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Fiverr Pro
English
$
USD
I will develop nodejs rest API, custom backend and expressjs application
Olivia Carter
About this gig
Need to connect your application with a third-party API or automate data between platforms?
I will integrate REST APIs, third-party APIs, webhooks, and backend services using Node.js, Express.js, and JavaScript.
I can connect your application with payment gateways, SaaS platforms, CRM systems, AI services, communication tools, eCommerce platforms, and other API-based services.
I can help with:
- Third-party API integration
- REST API integration
- Webhook setup and integration
- Node.js API integration
- Stripe and payment API integration
- OpenAI API integration
- Twilio API integration
- Shopify or WordPress API integration
- Authentication and API keys
- JSON request/response handling
- Data synchronization
- API troubleshooting and testing
I focus on reliable backend integration, proper error handling, secure API communication, and clean implementation.
Whether you need a new API connection or an existing integration fixed, send me the API documentation and requirements so I can review the scope.
Get to know Olivia Carter
Olivia Carter
Nodejs Backend Developer, REST API and API Integration
- FromNigeria
- Member sinceFeb 2026
- Avg. response time1 hour
Languages
English, Spanish
Need a reliable developer to build your backend or connect your applications?
I specialize in API integration, REST API development, custom API development, and third-party API integration for websites, web apps, and SaaS platforms. I build Node.js backends, Stripe payment integrations, webhooks, database integrations, and scalable API solutions tailored to your business. Expect clean development, reliable results, and clear communication from start to finish.
My Portfolio
FAQ
What do you need from me to start the project?
Please send your project requirements, API specifications or documentation, preferred database, existing source code if applicable, and any authentication or third-party integration requirements.
Can you build a custom REST API with Node.js?
Yes. I can develop custom REST APIs using Node.js and Express.js, including API endpoints, CRUD operations, authentication, validation, error handling, and database integration.
Can you connect my REST API to MongoDB or another database?
Yes. I can integrate your Node.js backend with MongoDB, MySQL, or PostgreSQL and build the required database models, queries, and API functionality.
Can you integrate a third-party API into my backend?
Yes. I can integrate third-party APIs, webhooks, payment services, AI APIs, SaaS platforms, and other external services into your Node.js backend.
Can you add authentication and user management?
Yes. I can implement secure authentication, JWT-based access, protected routes, user registration/login, authorization, and role-based access where required.
Can you work with an existing Node.js backend?
Absolutely. I can extend an existing Node.js backend, add new REST API endpoints, connect databases or external APIs, improve functionality, and troubleshoot backend issues.
