API integration,
without the guesswork.
Connecting the systems a business already runs — payment providers, CRMs, ERPs, carriers, legacy back-ends — with integrations that retry properly, log what happened, and keep working after the vendor changes their API.
API integration
services.
Most integration work is not hard because the protocol is hard. It is hard because the other side is undocumented, rate-limited, occasionally down, and owned by somebody else. That is the part we do.
Third-party API integration
Payments, accounting, CRM, carriers, identity, mapping. We read the vendor's docs, find where they are wrong, and build against what the API actually returns.
API design & build
REST or GraphQL, OpenAPI-first, versioned from day one — so your own API can change without breaking the clients already using it.
Legacy system integration
SOAP, fixed-width files, a database somebody else owns, an ERP with no API at all. We wrap it in something modern rather than rewriting it.
Webhooks & event pipelines
Idempotent handlers, signature verification, replay for the day the queue backs up — webhooks you can lose a message from and still be consistent.
Data sync & migration
Two systems, one truth. Reconciliation you can run on demand, conflict rules agreed with your team rather than guessed at by ours.
Monitoring & support
Alerting on the integration, not just the server. When a vendor deprecates an endpoint you hear it from us, not from a customer.
How we build
integrations that hold.
Same engineers from kickoff to handover. Weekly demos. No staff augmentation, no offshore rotation.
Contract first
The integration is agreed on paper before it is written — endpoints, payloads, error cases, who retries and how often. Most integration failures are disagreements, not bugs.
Assume the network fails
Timeouts, retries with backoff, idempotency keys, dead-letter queues. An integration that only works while both sides are up is not finished.
Observable by default
Every call logged with a correlation id, every failure alertable, a dashboard your team can read without us. Handover means you can run it.
Six steps to ship
an integration.
From a vendor's PDF and a promise, to something in production with alerts on it.
Discovery & API audit
1 weekWe read every system's documentation and then call it, because the two rarely agree. Rate limits, sandbox quality, auth model and the gap between promised and actual behaviour all land in one document.
Integration contract
1 weekPayload shapes, field mapping, error taxonomy and retry policy, written down and signed off by both sides. This is the document that settles arguments six months later.
Build against a stub
1 – 3 weeksA recorded stub of the vendor's API lets us build and test without waiting on their sandbox — and lets us reproduce their outages deliberately instead of hoping they never happen.
Live integration
1 – 3 weeksReal credentials, real data, one environment at a time. Reconciliation runs beside the integration from the first day so nobody has to trust it on faith.
Monitoring & alerts
3 – 5 daysDashboards for throughput, latency and failure rate; alerts on the integration's own health, not just the host's. Your team gets the runbook and the access.
Handover & care
OngoingDocumentation, a walkthrough with your engineers, and an agreement on who watches the vendor's changelog. Integrations rot when nobody owns them — we say out loud who does.
The actual
integration stack.
What goes into a Magora integration — typed clients, queues that survive deploys, and enough observability that the first person to notice a problem works for you.
- REST / JSON
- GraphQL
- Webhooks
- SOAP & XML
- gRPC
- SFTP & flat files
- OAuth 2.0
- OIDC
- JWT
- HMAC signing
- mTLS
- API keys, rotated
- RabbitMQ
- Kafka
- AWS SQS / SNS
- Redis queues
- Dead-letter queues
- Contract tests
- Recorded fixtures
- Fault injection
- Reconciliation jobs
- OpenTelemetry
- Grafana
- Sentry
- Correlation ids
- Structured logs
What clients
say.
Independently verified on Clutch — 4.9 out of 5 across 60+ reviews, from clients including Danone, Unilever, Toyota, Cisco, AstraZeneca and Grant Thornton.
Read the reviews themselves rather than a selection we chose — every one is verified by Clutch, including the projects that were harder than expected.
Integrations
we've shipped.
Four from the wider portfolio, each of which lives or dies on talking to somebody else's system.
Abacus Pay
Payment flows where a retry has to be safe and a duplicate charge is not an option.
See case study → Insurance · PlatformDayinsure
Quote and policy journeys built on top of insurer systems the platform does not own.
See case study → Healthcare · EnterprisePharmCard
Enterprise healthcare software joined to existing back-office and card systems.
See case study → Enterprise · DataRollio
Enterprise data automation — moving records between systems without losing them.
See case study →The honest
questions.
It depends far more on the other system than on ours. A well-documented modern API with a working sandbox — a payment provider, a mainstream CRM — is usually 3–5 weeks. An undocumented legacy system, or one where the sandbox behaves differently from production, can be three times that, and the difference is discovery work rather than code.
That is why we start with a paid Discovery from £3,000 rather than a quote: after it you have a written integration contract and a real estimate, and you are free to take both elsewhere.
Usually, yes — but the honest answer is that the method matters. A database replica, a nightly file drop over SFTP, or a thin service in front of the legacy application are all sound. Screen-scraping a UI is not, and we will say so rather than sell it: it breaks on the vendor's next release and takes your business process with it.
Where the system genuinely cannot be reached safely, replacing or wrapping it is enterprise work in its own right, and we would scope it as such.
It will, so the build assumes it. Contract tests run against recorded fixtures and against the live sandbox, so a breaking change shows up in CI rather than in production. Version pinning, a translation layer at the boundary and alerting on error-rate shifts mean the blast radius is one adapter rather than the whole application.
Handover names who watches the vendor's changelog. If that is us, it is a support agreement; if it is your team, they get the runbook. What does not work is nobody.
You do. Source code, designs and IP transfer to you on payment, and the work lands in your repository as it is written, not in a zip at the end. The integration is built in the language your team already runs — PHP and Laravel, Node.js, Python, Java or Go — precisely so that maintaining it does not require us.
Secrets live in your vault or your cloud's secret manager, never in the repository and never in a ticket. Access is least-privilege and time-boxed, rotation is part of handover, and logs are written so that a correlation id is enough to trace a request without a payload full of personal data sitting in them.
We sign an NDA on day one, and for regulated work the data-handling model is agreed in Discovery before any credential changes hands.
Two systems
that need to talk?
30-minute call with a senior integration engineer. Bring the vendor's documentation — we'll tell you what it leaves out, and what we would actually build if it were us.