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service 04

API Integration

API integration services for businesses that need their software to work with external systems such as payment gateways, accounting tools, CRMs, shipping providers, and more.

What's included

Every integration project I deliver includes the following as standard.

  • A working connection between your system and the third-party service, tested end-to-end
  • Proper error handling, if the third-party service goes down, your system fails gracefully instead of breaking
  • Security built in, data transmitted correctly, credentials stored safely, no shortcuts
  • Full documentation of how the integration works and how to manage it
  • A ready-to-run test collection your team can use to verify the integration at any time
  • Deployed to your environment and confirmed working in production
  • 2 weeks post-launch support included

What I build

Types of integrations I take on most often.

  • Payment system connections

    connect your website or software to a payment provider (Stripe, PayPal, JazzCash, EasyPaisa) so customers can pay online, including the full payment flow

  • Accounting software sync

    connect your sales system and accounting software so invoices, payments, and customer records sync automatically with no manual re-entry

  • Shipping and logistics integrations

    connect to a shipping provider so orders automatically generate shipments and tracking numbers are sent to customers

  • CRM and marketing tool connections

    when a customer submits a form, they automatically appear in your CRM or email marketing list

  • FBR e-invoicing

    connect your invoicing system to FBR's platform and handle the technical compliance requirements for Pakistan

  • Connecting two systems that don't talk to each other

    ou have two pieces of software that require manual copying between them; I build the connection that makes it automatic

How a project runs

  1. 1

    Mapping the connection

    I understand what data needs to move between systems, in which direction, and what should trigger it. I document this clearly before writing a line of code — the most expensive integrations are built on misunderstood requirements.

  2. 2

    Building against test environments

    Every major service has a test mode. I build and test the entire integration in test mode before touching a live environment or real data.

  3. 3

    Edge case testing

    The easy path always works. I test what happens when a payment fails, when a service is temporarily unavailable, or when an unexpected response comes back. These are the scenarios that break integrations in production.

  4. 4

    Deployment

    I deploy to your production environment and run the full integration end-to-end with real credentials. Confirmed working before I hand over.

  5. 5

    Documentation and handoff

    You get written documentation explaining what the integration does, how to test it, and what to do if something goes wrong.

What I need from you

To get started without delays.

  1. 01 A description of what you want to integrate, which systems, what data should move between them, and what should trigger it
  2. 02 API documentation or sandbox access for the services you want to integrate (most major services provide this)
  3. 03 Access to your existing system if the integration is being added to something already built
  4. 04 Your credentials for any third-party services involved, or sandbox credentials to start

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Let's talk

Tell me about your project. I reply to all messages within 24 hours.

What happens next

  1. 1 I read your message and understand what you need
  2. 2 I reply within 24 hours with questions or an initial proposal
  3. 3 We have a short call to align on scope and timeline
  4. 4 We start building

let's make something together

What does it do, who is it for, what does success look like?