09 — API & Integrations
EVERY SYSTEM, ONE LANGUAGE.
Reliable integration layers with retries, idempotency and observability — not fragile scripts nobody owns.
Most integrations start as a script somebody wrote in a hurry, and end as the reason two systems quietly disagree for three weeks before anyone notices. Integration is an engineering discipline, not a plumbing job.
We define contracts first, build in retries and idempotency so duplicates and outages are survivable, and instrument every call — so failures alert you instead of hiding.
- REST & GraphQL APIs
- Third-party integrations
- Payment gateways
- Webhook infrastructure
- Data synchronisation
- Legacy system bridges
- API gateways
- Developer documentation
WHAT YOU ACTUALLY GET.
Contract-First Schemas
Typed, versioned interfaces so clients never break silently when the other side changes.
Retries & Idempotency
Backoff, idempotency keys and dead-letter queues mean a five-minute outage doesn't become duplicate orders.
Secure By Design
OAuth, signed webhooks, scoped keys and rate limits so an integration never becomes an open door.
Reliable Webhooks
Delivery guarantees, replay and verification on both directions of every event-driven link.
Full Request Tracing
Every call logged and traceable end to end, with alerting on failure rates rather than silent drift.
Developer Documentation
OpenAPI specs, examples and generated SDKs so partners onboard in hours instead of weeks.
THE STACK BEHIND IT.
We choose technology for lifespan, not fashion. Hover any node to see the part it plays in this service.
IO Core
The shared engineering foundation behind every layer of this stack.
FOUR MOVES. NO GUESSWORK.
Inventory
Every system, data owner, record shape and known failure point.
Contract
Schemas, auth model, error semantics and versioning policy.
Implement
A sync layer built with resilience and observability from the start.
Operate
Monitoring, alerting and versioned evolution as the systems change.
- No more manual re-keying
- Fewer silent failures
- Faster partner onboarding
- Clean data across systems
- ERP ↔ e-commerce sync
- Payment & billing
- Partner APIs
- Legacy modernisation
SEVEN STAGES. NO SURPRISES.
- 01
Discover
Business goals, constraints, users and the real workflow.
- 02
Strategize
Scope, architecture, sequencing and success metrics.
- 03
Design
Flows, interface systems and interaction language.
- 04
Build
Vertical slices shipped continuously, reviewed weekly.
- 05
Test
Automated tests, device matrix, load and security passes.
- 06
Launch
Staged rollout, monitoring and rollback ready.
- 07
Scale
Iterate on evidence, harden, extend, support.
Delivery roadmap
READY TO BUILD WHAT'S NEXT?
Tell us what you're building. We'll help turn the idea into a digital product that works.