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Fiverr Pro
English
$
USD
I will integrate any API webhook payment gateway or CRM
Abdul Rehman
About this gig
Connect the tools your business depends on without fragile manual work. I will integrate a documented REST or GraphQL API, webhook, payment gateway, CRM, or third-party service into your existing application.
I can implement authentication, request and response mapping, webhook verification, retries, logging, sandbox testing, and concise technical documentation. Common projects include Stripe, PayPal, Twilio, WhatsApp, HubSpot, Shopify, Google APIs, and custom business platforms.
Please contact me before ordering with the API documentation, existing stack, and exact data flow. Third-party subscription and usage costs are not included. The package covers the agreed endpoints and workflownot unlimited changes to an external provider.
Get a dependable integration your team can maintain.
Get to know Abdul Rehman
Abdul Rehman
Full Stack AI Engineer
- FromPakistan
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English
Welcome! I am a Full-Stack Software Engineer with 4+ years of experience building scalable, high-performance web applications.From eye-catching, responsive front-end interfaces to robust, secure back-end architectures, I bridge the gap between user experience and technical execution. I specialize in the modern web ecosystem, working extensively with React, Next.js, Node.js, Express, and databases like PostgreSQL and MongoDB.
Other Software Development Services I Offer
FAQ
Can you integrate any API?
I can integrate accessible, documented APIs compatible with your application. I verify feasibility and account permissions first.
Are third-party fees included?
No. Provider subscriptions, transaction charges, and usage fees are paid directly by you.
What counts as one endpoint?
One distinct API operation, such as create customer, retrieve order, or receive one webhook event.
Can you build the API too?
Yes, but custom backend development is scoped separately from consuming an existing API.
Do you test payments in production?
I use sandbox or test mode first. Live validation is performed only with your authorization and safe test values.
Will you store my credentials?
No. Use revocable test keys when possible and rotate sensitive keys after delivery.
