API development & integrations

Who this is for

Businesses whose systems need to talk to each other, and products that need to offer an API or connect to someone else’s. If people are copying data between systems by hand, there’s probably an integration waiting to be built.

Integrations

We’ve integrated PHP and Laravel applications with payment providers including Stripe, PayPal, SagePay and PayPoint, with accounting software, and with a range of CRMs, email platforms and internal systems. In PaidProper, for example, invoices are pushed to Xero by queued background jobs, so a slow response from Xero never holds up the person using the app.

What good integration work looks like

• Queued by default — calls to other services happen in the background with sensible retries.
• Idempotent — repeating a request or a webhook never charges twice or creates duplicates.
• Observable — failures are logged and surfaced, not silently swallowed.
• Secure — credentials are stored properly, webhooks are verified and access is scoped.
• Isolated — the rest of the application doesn’t need to know how the other service works.

Building APIs

When your application needs an API — for a mobile app, a partner or another internal system — we design it around the people who will consume it: predictable resources, consistent errors, authentication that fits the use case, versioning and documentation. We think about how the API will change over years, not just how it looks on day one.

Relevant experience

The original Coder Studios services were API development and custom integrations, helping old and new systems talk to each other. That work continues today in client projects and in our own products.

How an engagement usually works

We start by reviewing both sides of the integration: your system and the service you’re connecting to. Then we agree the data flow, failure handling and a first working connection, and build out from there.