API Integration Services

Two systems that both hold your customer data and never speak to each other cost you an employee. We build the connection properly — with error handling, logging and alerts, not a script that dies silently on a Sunday.

The Real Cost of Disconnected Systems

Manual data transfer between systems is expensive in ways that never appear on an invoice. Someone retypes orders and occasionally mistypes one. Stock is right in the warehouse and wrong on the website for six hours a day. Finance reconciles two reports that disagree and nobody can say which is correct.

Integration removes the transcription step entirely. The order that arrives in the store appears in accounting with the same reference, the same total and the same timestamp, because it is the same record rather than a copy someone made.

What We Integrate

ERP and accounting systems, including e-invoicing
E-commerce platforms and marketplaces
Payment gateways, banks and instalment providers
Cargo, courier and logistics providers
CRM, marketing automation and e-mail platforms
WhatsApp Business, SMS and notification services
Warehouse, barcode and RFID systems
HR, payroll and time-tracking software
Custom REST and GraphQL API design for your own products
Middleware layers where several systems must stay in step

Integrations That Survive Contact With Reality

The difference between a demo integration and a production one is entirely in the failure cases. Partner APIs go down, rate-limit you, change a field without warning, or return success and then not have created the record. An integration that assumes the happy path will lose data, and you will find out from a customer.

We build with queued jobs and retries with backoff, idempotency so a retry cannot create a duplicate order or double-charge, validation at the boundary, dead-letter handling for records that repeatedly fail, structured logging of every exchange, and alerting that reaches a person when something is genuinely stuck.

Every integration also gets a dashboard: what synced, what failed, what is queued. When finance asks why an order is missing, the answer takes thirty seconds instead of a day.

When a System Has No API

Older business software often has no usable API, and replacing it is not always an option. We work with what exists: direct database integration with a read-only or carefully scoped account, scheduled file exchange over SFTP, parsing of exported reports, or a small adapter service that presents a clean modern API in front of the legacy system.

These approaches need more care around data integrity and change detection, and we document exactly what each one assumes so a future upgrade does not break silently.

How We Deliver

We start by mapping the data: which system owns each field, what happens on a conflict, how often synchronisation needs to occur, and what "correct" looks like for each record type. That conversation prevents most of the arguments that integrations otherwise cause.

Build happens against a test environment with real sample data, then a parallel run where both the old manual process and the integration operate so discrepancies surface before cutover. After launch you get documentation, monitoring and an agreed support arrangement, and the code is yours.

Frequently Asked Questions

The questions we hear most.

If it has an API, almost certainly. If it does not, we work with database integration, scheduled file exchange or an adapter layer. Part of our initial audit is establishing exactly how each of your systems can be reached and what that implies for reliability.

A single well-documented integration, such as a store to an accounting system, typically takes two to five weeks. Multi-system projects with a middleware layer usually run two to four months depending on how many edge cases the business has.

Requests are queued and retried with backoff rather than lost, and operations are idempotent so a retry cannot duplicate a record. If something fails repeatedly it is quarantined and a person is alerted with the details, so failures are visible rather than silent.

It depends on the number of systems, the quality of their APIs, how much data mapping is required and whether real-time or scheduled synchronisation is needed. We quote fixed price per integration against a written specification after a short technical discovery.

Yes. Traffic is encrypted in transit, credentials are stored in a secrets manager rather than in code, access is scoped to the minimum required, and we log access without logging sensitive payload content. Data-handling terms are agreed in writing before work starts.

Yes. We design and build REST and GraphQL APIs with authentication, rate limiting, versioning and documentation, whether for your own applications, for partners or to open a system that currently has no programmatic access.

Not always, and it costs more. Stock and pricing usually justify real-time; monthly accounting exports rarely do. We recommend the interval each data type actually needs, which often reduces both cost and load on the systems involved.

You do. Source code, documentation and infrastructure configuration are handed over on delivery, and the integration runs on your infrastructure or accounts, so you are never dependent on us to keep it operating.

The next success story
is yours.

The first consultation is free. We prepare a tailored proposal within 24 hours.

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API Integration Services

The Real Cost of Disconnected Systems

What We Integrate

Integrations That Survive Contact With Reality

When a System Has No API

How We Deliver

The questions we hear most.

Continue exploring.

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The next success storyis yours.

The next success story
is yours.