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Connected Systems

Heritage System API Layer

A modern REST layer in front of older SOAP, XML or mainframe platforms, letting new products integrate cleanly without taking on their constraints.

  • 20 working days
  • Scope published below
  • GST included
  • Ref. CZ-IN-105

Overview

Some systems at the heart of your business are here to stay, whether core banking, insurance administration or a government platform still using SOAP and fixed-width files. We put a translating gateway ahead of them that converts protocols, renames cryptic fields into something readable, and adds caching and circuit breakers so a slow backend cannot take your website down with it. Your developers work with a clean REST interface instead of old quirks. On the day that platform is retired, you update the gateway alone rather than every app.

What you receive

  1. Gateway turning REST requests into SOAP calls, XML messages or fixed-width records
  2. A machine-readable spec listing as many as 25 published operations
  3. Response caching with freshness settings you can tune for each operation
  4. Timeouts and circuit breakers so a slow backend stays isolated
  5. Request and response logs with personal and sensitive fields masked
  6. Cryptic backend error codes mapped to clear, actionable messages
  7. Load test report run at your expected traffic volume

How it runs

  1. Step - 01

    Investigation

    We document how the old interface really behaves, including anything never written down.

  2. Step - 02

    Mapping

    Each REST resource is matched to a backend call and every error listed.

  3. Step - 03

    Build

    We implement the gateway with caching, retries, logging and monitoring built in.

  4. Step - 04

    Verification

    Load testing and a parallel run happen before your apps move across.

Timeline: 20 working days, counted from the day we receive what we need from you.

Is it a fit?

A good match for

  • Businesses building new apps on top of systems they must keep
  • Developers rebuilding the same old integration for each new project
  • Customer-facing products slowed by an ageing backend

What we need from you

  • Access to the old system itself, or to a faithful test copy
  • Any surviving documents, even outdated or partial ones
  • Someone who knows the system's oddities, even if they have since left

Why it helps

  • You pay for the integration once, not again on each project
  • Backend slowness or outages stay contained instead of rippling outward
  • A tidy boundary ready for the day that system is retired

Questions

That happens often. We learn its behaviour by capturing traffic and testing responses, and the documentation we produce along the way is handed over as part of the work.

It adds a tiny overhead per call, and caching frequently saves more time than that. The load test report shows you the actual numbers for your traffic.

Yes. It is packaged as a container, so it can run on-premises beside the old system or in whichever hosting you choose.

Pairs well with

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Tell us what you are building. We will point you to the right first step.