I will integrate, fix or develop any API, stripe API, firebase, supabase backend

A
apiwizardpro
A
apiwizardpro
Mercy O
integrate, fix or develop any API, stripe API, firebase, supabase backend
Full Screen
integrate, fix or develop any API, stripe API, firebase, supabase backend

About this gig

 PROFESSIONAL API INTEGRATION & BACKEND DEVELOPMENT EXPERT!


Are you looking for a reliable API developer to integrate, fix, or build powerful APIs for your business?


You're in the right place.


I specialize in API integration, API development, Stripe API, Firebase, Supa base backend, OAuth, JWT authentication, and custom backend systems that scale your business and automate workflows.


With proven experience working with startups, eCommerce brands, SaaS platforms, and automation systems, I deliver secure, fast, and scalable API solutions that actually work.


 WHAT I OFFER:

  • API Integration
  • API Development
  • Stripe API Setup
  • Firebase Backend
  • Supa base Backend
  • OAuth Login
  • JWT Security
  • Bug Fixing
  • Automation Setup
  • Performance Optimization.


 WHY THIS GIG WILL HELP YOU:

A properly integrated API system will:

  • Save time through automation
  • Increase business efficiency
  • Enable secure transactions
  • Connect multiple platforms smoothly


Ready to get started?


Send me a message NOW with your project details and I'll help you:


plan your API integration, fix existing issues, build a powerful backend system.


Let's turn your idea into a fully functional, scalable system that generates results.

  • Expertise

    • Debugging
    • Security
    • Operating systems
    • Design
    • Databases

  • Frontend framework

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

  • Backend framework

    • Express.js
    • FastAPI
    • Fastify
    • Next.js
    • Node.js

Get to know Mercy O

Mercy O

Software developer!

  • FromNigeria
  • Member sinceFeb 2026

  • Languages

    English
Need your apps, websites, or platforms to work together smoothly? I build reliable API integrations, CRM automation, and smart workflows for WordPress, Shopify, WooCommerce, Amazon, eBay, Etsy, Stripe, and more. I help businesses eliminate manual tasks, connect their tools, sync data, and automate repetitive work—saving time and helping you scale faster. Let’s simplify your workflow and get your systems working together.

My Portfolio

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