I will build a full stack web app or saas with react and node

A
arniecalderon
A
arniecalderon
Arnie
build a full stack web app or saas with react and node
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build a full stack web app or saas with react and node
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build a full stack web app or saas with react and nodebuild a full stack web app or saas with react and nodebuild a full stack web app or saas with react and nodebuild a full stack web app or saas with react and node

About this gig

Are you building a complex SaaS or a scalable Web Application? You need a Software Engineer who understands business logic, not just code.

Welcome! I specialize in building high-performance Full Stack applications and custom SaaS platforms using React, Next.js, TypeScript, and Node.js.

I focus on building production-ready web platforms with clean architecture, high execution speed, and secure backend integration.

My Tech Stack:

  • Frontend: React.js, Next.js, TypeScript, Tailwind CSS
  • Backend: Node.js, Express, REST APIs
  • Database & Cloud: PostgreSQL, Supabase, Firebase, Vercel

What I can build for you:

  • Custom SaaS Platforms & Web Applications
  • Interactive Admin Dashboards & Analytics
  • Multi-tenant systems with Role-Based Access Control (RBAC)
  • Third-party API Integrations & Webhooks

Why work with me?

  • Clean Code & Architecture: Built for performance and easy maintenance.
  • Responsive Design: Mobile-first, fast loading, and smooth UI/UX.
  • Direct Communication: Clear technical updates and on-time delivery.

Please send me a message before placing an order so we can discuss your project requirements in detail!

  • Programming language

    • TypeScript

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Source control

  • Frontend framework

    • Bootstrap
    • Next.js
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Express.js
    • FastAPI
    • NestJS
    • Node.js
    • Firebase

  • AI & low/no code builders

    • Claude
    • Cursor

Get to know Arnie

Arnie

Full Stack Engineer Multi Tenant SaaS and Business Web Apps

5.0(1)
  • FromPeru
  • Member sinceMay 2019
  • Avg. response time3 hours
  • Last delivery1 month

  • Languages

    English, Spanish
Full-Stack Software Engineer. I build multi-tenant SaaS and business web apps that reach production and stay there. Track record: • Creator and operator of Ventify — multi-tenant POS & inventory SaaS, live in 3 companies (top: 4 branches, 8,000+ products, ~600 sales/day, +97% sales). • 11 months as frontend dev for a Spanish B2B distributor, migrating their mobile sales app to web — team, code review, CI, tests. Stack: React, Next.js, TypeScript, Node.js, Django, PostgreSQL. Milestone-based delivery. Your repo and database in your accounts from day one. Native Spanish, technical English.

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