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Fiverr Pro
English
$
USD
I will develop a custom API for your application or platform
Frontend Expert
About this gig
Need a custom API built for your web app, mobile app, SaaS platform, dashboard, or third-party system? I can design and develop a secure, reliable, and well-structured API based on your exact requirements.
With 7+ years in backend and API development, I build custom REST or GraphQL APIs with authentication, database integration, validation, error handling, rate limiting, third-party integrations, and clear documentation.
What I can build:
- Custom REST or GraphQL APIs
- Backend APIs for web or mobile apps
- Authentication and user permissions
- CRUD endpoints and business logic
- Database-backed API systems
- Third-party integrations and webhooks
- API documentation and handover
Tech stack can include Node.js, Express.js, Python, FastAPI, Django, Laravel, PostgreSQL, MySQL, or MongoDB.
Message me first with your project details so I can suggest the right API structure.
Get to know Frontend Expert
Frontend Expert
API Developer, REST and GraphQL, Integrations, Payments
- FromPakistan
- Member sinceJul 2025
Languages
Urdu, English
I build custom REST and GraphQL APIs and connect third-party platforms so data moves securely between systems. With 7+ years of backend experience, I handle payment integrations, CRMs, shipping APIs, webhooks, OAuth, rate limits, error handling, and clear documentation. My goal is to create stable integrations that are reliable, scalable, and easy to maintain.
My Portfolio
FAQ
Can you build both REST and GraphQL APIs?
Yes. I can build REST APIs, GraphQL APIs, or suggest the best option based on your project.
Can you connect the API with my frontend or mobile app?
Yes. I can build the API so it works smoothly with your existing frontend, mobile app, or third-party system.
Do you provide API documentation?
Yes. I can provide clear documentation using Swagger, OpenAPI, or a simple endpoint document.
Can you add authentication and permissions?
Yes. I can add JWT, OAuth, role-based permissions, or custom authentication depending on your needs.
What do you need to start?
I need your project idea, required features, endpoint list if available, database details, user roles, and any integrations you need.
How long does the whole process take?
Delivery times range from 7 to 18 days depending on the package. I provide regular updates throughout the project.
