Integration

Custom System Integration Services
so your custom system stops standing alone.

Custom system integration services Australia wide and bespoke integration services for businesses running custom-built software, or an off-the-shelf tool customised past recognition. No API, no documentation, no vendor who will help, and we still connect it.

We build the integration layer ourselves and wire it to Xero, MYOB, HubSpot, Salesforce and whatever else the business runs on. Perth-based, Australia-wide, and we take on the work others will not.

  • AU-wide Perth-based · servicing Australia
  • 18+ yrs Building custom software
  • Legacy Legacy system specialists
  • Fixed Price scopes, no surprises
Australian owned and operated

Built here. Your data stays here.

  • No offshore development. Everything is written by our own team in Australia. Nothing is subcontracted overseas.
  • Your data stays onshore. Hosted in Australia, on infrastructure you own, under Australian law.
  • Every state, not just ours. Perth, Melbourne, Sydney, Brisbane, Adelaide and everywhere between.
Connected Stack

Connect the system you built to the tools you bought

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.

What an integration actually is

Your custom system holds half the picture

Every system in the business is good at its own job and blind to the others. The cost is not the software, it is the person moving information between them and the fact that no two systems ever quite agree.

What you already run

What we build

One integration layer

Runs on a schedule, maps your codes to theirs, handles the records that exist in both places, and keeps a log of every sync so a mismatch can be traced instead of argued about.

Get a fixed-price scope

What you get

  • Records move between systems without anyone retyping them
  • One agreed version of the customer, the job and the invoice
  • Failures raise an alert instead of failing quietly
What We Build

Get data in and out of the system you had built

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.

Custom API development for legacy systems

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.

Custom system to cloud platform sync

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.

Integration middleware and message bus

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.

Data liberation from locked-in systems

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.

Gradual system modernisation

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.

Ongoing legacy system support

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.

Capabilities catalogue

Everything we do with custom & in-house systems

Every capability below has been delivered for a real Australian business, from connecting a one-off bespoke ERP to Xero, through to full legacy modernisation projects spanning PHP, .NET and Java systems. If your scenario is not listed, ask, we build bespoke.

Custom system ↔ Xero / MYOB integrations

Custom system ↔ CRM (HubSpot, Salesforce)

Legacy custom-system modernisation (PHP, .NET, Java)

Custom API & webhook build

  • Custom API development on top of legacy databases
  • REST API exposed over an existing custom system
  • GraphQL API for flexible front-end and partner queries
  • Webhook delivery from the custom system to other platforms
  • OAuth, API key auth and field-level permissions
  • Swagger / OpenAPI documentation generation
  • Versioning, deprecation and partner-developer portal

Custom system ↔ Power BI reporting

  • Power BI on a custom system with star-schema modelling
  • Live data feeds from custom system to Power BI / Looker / Metabase
  • Daily and monthly management dashboards on top of custom data
  • Cross-system reporting joining custom system + accounting + CRM
  • Bespoke dashboards for niche custom-system KPIs

Custom system migrations to cloud

  • On-premise custom systems lift-and-shifted to Azure / AWS / GCP
  • Database migration services from on-prem to cloud
  • Custom system replatformed onto a managed database / container stack
  • Phased cloud cutover with parallel-run validation
  • Disaster-recovery, backup and security uplift during migration
  • AWS / Azure cloud architecture for custom systems
Pricing

How we quote work on a custom system

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.

Free discovery call

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.

Fixed-price quote

After reviewing the system architecture and data model, we quote a fixed price for the integration or API build. No hourly creep.

Ongoing support

Monthly plans for integration monitoring, legacy system maintenance and evolution. Your systems looked after properly.

Why HELLO PEOPLE

Connector tools or a build
made for your system

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 / Maken8n / Self-hostedMuleSoft / Boomi
Setup for your custom system We reverse-engineer, map, connect No app exists for itYou build every node yourselfWeeks of enterprise onboarding
Your workflow across systems flow Every step, every edge case handled Basic triggers if any existPowerful, you build each stepPowerful, priced accordingly
AU business compliance fit AU-native, GST + Privacy Act rules Generic, misses AU quirksGeneric, you code the rulesGeneric, needs configuration
Ongoing cost One-off + optional support plan Per-operation, foreverSelf-hosted infra + upkeepEnterprise licence
When your systems evolve We patch, no extra charge Broken sync until you fix itYou update the flow yourselfSupport-ticket queue
Direct access to the builder Email Kasun, get Kasun Chat support tierCommunity forumEnterprise support tier
Your data and system ownership You own it, nothing sits with us Vendor holds middlewareYou own it (self-hosted)Vendor holds middleware
Case Study

Legacy Access database replaced with a multi-user cloud web app

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 study
20yr Of historical data migrated cleanly
0 Days of operational downtime
12wk From discovery to cutover
4x More concurrent users supported

We 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.

General Manager Manufacturing company · Perth
How It Works

How your custom system gets connected, step by step

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.

  1. System Discovery

    We review the system architecture, database schema, business rules, integrations (if any) and technology stack. We document what exists, often for the first time.

  2. Data Mapping

    Mapping entities in your custom system to entities in the target platforms. Customer = Contact. Order = Invoice. Product = Item. Translation rules documented and validated.

  3. Architecture

    Designing the integration approach: direct API, middleware, event-driven, database-level or file-based. Matched to the system's capabilities and your reliability requirements.

  4. Build

    Integration layer built with proper error handling, retry logic, monitoring and logging. API endpoints documented. Sync rules implemented and tested against real data.

  5. Testing & Validation

    End-to-end testing with real data. Every entity, every edge case, every error scenario. Data integrity validated between systems. Performance under realistic load confirmed.

  6. Go-Live & Monitoring

    Live with full monitoring. Sync dashboards, error alerting and performance tracking. Parallel running where needed. Your team trained on the new workflow.

How it runs today

Your system works, joining it to the rest does not

  • The same information is entered in more than one place
  • Two systems hold the same record and disagree about it
  • Reporting means exporting from each and joining them by hand
  • When a sync breaks, nobody finds out until something looks wrong

After

The systems agree without anyone in the middle

  • Entered once, it appears everywhere it is needed
  • One agreed record, matched on rules you set
  • Reporting from one source instead of several exports
  • Errors raise an alert with the record attached

Scoped and quoted before you commit. You own the code and the credentials at the end of it.

Get a fixed-price scope
FAQs

What owners ask about connecting a custom system

What do custom system integration services australia usually cover?

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.

Our system has no API. Can you still deliver a custom software integration australia project?

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.

We do not have the source code. Is that a problem for bespoke integration services?

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.

How much do custom system integration services australia cost?

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.

Can you also support and maintain our legacy system as part of business system integration services?

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.

Should we just replace the system instead of doing legacy system integration services?

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.

What if our system is on very old technology?

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.

How long does a bespoke integration services build take?

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.

Tell us about your system

What does it do, what is it built on, and what cloud tools does it need to connect to? Share the details and we will come back with a clear scope and fixed price for your custom system integration services australia project.

Prefer a quick chat? Call 0425 531 127. We answer the phone in Perth.