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Portfolio

Román Valles

Full Stack Developer building clean web apps with React, Next.js, Node.js, and cloud tools.

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About

I build web products that are clear, fast, and scalable.

I have 4+ years of experience working with React, Next.js, Node.js, Firebase, Docker, AWS, and Google Cloud.

01 / Web apps

Full Stack

Frontend, backend, auth, APIs, databases, and the glue that makes a product work.

02 / Delivery

Cloud

Deployments with Docker, AWS, Google Cloud, CI/CD, and practical production workflows.

03 / Careful by default

Security

Safer APIs, cleaner code, vulnerability review, and security-minded decisions.

Experience

I have worked on real products, internal tools, cloud deployments, and multimedia platforms.

Jun 2022 - Present

Cosmind IT Partner / Santa Fe, Argentina

Full Stack Developer

I build and maintain web apps with Next.js, Vite, Firebase, and Tailwind. My work includes auth, users, real-time data, payments, and cloud deployments.

  • Next.js
  • Firebase
  • Mercado Pago
  • AWS
  • GCP

Jun 2025 - Aug 2025

Axelia Cybersecurity / Barcelona, Spain

Full Stack Developer

I helped modernize internal cybersecurity tools, moved frontend work to Next.js, added Docker workflows, and supported API/security review tasks.

  • Next.js
  • Docker
  • Cybersecurity
  • APIs
  • CI/CD

Aug 2023 - Mar 2024

A3 Sports / Buenos Aires, Argentina

Full Stack Developer

I built a sports platform for organizing matches, videos, and plays using Next.js, Firebase, Tailwind, and the YouTube API.

  • Next.js
  • Firebase
  • YouTube API
  • Tailwind CSS

Skills

The tools I use to design, build, and ship web products.

01

Frontend

Interfaces, components, layouts, and smooth user flows.

  • React
  • Next.js
  • Astro
  • TypeScript
  • Tailwind CSS
  • Shadcn/UI

02

Backend & Cloud

Auth, data, integrations, deployments, and cloud basics.

  • Node.js
  • Firebase
  • Docker
  • AWS
  • Google Cloud
  • Cloudflare

03

Product Work

Payments, APIs, automation, Git workflows, and security checks.

  • REST APIs
  • Mercado Pago
  • CI/CD
  • Git
  • Security
  • Automation

Projects

A selection of projects I built for clients, teams, and personal ideas.

Web apps, dashboards, e-commerce, internal tools, and UI-focused experiments.

Contact

Let’s build something together.

Available for full stack product work and cloud-focused delivery.