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I will build node js express rest apis
Abdullah Butt
Top Rated
About this gig
Need a reliable Node.js backend, REST API, or third-party integration for an existing web or mobile product?
I'm a Top Rated software developer with 250+ Fiverr reviews. I build and fix backend systems using Node.js, Express.js, PostgreSQL, Firebase and REST APIs.
I can help with:
- Custom REST API endpoints
- Node.js and Express.js backend development
- PostgreSQL or Firebase integration
- Authentication and user flows
- Third-party API and webhook integration
- Existing API bugs and failed requests
- Error handling, validation and performance
- Clean API structure and documentation
- Backend support for React, Flutter or other clients
Packages are scoped by endpoints and complexity, so please message me before ordering if your API involves payments, multiple services, legacy code, or complex business logic.
Send your requirements, current code/API docs if applicable, and the expected flow. I'll confirm the best package before we start.
Get to know Abdullah Butt
Abdullah Butt
Full Stack and Flutter Developer Node React AI APIs
Top Rated
- FromPakistan
- Member sinceAug 2018
- Avg. response time1 hour
- Last delivery1 month
Languages
Urdu, English, Punjabi
Top Rated software developer with 7+ years on Fiverr and 250+ five-star reviews.
I build, fix and scale mobile and web products using Flutter, React, Node.js, PostgreSQL, Firebase and Supabase. I work on Flutter MVPs, backend APIs, SaaS apps, AI integrations with OpenAI and Gemini, RevenueCat subscriptions, app rescue, performance fixes and deployment.
I also work with Lovable, Replit, Bolt and other AI-generated codebases.
Send me your idea or broken build and I will reply with a clear plan.
My Portfolio
FAQ
Can you work on an existing Node.js backend?
Yes. I can add endpoints, repair APIs, integrate external services and improve an existing Express.js backend.
Which databases can you work with?
PostgreSQL and Firebase are directly within this Gig's positioning. Share your current database setup before ordering.
Can you connect an API to my React or Flutter frontend?
Yes. Backend/API integration for an existing web or mobile frontend can be included once the required flow is defined.
Can you integrate third-party APIs and webhooks?
Yes. Send the provider's documentation first. Complexity varies significantly between APIs, so some integrations require a custom offer.
Does the number of endpoints always determine the price?
No. Authentication, payments, data transformations, realtime behavior and external services can make a single endpoint more complex than several CRUD endpoints.
Do you provide source code?
Yes. Changes/source code for the agreed development scope are included
