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“The best way to predict the future is to invent it.”

— Alan Kay

© 2026 ELASYN Pty Ltd. All rights reserved.

API & integrations

Connect Systems That Were Never Designed to Talk

We build the APIs, middleware, and data pipelines that connect your CRM to your accounting software, your warehouse system to your e-commerce platform, and every other system boundary where data gets stuck.

Map your integration needs
The challenge

Your data is trapped in silos

The average mid-size business runs 40–70 different software applications. Most of them don’t share data natively. So your team becomes the integration layer, manually exporting CSVs, re-keying data, cross-referencing spreadsheets, and maintaining the fragile connectors someone built three years ago. The cost compounds. Orders entered in your e-commerce platform don’t automatically update inventory. Customer records in your CRM don’t match your billing system. Support tickets have no context about the customer’s order history. Every manual handoff is a delay and a potential error. Real integration means your systems share data automatically, in real time, with validation and error handling.

Customer data exists in five systems and matches in none of them

Your team exports and imports CSVs between systems on a daily schedule

A system integration built years ago breaks regularly and nobody understands it

New tools can’t be adopted because they don’t connect to your existing stack

Order, inventory, and billing data are always slightly out of sync

What we deliver

What we deliver

Production-grade integrations with error handling, retry logic, monitoring, and documentation. We build connections that survive API changes, network issues, and data edge cases.

REST & GraphQL API design and implementationThird-party system integrationsReal-time data synchronisationWebhook infrastructureAPI gateway configurationData transformation middlewareLegacy system adaptersAPI documentation & developer portals
Capabilities

Integration capabilities

API design & development

Versioned REST and GraphQL APIs with OpenAPI specifications, authentication, rate limiting, and pagination. APIs that external developers and internal teams can adopt without a phone call.

Third-party integrations

Stripe, Xero, MYOB, Shopify, Salesforce, HubSpot, and hundreds of other platforms. We handle the authentication flows, data mapping, rate limits, and error handling for each.

Real-time sync

WebSocket connections, server-sent events, and webhook-driven updates that keep systems synchronised in real time. Conflict resolution and eventual consistency for distributed data.

Data transformation

Middleware that translates between different data formats, schemas, and conventions. Map fields, convert units, handle timezone differences, and normalise inconsistent data.

API gateway & management

Centralised API routing, authentication, rate limiting, and analytics. One entry point for all your APIs with consistent security and monitoring.

Legacy system integration

Adapters for systems with SOAP APIs, flat file exports, FTP-based transfers, or database-level integration. We connect modern systems to legacy infrastructure without replacing what works.

Webhook infrastructure

Reliable webhook delivery with signature verification, retry policies, dead-letter queues, and delivery status tracking. Both consuming external webhooks and producing them for your clients.

Testing & documentation

Contract testing between services, integration test suites, and auto-generated API documentation. Changes to one system don’t silently break another.

How we work

How we build integrations

1

System audit & data mapping

We catalogue your systems, map data flows between them, identify manual touchpoints, and design the integration architecture. Every data field gets a source of truth.

2

Build & connect

API development, middleware implementation, and third-party connector setup. Each integration is built with error handling, retry logic, and monitoring from day one.

3

Validate & monitor

End-to-end testing with production-like data, monitoring dashboards for every integration, and alerting on failures. Documentation and runbooks for your team.

Use cases

Integrations we’ve built

E-commerce to ERP sync

Real-time order sync between Shopify and a custom ERP. Orders, inventory levels, pricing, and customer records synchronised bidirectionally with conflict resolution.

Multi-platform payment reconciliation

Automated reconciliation of payments from Stripe, PayPal, and direct bank transfers against invoices in Xero. Daily reconciliation reduced from 3 hours to 5 minutes.

CRM and support desk integration

Connected Salesforce with Zendesk so support agents see full customer history, purchase records, and account status without switching tools.

Logistics API for multi-carrier shipping

Unified API across Australia Post, StarTrack, and TNT. Rate comparison, label generation, tracking updates, and delivery notifications through a single interface.

Healthcare data exchange

HL7 FHIR-compliant API for exchanging patient records between a clinic management system and pathology providers, meeting Australian healthcare interoperability standards.

Tech stack

Integration technology stack

API frameworks

FastAPIExpressNestJSDjango REST Framework

API standards

RESTGraphQLgRPCOpenAPI/SwaggerWebSockets

Messaging

RabbitMQAmazon SQS/SNSRedis Pub/SubApache Kafka

Platforms

StripeXeroShopifySalesforceHubSpotMYOB

Gateway

KongAWS API GatewayCloudflare Workers

Monitoring

DatadogGrafanaSentryPagerDuty
Results

What changes for your business

Data flows automatically between systems

No more CSV exports, manual re-entry, or "Can you check if this updated?" Your systems stay synchronised without human intervention.

A single source of truth for every record

Customer records, order data, inventory levels: each has one authoritative source. Every other system reads from it.

New tools adopt in days, not months

A well-designed integration layer means adding a new tool is connecting it to your APIs, not rebuilding data flows from scratch.

Visibility into every data flow

Monitoring dashboards show exactly what data moved where, when, and whether it succeeded. Integration failures are caught in minutes.

See how we've delivered for other clients.

Real projects with measurable outcomes, not hypothetical scenarios.

View case studies

Systems not talking to each other?

We’ll map your integration landscape, identify the manual handoffs costing your team time, and build connections that work reliably.

Map your integration needs
ELASYN

Software and cloud engineering for Australian businesses. Based in Brisbane, serving nationally.

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