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Fiverr Pro
English
$
USD
I will do custom API integration third party and rest API development
Halli
About this gig
Is your API integration failing, REST API not connecting, or third-party service not communicating with your website or app?
I will build, fix, and integrate reliable APIs that connect your systems, automate workflows, and keep your backend running smoothly.
Services Offered
- Custom API integration & REST API development
- Third-party API integration
- Webhook automation & API troubleshooting
- Stripe integration & payment APIs
- Twilio SMS API integration
- JSON/API data connection
- Backend development & API testing
Tech Stack
Python, FastAPI, REST API, JSON, Webhooks, Stripe, Twilio, PHP, Node.js, MySQL and PostgreSQL.
Why Choose Me
Clean and scalable development, secure API connections, proper testing, clear communication, and solutions focused on your actual business requirements.
Have an API project or integration issue? Contact me before placing an order and let's discuss the best solution.
Get to know Halli
Halli
Shipping API integration expert
- FromUnited Kingdom
- Member sinceJul 2026
- Avg. response time1 hour
Languages
English, Portuguese
I help businesses, startups, and entrepreneurs solve shipping and ecommerce integration problems with reliable API solutions. From shipping API, Shopify API, tracking API, ShipStation, FedEx, DHL and UPS integrations to REST API, webhooks, order tracking and shipping automation, I build clean, scalable systems that work. I focus on accurate data, dependable workflows, easy maintenance and clear communication throughout the project.
Contact me before ordering so we can discuss your shipping needs and the best solution.
Other Software Development Services I Offer
FAQ
Can you integrate a third-party API with my website or application?
Yes. I can integrate third-party APIs, REST APIs, payment APIs, CRM APIs, shipping APIs, and other external services with your existing backend or application.
Can you develop a custom REST API from scratch?
Yes. I can develop custom REST API endpoints using Python, FastAPI, PHP, or Node.js, including authentication, database integration, validation, testing, and documentation.
Can you fix a broken API integration or webhook?
Yes. I can troubleshoot API errors, failed requests, authentication problems, webhook issues, incorrect responses, and integration failures.
Can you integrate Stripe or Twilio API?
Yes. I can handle Stripe integration, payment workflows, Stripe webhooks, Twilio SMS API, notifications, and related backend automation.
What do you need to start my API integration project?
Please provide your API documentation, credentials or test keys, existing code/access where required, desired workflow, and any errors you are experiencing. Contact me first so we can confirm the scope.
