Compliance-first delivery
One integration layer, fewer headaches
Most companies run dozens of systems that each hold part of the truth: orders in one place, customers in another, invoices and payments somewhere else. Without proper integration, staff copy data between screens, records drift out of sync, and the scripts written to connect them fail silently at 2am — leaving duplicate orders or missing invoices to be found later.
We build an integration layer designed for failure. Systems are connected through documented APIs and webhooks, with queues or event streams decoupling producers from consumers so one slow system does not stop the others. Every integration has idempotency (so retries do not create duplicates), validation, dead-letter handling and correlation IDs that let you trace a single record across systems. Common work includes CRM and ERP synchronisation, payment gateway integration and reconciliation, e-commerce and logistics connectors, and identity provisioning. Clinical data uses the same principles through our HL7, FHIR and EDI integration practice, and new services are written by our software development team.
You end up with integrations that are observable and recoverable rather than fragile, and documentation that shows how data moves between systems. Clean, synchronised data also gives our data and analytics team a reliable base for reporting.
- REST, GraphQL, SOAP and webhook integrations
- ERP, CRM, payment and logistics connectors
- Event-driven, queue-based pipelines that decouple systems
- Idempotency, retries and dead-letter handling
- End-to-end tracing and alerting on failed records
What's Included
Everything you need, delivered by a senior, security-first team.
API Integration
Connectors to third-party and internal APIs with authentication, rate limiting and versioning.
Event Pipelines
Queues and event streams that move data reliably between producers and consumers.
Payments
Stripe and payment gateway integration, webhooks and automated reconciliation.
Data Synchronisation
Two-way sync of customers, products, orders and invoices with conflict rules.
Security
OAuth, mutual TLS, secrets management, encryption and audit trails.
Observability
Correlation IDs, dashboards and alerts so every message can be traced and replayed.
Connect your systems cleanly, once
Most organisations run dozens of applications — CRM, ERP, billing, support, marketing, internal databases and industry systems — that need to share data. Without a plan, they end up connected by fragile point-to-point scripts, CSV exports and manual re-keying. Systems integration replaces that with well-designed APIs, events and data pipelines that are secure, monitored and easy to change.
When you need an integration partner
- Staff copy data between systems by hand, causing errors and delays.
- A nightly script breaks and nobody knows until a customer complains.
- You are replacing a core system (ERP, CRM, billing) and everything connected to it must move.
- Partners or customers want an API to your platform.
- Payment, order or inventory data is inconsistent across systems.
Integration patterns compared
| Pattern | How it works | Best for | Watch for |
|---|---|---|---|
| Synchronous API (REST/GraphQL) | System A calls B and waits for a response | Real-time lookups, user-facing actions | Cascading failures if B is down |
| Webhooks | B notifies A when something changes | SaaS events (payments, form submissions) | Retries, signatures and idempotency |
| Event streaming / queues | Systems publish and subscribe to events | Decoupled, high-volume workflows | Ordering and duplicate handling |
| Batch / ELT | Scheduled bulk data transfer | Reporting, reconciliation, large datasets | Latency and partial failures |
| iPaaS (low-code) | Hosted connectors and flows | Simple SaaS-to-SaaS automations | Cost at scale, limited testing and versioning |
What we build
- API integrations with SaaS and enterprise platforms such as Salesforce, HubSpot, NetSuite, SAP, Microsoft Dynamics, Zendesk and Shopify.
- Payment integrations with Stripe, Razorpay, PayPal and others, including webhooks, refunds and reconciliation.
- Event-driven pipelines using queues and streams such as Amazon SQS/SNS/EventBridge, Azure Service Bus, Google Pub/Sub, RabbitMQ or Kafka.
- Public and partner APIs with OpenAPI specifications, authentication, rate limiting and developer documentation.
- Data synchronisation between operational systems and your warehouse — see data and analytics.
- Healthcare integrations using HL7 and FHIR — see HL7, FHIR and EDI integration.
Engineering principles
- Idempotency — retried messages never create duplicate orders or payments.
- Retries with back-off and dead-letter queues — failures are captured, not lost.
- Observability — correlation IDs, structured logs, metrics and alerts for every flow.
- Security — OAuth 2.0, scoped API keys stored in a secrets manager, signed webhooks and encryption in transit.
- Contracts — versioned schemas and OpenAPI definitions so changes do not break consumers.
Common pitfalls
- Point-to-point integrations multiplying until nobody can change anything.
- Ignoring API rate limits and pagination until volume grows.
- No reconciliation, so silent mismatches accumulate.
- Credentials hard-coded in scripts.
Deliverables
Integration architecture, source code in your repositories, deployment pipelines, monitoring dashboards, runbooks and API documentation. Integrations are built by our custom software development team and deployed with DevOps automation; AI assistants that act on your systems through these APIs are covered under chatbot development.
How We Approach an Integration
Map
Document systems, data flows, ownership and the source of truth for each entity.
Design
Choose sync or event-driven patterns, error handling and security for each flow.
Build & Test
Implement connectors and test with real data, including failure and retry cases.
Operate
Monitoring, alerting and runbooks; ongoing support as partner APIs change.
Frequently Asked Questions
Mapping which systems need to share which data and when, choosing the right pattern (API, webhook, events or batch), building and testing the integrations, and adding monitoring, error handling and documentation.
Low-code iPaaS tools are fine for simple, low-volume automations. Custom integrations suit business-critical, high-volume or complex flows that need testing, versioning, security controls and predictable cost. Many organisations use both.
Any system with an API, database, file or message interface — including CRM, ERP, billing, payments, e-commerce, helpdesk and healthcare systems, as well as legacy applications.
With idempotent processing, retries with back-off, dead-letter queues, reconciliation checks, correlation IDs and alerts, so failures are detected and recoverable rather than silent.
Individual integrations are usually fixed-price once the systems and data flows are understood. Larger programmes are phased, and ongoing support and monitoring can be a monthly retainer.
Book a free consultation. We map your systems and the data flows that matter most, then propose a prioritised integration plan.
Ready to get started with Systems & API Integration?
Book a free consultation — we'll map a secure, practical path forward.