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Open to full-time remote roles

Justo
Becerra

Full-stack developer. I build web and mobile products end to end, from the first conversation with a client to the deploy.

Portrait of Justo Becerra

About

I've been building for the web since 2022: React and Next.js on the front end, Node.js and Java on the back end, and React Native when the product needs to live on a phone.

I like owning a feature from requirements to production, and I'm most at home on logistics problems: shipments, tracking, getting things where they need to go. Day to day I work with Claude Code to move faster on new features and legacy code alike.

Outside work I play video games, try out new tools, and work out to balance all the hours at a desk.

Frontend
TypeScript, React, Next.js, Astro, Tailwind, Redux, Zustand, React Query
Backend and data
Node.js, Express, Java, Spring Boot, Go, PostgreSQL, Oracle DB
Mobile
React Native, Expo, Firebase
Tooling
Git, GitHub, Vite, Vercel, Railway, Claude Code

Experience

  1. Jun 2025 – Oct 2026

    Full Stack Developer · Forward Thinking Systems

    Jericho, NY, US (remote)

    Built a shareable web app that tracks shipments from warehouse to depot, maintained a large legacy app for internal and external users, and designed the server and database work that keeps its data current.

    Next.js, React, TypeScript, Java, Spring Boot, Oracle DB

  2. Mar 2024 – Jun 2025

    Full Stack Web Developer · Vinculum

    Buenos Aires, Argentina

    Built core web app features that lifted user engagement by 15%, gathered requirements directly with clients, designed database structures and APIs, and shipped with zero-downtime deploys.

    Astro, React, TypeScript, Zustand, React Query, Node.js

  3. Jun 2022 – Sep 2023

    Frontend & React Native Developer · DevLabs

    Wilmington, DE, US (remote)

    Shipped mobile and web features that raised user retention by 10%, and cut the critical error rate by 20% by debugging the app's API calls.

    React, React Native, TypeScript, Redux, React Query, Tailwind

Client work

Products I've built for businesses, from gyms to consultancies.

Screenshot of D73 Club Bell

Gym mobile app

D73 Club Bell

iOS and Android app for the Club Bell and D73 gyms. Trainers build day-by-day routines with exercise videos; members follow them and log their weights.

  • React Native
  • Expo
  • TypeScript
  • Firebase
Available on the App Store and Google Play
Screenshot of Management Negocios

Consulting firm website

Management Negocios

Multi-page website for IMPRO Consulting Group, a management consultancy, presenting its team, clients, business units and contact channels.

  • React
  • TypeScript
  • Vite
  • React Router
  • Tailwind
Screenshot of Sinergia Valores

Business website

Sinergia Valores

Website for an insurance company, designed and built as a freelancer, with company information and a way to get in contact.

  • Astro
  • TypeScript
  • Tailwind

Personal projects

Smaller apps I built to try out APIs and stacks.

Screenshot of Fun Quiz Time!

Quiz app

Fun Quiz Time!

A history quiz. Most questions come from The Trivia API, and users can submit their own.

  • Next.js
  • TypeScript
  • Tailwind
  • Go
  • PostgreSQL
Screenshot of Marvel Seeker

Character browser

Marvel Seeker

Browse characters from the Marvel universe, with data from the Marvel public API.

  • Next.js
  • TypeScript
  • Redux
Screenshot of Rick & Morty App

Character comparison app

Rick & Morty App

Pick characters from Rick and Morty and see which episodes they share.

  • Next.js
  • TypeScript
  • Tailwind