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Kamran Code

API Development & Integration

API development and integration: REST APIs, authentication, webhooks and data synchronisation between systems.

APIs are the contracts between your systems, partners and products. I design them to be predictable, secure and documented — with versioning, rate limits and error handling that clients can rely on.

That includes the other direction: consuming third-party APIs robustly, handling webhooks safely and keeping data in sync without silent failures.

  • Public or partner APIs for your product
  • Backend APIs for web and mobile frontends
  • Webhook processing and event-driven integrations
  • Data synchronisation between internal systems
  1. 01API design and OpenAPI documentation
  2. 02Authentication, authorization and rate limiting
  3. 03Webhook handling with retries and idempotency
  4. 04Integration tests and monitoring
  1. 01Understand

    Who uses the system, what they need to do, what the current process looks like and what actually has to change.

  2. 02Architect

    Data model, boundaries, integrations, where AI genuinely helps and where it doesn't — decided before code is written.

  3. 03Build

    Backend, frontend and data layers built incrementally, with working software reviewed early rather than a big reveal at the end.

  4. 04Integrate

    Payment providers, email, CRMs, model providers and internal services connected with clear contracts and error handling.

  5. 05Deploy

    Containers, CI/CD, environments, backups and monitoring so the system is operable — not just running.

  6. 06Improve

    Usage, performance and errors observed after launch and fed back into the next iteration.

Have a project in mind?

Tell me what you're trying to build. I'll come back with an honest view on scope, architecture and the right approach.