I will integrate rest api oauth webhooks and third party api

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Lalit Rajput

About this gig

REST API, OAuth, Webhook and Third-Party API Integration


I will integrate REST APIs, OAuth, webhooks, and third-party APIs for your app, backend, or business workflow.


I can help with:


  • REST API integration
  • OAuth and API key authentication
  • Webhook setup and handling
  • Third-party API connection
  • API request and response mapping
  • JSON data processing
  • API to database workflow
  • API to Google Sheets, CSV, or Excel
  • Error handling and retries
  • API bug fixing and testing


I work with Python, FastAPI, Flask, Node.js, Express.js, NestJS, ASP.NET Core, C#, SQL Server, PostgreSQL, and MySQL.


You will receive clean source code, setup instructions, and basic testing so your integration is easy to run and maintain.


Basic package is for 1 simple API endpoint or webhook. If your task includes OAuth, multiple endpoints, database integration, production deployment, scheduled sync, or complex business logic, please message me first so I can suggest the right package.


Please share API documentation, required workflow, sample request, sample response, and expected output before ordering.

Get to know Lalit Rajput

Lalit Rajput

API Integrations and Automation with Python and Dot Net

  • FromUnited Arab Emirates
  • Member sinceDec 2019
  • Avg. response time1 hour
  • Languages

    English, Hindi
Backend engineer with 12 years of experience building API integrations, automation, web scraping, and production-ready services in Python and Dot Net. I help businesses fix backend issues, connect third-party APIs, build scheduled jobs, and deliver clean, maintainable systems that run reliably in production. Strong in FastAPI, Flask, ASP.NET Core, SQL Server, PostgreSQL, Docker, AWS, and Azure.

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