Custom system integration services australia and bespoke integration services for businesses running custom-built software or heavily customised off-the-shelf tools. No API, no vendor help, no problem. We build the integration layer and connect it to Xero, MYOB, HubSpot, Salesforce and everything else.
Perth-based. Australia-wide. We specialise in systems others will not touch.
The cloud platforms Australian businesses most often ask us to connect their bespoke ERP, CRM or job management system to. Click any platform to see its dedicated integration page.
Three stages. No surprises. Your live legacy system stays untouched until cutover, and every custom api integration company build is delivered personally by the founder.
Week 0
15-minute scoping call. We map your custom system setup, the systems you need it connected to (or migrated to), and the specific workflow gaps. Fixed-price quote inside 48 hours.
Weeks 1–N
Integration built in a sandbox and parallel-run against your live custom system for two weeks. Old system stays in place. Every record mapping, field translation and validation rule verified before production. No risk to live data.
Cutover
Production cutover on a planned window — typically a weekend. Team training, monitoring active, 30 days post-launch support. Documentation and source code handed over in full.
Custom API builds, cloud sync, middleware, data extraction and gradual modernisation. Our bespoke integration services and legacy system integration services cover each one differently. Pick a tab to see how each build actually runs.
We reverse-engineer your system's database, understand the business rules and build a secure REST API on top. Authentication, rate limiting, field-level access control and documentation included.
Works even when the vendor provides no API. We work at the database level, respecting the application's data integrity rules.
Your custom ERP or CRM syncing with Xero, MYOB, Salesforce, HubSpot, Shopify or any cloud platform. Bidirectional where needed — changes in either system flow to the other.
We handle the complexity: data mapping between different schemas, conflict resolution for bidirectional sync, and error handling for records that don't match.
For complex environments with multiple systems that all need to share data. We build a central middleware layer that routes data between systems, transforms formats, handles errors and provides a single monitoring dashboard.
Event-driven architecture. Systems publish events. Subscribers receive what they need. New systems plug in without changing existing ones.
Your data, out of the system, into a format you own. Regular exports to your data warehouse, reporting database or cloud storage. You're no longer dependent on the vendor for access to your own data.
Automated, scheduled, with full audit trails. Historical data extracted and ongoing changes captured incrementally.
Replace one module at a time. Keep the custom system running for what it does well. Build modern replacements for the parts that are holding you back. The integration layer bridges old and new.
Strangler fig pattern — modern modules gradually take over functionality from the legacy system. No big-bang migration risk.
Bug fixes, performance tuning, small enhancements and security patches for your custom system. We become the support team that the original developer isn't available to be.
We learn the system, document it, stabilise it and keep it running while you plan the long-term strategy.
Every custom system is different. Price moves with tech stack, database access, target systems and whether the scope is a single custom software integration australia connector or a full business system integration services rebuild. We scope after discovery, never before.
Tell us about the system: what it does, what it's built on, what needs to connect. We'll assess complexity and give you a realistic range.
After reviewing the system architecture and data model, we quote a fixed price for the integration or API build. No hourly creep.
Monthly plans for integration monitoring, legacy system maintenance and evolution. Your systems looked after properly.
Why HELLO PEOPLE
Zapier, n8n and enterprise iPaaS assume a well-behaved API. When there isn't one, this is how we compare on the things that actually matter.
| Concern | HELLO PEOPLE | Zapier / Make | n8n / Self-hosted | MuleSoft / Boomi |
|---|---|---|---|---|
| Setup for your custom system | We reverse-engineer, map, connect | No app exists for it | You build every node yourself | Weeks of enterprise onboarding |
| Your workflow across systems flow | Every step, every edge case handled | Basic triggers if any exist | Powerful, you build each step | Powerful, priced accordingly |
| AU business compliance fit | AU-native, GST + Privacy Act rules | Generic, misses AU quirks | Generic, you code the rules | Generic, needs configuration |
| Ongoing cost | One-off + optional support plan | Per-operation, forever | Self-hosted infra + upkeep | Enterprise licence |
| When your systems evolve | We patch, no extra charge | Broken sync until you fix it | You update the flow yourself | Support-ticket queue |
| Direct access to the builder | Email Kasun, get Kasun | Chat support tier | Community forum | Enterprise support tier |
| Your data and system ownership | You own it, nothing sits with us | Vendor holds middleware | You own it (self-hosted) | Vendor holds middleware |
A wholesaler running its operations on a fragile Microsoft Access database — single-user lockouts, occasional corruption, no remote access — was migrated to a modern web app on a proper database. All historical data preserved, forms and reports reproduced, and the workflow extended to mobile crews.
Read the full case studyWe had a custom ERP built fifteen years ago. No API, no documentation, the original developer had retired. HELLO PEOPLE reverse-engineered the database, built a REST API on top and connected it to Xero and our new HubSpot instance. We didn't have to replace the ERP. It just works with everything now.
Six steps, the same shape every time. System discovery, data mapping, architecture decision, build, end-to-end testing with real data, then go-live with monitoring. Every custom system is different, so the process adapts inside each step.
Connecting your bespoke or heavily-customised software to the rest of your stack: Xero, MYOB, HubSpot, Salesforce, Shopify, NetSuite or your own operational tools. Includes custom api integration company work, middleware, data extraction and gradual modernisation. Perth-based, delivered Australia-wide.
Yes. We work at the database level, reading and writing directly using the system's data model and business rules. File-based integration also works where the system exports on schedule. Where it makes sense we build a proper REST or GraphQL API on top so future integrations are easier.
Not necessarily. Database-level and file-level integration usually covers what is needed, no source required. If we need to change application logic, source helps, but for most bespoke integration services scopes we can deliver without it.
It depends on the systems involved, the data volume and the exception cases. You get a fixed-price quote after a 15-minute scoping call. No hourly billing, no scope creep once we start.
Yes. If the original developer or vendor is gone, we take over support: bug fixes, performance tuning, security patches, small enhancements. We learn the system, document it, and keep it stable while integration and modernisation runs in parallel.
Sometimes, yes. Often the system does 80 percent of what you need and a rebuild is a massive risk. Legacy system integration services let you keep the 80 percent and fill the gaps with modern tools. We give you an honest assessment of which path makes more sense.
We have worked with .NET Framework, classic ASP, FoxPro, Progress 4GL, Delphi, VB6, Access and systems built on tech most developers have not heard of. The database is usually more accessible than the application, and that is where integration happens.
A single-system sync runs 6 to 10 weeks. API layer builds run 8 to 14 weeks. Full middleware environments run 12 to 20 weeks. We scope precisely after the discovery phase because custom systems vary widely in complexity.
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Prefer a quick chat? Call 0425 531 127. We answer the phone in Perth.
