I will fix API integration, rest API errors and third party API issues

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nelson703
N
nelson703
Nelson
fix API integration, rest API errors and third party API issues
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fix API integration, rest API errors and third party API issues

About this gig

I will help you with API integration, REST API development, and fixing any API issues in your system.

If you are facing problems like broken API connection, webhook setup errors, or third-party API integration issues, I can fix it quickly and professionally.

I work with REST API, JSON API, backend API systems, payment APIs like Stripe API, and third-party services integration.

Whether you need API integration, API debugging, API error fixing, or webhook setup, I will ensure your system works smoothly without errors.

I specialize in:

  • REST API integration
  • API troubleshooting and debugging
  • Third-party API connection
  • Webhook setup and fixes
  • Backend API development
  • Payment API integration (Stripe, etc.)

If your API is not working, I will diagnose and fix it fast and efficiently.

  • Expertise

    • Algorithms & Data structures
    • Localization
    • Performance
    • Operating systems
    • Databases

  • Frontend framework

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

  • Backend framework

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

Get to know Nelson

Nelson

Cloud API and Automation Specialist

  • FromUnited Kingdom
  • Member sinceMar 2026
  • Avg. response time1 hour

  • Languages

    English
Hi, I’m a Cloud API and Automation Specialist with experience in WhatsApp Cloud API, Twilio API integration, SMTP setup, and transactional email systems. I help startups and businesses integrate: • WhatsApp OTP verification • WhatsApp notification systems • Twilio programmable messaging • Email API integration • SMTP service setup • Webhook automation If you need reliable WhatsApp automation, API integration, or email delivery setup for your app, website, or SaaS platform I’m here to help. Clean code. Fast delivery. Clear communication.

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