API & System Integration
Make your systems talk properly
API and system integration connects the software you already use, so data moves between tools automatically and reliably. It is for businesses retyping information between a CRM, accounting package, store or warehouse system, or running syncs that fail without anyone noticing.
What's included
Third-party API integration
Authentication, pagination, rate limits and webhooks handled properly, with retries and a log of every request that mattered.
Backend and internal APIs
A documented API for your own product, so web, mobile and partner tools use one implementation instead of three.
Payment gateway integration
Checkout, subscriptions, refunds and webhooks wired to a provider you control, with the records reconciled after the fact.
Data synchronisation
Scheduled and event-driven sync with clear ownership of each field, so two systems never overwrite each other silently.
System interoperability
CRM, ERP, accounting, inbox and warehouse tools connected around one shared source of truth.
Monitoring and alerts
Health checks, failure notifications and a dashboard that shows when a connection last worked.
What you receive
Written scope
- Integration map and data ownership rules
- The connectors, services or internal API
- Authentication and secret management
- Retries, error handling and logging
- Monitoring and failure alerts
- Documentation for the next developer
Agreed in writing before any work starts.
How long it takes and what it costs
How long does it take?
Depends on scope. You get a written milestone schedule with your quote, and a realistic estimate rather than one designed to win the job.
What does it cost?
Fixed quote after a free 30-minute call. The price follows the number of systems involved and how good their APIs are.
The problems this fixes
Copy-paste between tools
Data is moved by hand because the systems were bought at different times by different people, and nobody owns the join.
Silent failures
A sync stops one night and nobody notices until a customer does. Without logging and alerts, integration failures are invisible.
Payments that do not reconcile
Orders, invoices and payouts drift apart because the gateway, the store and the accounts package each keep their own version of the truth.
How the work runs
Tools we typically use
- Node.js
- REST
- GraphQL
- Webhooks
- PostgreSQL
- Stripe
Frequently asked questions
What if the tool we use has no API?
We use scheduled exports, a supported database view, or a documented file exchange. If a tool truly offers no access, we will say so rather than build a fragile screen-scraper.
Can you fix an integration someone else built?
Yes. We start by reading the existing flow, adding logging, and reproducing the failure before changing anything, so the fix is based on the actual cause.
How is sensitive data protected?
Secrets live in environment configuration rather than source code, endpoints require authentication, and payloads carry only the fields the integration needs.
Do you document what you build?
Every integration ships with a written map: endpoints, schedules, field ownership, failure behaviour and how to re-run a failed job.