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Fiverr Pro
English
$
USD
I will integrate any third party API into your app
Frontend Expert
About this gig
Need to connect your app to a third-party service such as payments, shipping, CRM, accounting, SMS, email, maps, or any API-based platform? I can help you make the integration work reliably.
With 7+ years in backend and API development, I integrate REST and GraphQL APIs into web and mobile apps with proper authentication, webhook handling, error handling, rate-limit handling, and clean documentation.
What I can integrate:
- Payment gateways such as Stripe and PayPal
- CRM, e-commerce, and accounting tools
- Shipping, SMS, email, and maps APIs
- REST or GraphQL services with documentation
- Webhooks and two-way data sync
You will get a clean, reliable, and documented integration instead of a fragile quick fix.
Message me first with the API/service you want to connect.
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
Which APIs can you integrate?
I can integrate any API with proper documentation, including Stripe, PayPal, CRMs, shipping, accounting, SMS, email, maps, and other REST or GraphQL APIs.
Can you integrate an API into my existing app?
Yes. I can add API integrations to your existing web or mobile app, depending on your current codebase and requirements.
Do you handle webhooks and two-way data sync?
Yes. I can set up webhook handling, event processing, and two-way data sync where the API supports it.
What do you need to start?
I need the API documentation, access credentials or sandbox access if available, a short description of your app, and the exact data you want to send, receive, or sync.
Do you provide documentation after integration?
Yes. I can provide clear notes or technical documentation explaining what was integrated, how it works, and how to maintain it.
Do I need a new merchant account?
No. Your existing payment processor works with the app. I simply integrate it.
