently freelancing: maintaining and delivering features for The Freelance Movement Tribe (Atlas LMS) and building an e‑commerce platform for a small business in the U.S.


Recently expanding into DevOps—CI/CD, monitoring, and cost‑aware deployments.

2024 - Present

Junior Software Developer - The Freelance Movement Tribe

Atlas LMS used by thousands of freelancers. Delivered features across content workflows and RBAC, improved UX performance, and handled ongoing maintenance and support.

RedwoodJS

PostgreSQL

ReactJS

GraphQL

TailwindCSS

AWS

Vercel

VPS

2024 - Present

E-Commerce Platform - Bellas Bakery

0→1 storefront and admin for a local bakery: product catalog, cart/checkout, inventory, and admin dashboards. Focus on fast browsing and simple operations.

Spring-Boot

ReactJS

NextJS

ExpressJS

Heroku

Other Notable Projects

Stickier Note

Native sticky notes app that stays on top for quick capture.

Electron

ReactJS

TailwindCSS

Stickier Note

Role

Solo developer

Problem

I needed a lightweight notes tool that always stays visible across apps.

Key actions

  • Electron shell with React UI and Tailwind styling
  • Window always-on-top and transparency for minimal distraction
  • Local persistence and keyboard shortcuts for quick capture

Results

  • Faster task capture; app launches in under a second
  • Daily personal use; iterating based on small usability wins