Systems integration services · EonTech

Make your whole stack
behave as one system.

We connect the SaaS tools, legacy systems, and data stores you already run — with APIs, middleware, and event-driven flows that are resilient by design. Built to survive change, observable in production, and yours to own.

Connect your systems Explore services
  • APIs · iPaaS · event-driven
  • Senior teams · your time zone
  • GDPR · ISO 27001
One stack
SaaS, legacy, and data systems working as a single whole
Event-driven
Loosely coupled integrations that survive change
Your IP
The connectors and middleware are yours to run

What we connect

From SaaS to legacy to your data

Most stacks are a patchwork of tools that don't talk. We bridge the modern and the old, the bought and the built, so data moves automatically and your teams stop being the integration.

  • SaaS-to-SaaS

    Connect the tools your teams already live in — CRM, billing, support, marketing — so data flows automatically instead of through copy-paste and CSV exports.

  • Legacy bridges

    Wrap older systems that have no modern API in clean adapters, exposing what they hold without a rip-and-replace you can't afford yet.

  • Data synchronisation

    Keep records consistent across systems with clear ownership of the source of truth, conflict rules, and reconciliation you can audit.

  • iPaaS & middleware

    Where an integration platform fits, we configure and extend it; where it doesn't, we build lean custom middleware you fully control.

  • Event-driven backbones

    A message or event backbone so systems react to changes instead of polling — loosely coupled, so one system's outage doesn't topple the rest.

  • Partner & B2B

    Integrations out to customers and partners — APIs, webhooks, and file exchanges — with versioning and contracts that don't break on every change.

How we deliver

Map it, pattern it, make it resilient

Integration goes wrong when it's improvised flow by flow. We start from a map of what every system owns, choose a pattern deliberately, and build for the failures the real world guarantees.

  1. 01

    Map the systems and the flows

    We document what each system owns, what it exposes, and how data needs to move. The integration map is the contract everything else is built against.

  2. 02

    Choose the right pattern

    Point-to-point, middleware, or event-driven — we pick per flow based on coupling, volume, and how often it changes, not on a single house style.

  3. 03

    Build resilient connectors

    Integrations fail in the real world; ours expect it. Retries, idempotency, dead-letter handling, and clear ownership of the source of truth are built in.

  4. 04

    Observe and operate

    Every flow is monitored, with alerting and traceability when something stalls. You see where a record is, not just that it vanished.

Built to last

Integrations break in the real world — ours expect it

A demo integration works on a sunny day. A production one survives a timed-out third party, a duplicated message, and a downstream system that's down for maintenance. We engineer for the second case.

Idempotent operations, loose coupling, versioned contracts, and full observability mean a hiccup pauses a flow instead of losing your data — and you can trace exactly where a record is.

See our API development practice

Why EonTech

A partner who untangles instead of adding to the tangle

  • Pattern over dogma

    We choose point-to-point, middleware, or events per flow — whatever keeps the system simple and resilient, not what fits one product.

  • Built to fail well

    Real integrations break. Ours retry safely, isolate faults, and tell you where a record is — so a glitch isn't a data loss.

  • Senior only

    Integration engineers who have untangled tangled stacks before — the people who map it are the ones who wire it.

  • You own the glue

    Connectors, middleware, and contracts are delivered as code in your control, with no dependency on us to keep them running.

What ships with every integration

The things that keep it working after we leave

An integration is only as good as how it behaves a year later. When the connectors need to grow into new features, that's where our custom software development picks up.

  • A documented integration map you keep, not tribal knowledge in one head
  • Resilient flows with retries, idempotency, and dead-letter handling
  • Clear ownership of the source of truth for every shared record
  • Monitoring and alerting so a stalled flow is seen, not discovered late
  • Versioned API and event contracts that don't break downstream consumers
  • Connectors and middleware delivered as code you own and can extend

Common questions

What teams ask before integrating

  • Can you integrate a legacy system with no modern API?

    Yes. We wrap older systems in clean adapters — over their database, files, message queues, or whatever interface exists — and expose a modern, contract-defined surface. That lets you connect it now without committing to a full replacement before you're ready.

  • Do we need an integration platform, or custom code?

    It depends on the flows. Where an iPaaS or middleware platform genuinely fits, we configure and extend it. Where it adds cost and lock-in without paying for itself, we build lean custom middleware. We recommend based on your stack, not on what we'd prefer to sell.

  • How do you stop one system's outage from breaking everything?

    By favouring loose coupling — event-driven flows, queues, idempotent operations, and dead-letter handling — so a downstream system going offline pauses a flow rather than cascading a failure. Combined with monitoring, you see and recover from incidents instead of hunting lost data.

Stop being the integration between your tools

Tell us the systems that don't talk and the data your teams move by hand. We will map the flows, choose the right patterns, and scope a resilient integration with a fixed first milestone.

Connect your systems See API development