API integrations
Reliable connections to partners, payment providers, and third-party systems.
Modern businesses depend on software that talks to other software — payment gateways, shipping carriers, CRMs, marketing tools, and partner APIs. I build and maintain those connections so data flows reliably and failures are handled gracefully.
Integration work is often invisible when it goes well and painful when it does not. I prioritise error handling, logging, and idempotent processing so you can diagnose issues quickly and avoid duplicate charges, missed orders, or stale data.
What this covers
- Payment providers — Stripe, PayPal, and similar; checkout flows, subscriptions, and webhook handling
- Third-party APIs — REST and GraphQL integrations with rate limiting, retries, and structured error responses
- Webhooks and event processing — inbound and outbound events with verification and reliable delivery
- Data synchronisation — keeping systems in sync without manual exports and imports
Whether you are adding a new provider to an existing site, connecting two internal systems, or cleaning up a fragile integration that breaks under load, I can assess the current setup and implement something maintainable.