API integration & bridging specialists

API integration that connects the platforms your business runs on

We build the integrations and bridges that move data between your systems automatically — accounting, ERP, ecommerce, warehouse, CRM and courier platforms — so that the same record is never entered twice.

Fixed-scope engagements, UK-based engineers, code and documentation handed over on completion.

A typical flow we build
01 Customer places an order in Shopify
02 Order pushed to the warehouse system on payment
03 Invoice raised in Sage with correct tax codes
04 Despatch and tracking written back to the order
05 Stock level corrected across every channel

Webhook-driven, logged, retried on failure — no spreadsheets, no overnight batch surprises.

What we do

Related services. Most engagements involve at least two of them.

Integration guides by platform

Each platform has its own page covering authentication, available endpoints and the data flows we are most often asked to build.

From the blog

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Accounting & finance · Latest article Multi-currency integration: Handling multi-currency between ecommerce and ERP for eBay and Shopify A practical look at multi-currency integration for teams connecting eBay, Shopify and the systems around them, and the decisions that keep the data trustworthy. Read the article →

Why businesses come to us

Most people find us after an off-the-shelf connector has quietly failed, or because no one will take responsibility for the seam between two systems. Here is what changes when we take it on.

You know the price before we write code

The scope and a fixed price are agreed in writing first. No open-ended day rate, and no bill for discovery work that never ships.

Professional UK based team

Every integration is designed and built by our own experienced engineers here in the UK. Nothing is handed off to offshore agencies or freelancers you never meet.

It keeps working when something breaks

Retries that respect each API rate limit, an alert the moment a transfer fails, and a log that traces any single record from end to end.

One team owns the join

When two vendors blame each other, we hold the connection between your systems and the evidence of exactly where a record stopped.

Recent work

All case studies →

Illustrative engagements — replace with named client detail once approvals are in place.

What clients say

All reviews →
★★★★★ Consistently rated 5 / 5
★★★★★
“We had three systems that never agreed on stock. They scoped it, gave us a fixed price, and the build did exactly what the document said it would. Two years on it has never needed a phone call.”
Operations Director Multi-channel homeware retailer · Ecommerce
★★★★★
“Our old warehouse system had no API and the vendor had gone quiet. They wrapped it in a proper interface and connected it to NetSuite without us having to replace anything. Exactly the pragmatic approach we needed.”
Head of IT Third-party logistics provider · Warehousing
★★★★★
“The thing that stood out was that the person on the discovery call was the person who wrote the code. No account manager, no offshore team. Questions got answered by someone who actually knew the answer.”
Finance Manager B2B equipment supplier · Wholesale

Discuss your integration

Call 01303 883111 or email hello@api-integrations.co.uk. We will tell you honestly whether an integration is the right answer to the problem you have described.