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Fiverr Pro
English
$
USD
I will integrate third party apis and build custom rest apis
Rahul Khedekar
About this gig
Need a reliable API integration or custom REST API for your web app, SaaS platform, or business software?
I develop secure, scalable API solutions using Node.js, Express.js, MongoDB, webhooks, and third-party services. Whether you need to connect an external API, build a custom backend API, automate workflows, or fix an existing integration, I can help.
What I can build:
- Third-party API integration
- Custom REST API development
- Webhook integration and automation
- OpenAI and AI API integrations
- WhatsApp and Meta API integrations
- Payment gateway and SaaS integrations
- OAuth, JWT and API key authentication
- MongoDB and database integration
- Background jobs, queues and scheduled tasks
- API debugging, testing and deployment
Why work with me?
- Production-focused backend development
- Secure and maintainable architecture
- Clean, scalable code
- Experience with real SaaS and messaging platforms
- Clear communication and long-term support
Tech stack: Node.js, Express.js, JavaScript, MongoDB, Redis, REST APIs, BullMQ and Firebase.
Please message me before ordering so I can review your API documentation and recommend the right package.
Get to know Rahul Khedekar
Rahul Khedekar
AI Product Engineer SaaS AI Apps Custom Software
- FromIndia
- Member sinceJan 2026
- Avg. response time1 hour
Languages
Marathi, English, Hindi, Gujarati
I build AI-powered software products for startups, founders, and businesses. My expertise includes AI SaaS platforms, custom web applications, Chrome Extensions, Telegram Mini Apps, business automation, secure backend systems, and API integrations. From idea to deployment, I focus on scalable architecture, clean user experiences, and reliable software. If you need an MVP, AI application, SaaS platform, or custom business software, I can help turn your idea into a production-ready product.
My Portfolio
Other Software Development Services I Offer
FAQ
Can you integrate any third-party API?
Can you integrate any third-party API?
Can you build a custom REST API from scratch?
Yes. I can design and develop custom REST APIs using Node.js and Express.js, including authentication, database integration, validation, error handling, webhooks, and deployment-ready backend architecture.
Can you integrate OpenAI, WhatsApp, payment, or other business APIs?
Yes. I can work with OpenAI and AI APIs, WhatsApp and Meta APIs, payment services, email services, SaaS platforms, CRM systems, and other third-party APIs when proper documentation and access are available.
Can you work with webhooks and automation?
Yes. I can implement webhooks, scheduled jobs, background processing, queues, API-triggered workflows, and backend automation for applications that need reliable event-based processing.
Can you fix an existing API integration?
Yes. I can debug existing REST API integrations, authentication problems, webhook failures, incorrect request or response handling, database issues, and backend errors.
Do you provide the source code?
Yes. Source code is included according to the selected package. I write clean and maintainable code so your application can be extended or maintained in the future.
What do you need before starting?
Please provide your project requirements, API documentation, required features, existing codebase if applicable, authentication details or sandbox credentials, and information about your current technology stack.
