Challenge Group

Services · API gateway, enterprise integration, design & governance

Integration & API Services. Connect everything, securely.

Modern platforms don't operate in isolation. We connect legacy and modern systems through robust, well-documented integration layers and APIs that let data flow securely and reliably across the enterprise.

Trusted by 35+ leading organisations across the region

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Capabilities

What we do

Every capability is delivered by the same engineers who designed it — no hand-offs, no gaps.

API design & governance

REST and GraphQL APIs to OpenAPI standards, with versioning policies and a published developer portal.

API gateway management

Kong (or equivalent) for centralised authentication, rate limiting, routing, and usage analytics.

Enterprise system integration

Connecting ERP, HR, finance, and CRM via standard protocols (REST, SOAP, SFTP) and custom adapters.

Government platform connectivity

Adapters for national identity, tax-authority registries, payment gateways, and e-signature platforms.

Event-driven architecture

Asynchronous messaging (RabbitMQ, Redis Streams) with retry and dead-letter handling, so failures never block users.

Integration monitoring

End-to-end transaction tracing, SLA dashboards, and automated alerting on anomalies.

Overview

Most enterprise outages traceable to "integration" aren't really about integration — they're about brittle point-to-point connections, undocumented contracts, and the lack of a place to see what's actually happening when something fails. We design integration layers that make those failure modes visible and survivable.

Our work covers the full integration stack: API design and governance up front, a central API gateway for authentication and observability, and asynchronous messaging where reliability matters more than instant response. Every API is documented to OpenAPI, versioned, and visible to internal developers through a published portal.

Government platform connectivity is a specialism — national identity, tax-authority registries, payment gateways, and e-signature platforms are designed in as first-class citizens of the architecture, with the audit and resilience that those connections demand.

How we approach it

A repeatable shape, tuned to your work.

Every engagement follows the same disciplined shape — adjusted for scope, urgency, and the constraints we find on the ground.

  1. 01

    Map the contracts

    Inventory current integrations, document the implicit contracts, and identify the brittle ones.

  2. 02

    Design

    API contracts to OpenAPI, gateway topology, identity model, and async patterns where reliability matters.

  3. 03

    Build

    Implement the gateway, adapters, and event flows — with monitoring and alerting designed in, not bolted on.

  4. 04

    Govern

    Versioning policy, deprecation paths, and a developer portal so internal teams can self-serve without breaking things.

  5. 05

    Observe

    End-to-end tracing, SLA dashboards, and runbooks that turn outages into known operations.

Where it fits

Real shapes of work — not abstract use cases.

Patterns we deliver regularly, drawn from real engagements across the region.

Public Sector

Citizen-portal back-end fabric

A national portal sits on a Kong-managed API gateway routing to government-platform adapters for identity, tax, payments, and e-signature — with audit logging by default.

Financial Services

Open-banking-style API layer

A bank publishes a governed external API surface with rate limiting, scopes, and a developer portal — ready for partners and regulators.

Enterprise

Event-driven systems integration

Order, fulfilment, and finance systems integrated via durable event streams with retry and dead-letter handling — so a downstream failure doesn't block the customer.

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What you get

The outcomes worth paying for.

Reliable by design

Async patterns, retries, and dead-letter handling — so downstream failures don't propagate to users.

Visible from end to end

Tracing and SLA dashboards turn integration from a black box into an operable surface.

Governed without slowing teams

Versioning policies and a developer portal let teams self-serve safely.

Government-ready

First-class adapters for the national platforms your services depend on.

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APIs published & governed

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Integrations delivered

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Gateway availability

Technology

REST & GraphQL
OpenAPI
Kong Gateway
RabbitMQ / Redis
OAuth / OIDC

Frequently asked

Questions buyers actually ask.

Let's talk

Bring us your most tangled problem.

No decks, no pitches — just a brief call to understand what you're building, and how we'd resolve it.