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ENGINEERING SERVICE 02 • CONNECTIVITY & INTEROPERABILITY

Systems Integration and API Engineering

Enable seamless, secure communication between internal enterprise applications, business platforms and external third-party ecosystems.

Service Overview

Modern organisations depend on multiple specialised platforms—ERP, CRM, payment processors, voucher engines, healthcare switches and partner portals. We design and engineer secure REST APIs, API gateways, custom proxy services and middleware that unify fragmented software landscapes into a cohesive digital ecosystem.

Heartbeat’s Architectural Approach

We adopt a contract-first API engineering discipline. By introducing clean anti-corruption layers, custom proxy services and API gateways, we shield your internal domain models from external vendor volatility while enforcing strict TLS security, schema validation and idempotent retry semantics.

Business Problems Solved

  • 01.Isolated data silos requiring manual exports and imports between core business platforms.
  • 02.Brittle point-to-point integrations that fail silently when external third-party APIs change.
  • 03.Inconsistent authentication, rate limiting and payload validation across external partner interfaces.
  • 04.Difficulty exposing legacy system capabilities securely to modern web and mobile channels.

Technical Capabilities & Deliverables

REST API design & development
Enterprise API integration
API gateways & centralized routing
Custom proxy services & protocol mediation
Middleware development
Microservices integration
Third-party system integrations (payments, vouchers, CRM, ERP)
Enterprise system interoperability & secure system-to-system communication
Technologies Used
REST APIsJavaSpring BootC#.NETApache KafkaAmazon SQSDocker
Commercial & Operational Benefits
  • Real-time data synchronisation across all internal and external platforms
  • Hardened security posture across every system-to-system boundary
  • Decoupled integration architecture that simplifies future vendor changes
  • Complete auditability and observability of cross-system transactions

Discuss Systems Integration and API Engineering With Our Architects

Request a tailored consultation to scope your application, integration or modernisation requirements.

Request a Consultation
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