I will build secure and scalable backend apis using nodejs

R
raynierm29
R
raynierm29
Osvaldo Raynier
build secure and scalable backend apis using nodejs
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build secure and scalable backend apis using nodejs

About this gig

I will develop robust, scalable, and secure backend services using Node.js, with clean architecture and best practices.

Technologies I use:

  • Node.js + Express / Fastify / NestJS (on request)
  • REST or GraphQL APIs
  • Authentication (JWT, OAuth, session-based)
  • MongoDB / PostgreSQL / MySQL / Redis
  • File uploads, payment gateways, email sending
  • Firebase, Supabase, or custom services

Clean code and modular structure

Documentation and clear API responses

Deploy-ready (Heroku, Render, VPS, etc.)

Whether you need a simple API or a full backend system, Ive got you covered.

  • Expertise

    • Algorithms & Data structures
    • Performance
    • Security
    • Databases
    • Source control

  • Programming language

    • JavaScript

  • Frontend framework

    • React.js
    • Tailwind CSS

  • Backend framework

    • Node.js

Get to know Osvaldo Raynier

Osvaldo Raynier

Code that looks good and runs even better

  • FromPanama
  • Member sinceFeb 2025
  • Last delivery10 months

  • Languages

    English, Spanish
🚀 Full Stack App Developer | Flutter • iOS • Android • Node.js • Go • React 🚀 I’m Osvaldo, a full-stack dev with 6+ years of experience building fast, elegant, and scalable apps. I work with Flutter or native (Swift/Kotlin), React/Next.js for web, and Node.js/Go for backend. I deliver modern UI/UX, clean architecture, API integration, and full deployment to App Store, Play Store, or web. Bilingual (EN/ES), clear communicator, and committed to quality. Let’s build something great.

Other Software Development Services I Offer

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