I will integrate rest api and webhook into your web or mobile app

J
janitha2000
J
janitha2000
Janitha Dilshan
integrate rest api and webhook into your web or mobile app
Full Screen
integrate rest api and webhook into your web or mobile app
Full Screen
Full Screen
integrate rest api and webhook into your web or mobile appintegrate rest api and webhook into your web or mobile appintegrate rest api and webhook into your web or mobile app

About this gig

Looking to connect your web or mobile app to third-party services, payment gateways, or AI models? I will integrate any REST API, GraphQL, or Webhook into your codebase securely, cleanly, and efficiently.


With 6+ years of full-stack engineering experience (Next.js, React, Node.js, Python, Flutter), I build reliable, production-grade integrations with robust error handling.


What I Can Integrate:

Payment Gateways: Stripe, PayPal, Razorpay, Lemon Squeezy

AI & LLMs: OpenAI ChatGPT, Google Gemini, Anthropic Claude

Authentication & DB: Firebase, Supabase, Auth0, PostgreSQL

Communication: Twilio SMS, WhatsApp API, SendGrid, Resend

Maps & Location: Google Maps API, Mapbox, Geocoding

Custom REST APIs, GraphQL, Webhooks & Automated Cron Jobs


Why Choose Me?

Clean, secure, and well-documented code

Robust payload validation and error logging

Fast turnaround and 100% satisfaction guarantee


Please message me before placing an order to discuss your API requirements!


  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Programming language

    • JavaScript

  • Frontend framework

    • Flutter
    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • FastAPI
    • Node.js
    • Supabase
    • Firebase

Get to know Janitha Dilshan

Janitha Dilshan

Senior Full Stack, Flutter and Ai SaaS Software Engineer

5.0(4)
  • FromSri Lanka
  • Member sinceNov 2020
  • Avg. response time2 hours
  • Last delivery2 years

  • Languages

    English
Hi, I'm Janitha — a Senior Full-Stack, Mobile & AI SaaS Engineer with 6+ years of experience and founder of InnoXpert. I build production-ready web platforms, Flutter mobile apps, and backend APIs for startups worldwide. Core Stack: • Next.js 15, React, TypeScript & Tailwind • Flutter Mobile Apps (iOS & Android) • Node.js, Python, PHP & REST APIs • AI SaaS & Chatbots (Gemini / OpenAI) • Emergency Bug Fixing & Optimization Guaranteed clean code, 95+ PageSpeed & 24/7 support. Message me to discuss your project!

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