I will build your web app with secure authentication and rbac

J
javo0o
J
javo0o
Javier

About this gig

Are you looking for a developer who can build secure, production-ready web applications? I can help.

Im a full-stack developer with hands-on experience building real products from the ground up including a clinical management PWA with role-based access control (RBAC), encrypted patient data, and offline-first architecture, plus a real-time inventory management platform.

What I offer:

Custom features for your React/Node.js/TypeScript web app

Secure authentication and role-based access control (RBAC)

Data encryption and security best practices

Firebase/Supabase integration

Bug fixes and code improvements

Why work with me:

Clean, well-documented, maintainable code

Clear communication throughout the project

I take security seriously not an afterthought

Not sure which package fits your project? Send me a message and lets talk about what you need.


Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Javier

Javier

Developer

  • FromChile
  • Member sinceJul 2026
  • Languages

    Spanish, English
Full-stack developer specialized in secure, scalable web and PWA applications. I’ve built products from the ground up — including a clinical management suite with role-based access control (RBAC), encrypted patient data, and offline-first architecture, plus a real-time inventory management platform. I work with React, TypeScript, Node.js, and Firebase/Supabase, focusing on clean architecture and multi-tenant systems. Whether you need a new feature, a security fix, or a full module built from scratch, I deliver clear communication and well-documented code. Let’s build something solid together.