Staff copying data between systems manually
Someone on your team exports from one system, reformats it, and imports into another. Every day. Invoices, contacts, orders, timesheets: all moving between platforms by hand.
Service
API Development & Integration Sydney
Custom APIs and system integration for Sydney businesses.
Sydney API developers for businesses tired of double entry, fragile connectors and reporting lag. We build custom APIs and system integrations that keep data moving properly.
API development Sydney businesses can rely on: REST APIs, middleware, webhooks and API integration Sydney teams can run across accounting, CRM, e-commerce and operations platforms with fixed pricing and clear scope.
- AU-team API development team
- 18+ yrs Building APIs & integrations
- 40+ Platforms integrated
- Fixed Price scopes, no surprises
API Developers Sydney
API Development for Sydney Businesses That Need Reliable Data Flow
In Sydney, manual re-entry and patchwork integrations become expensive quickly. Staff burn time fixing sync issues, finance works from stale data and customer-facing teams lose speed.
We build API development Sydney businesses can use to remove that drag: REST APIs for apps and portals, API integration Sydney teams can trust between finance, CRM and operations tools, and middleware that handles the messy business rules in between.
You get senior API developers, commercial thinking and a fixed-price scope before the build starts. That means less ambiguity, cleaner systems and faster decisions.
Sound Familiar?
Problems Sydney businesses bring to us
These are the conversations we have every week.
Zapier and off-the-shelf connectors keep breaking
You tried the plug-and-play tools. They worked for simple stuff but cannot handle your specific data mapping, business rules, or the volume you need. When they fail, nobody knows until data is missing.
Need an API for your app but don't have a backend team
You have a mobile app idea or a web portal that needs a backend. User auth, data sync, payment processing: you need a proper REST API but do not have API developers on staff.
API Development Sydney
Show us where data is failing the workflow
Tell us which systems are involved, what should sync automatically and what is still manual. We will come back with the right integration path and fixed-price scope.
What We Build
API development and integration services for Sydney businesses
Custom APIs, system integrations, webhooks, middleware and payment connections.
Custom REST API development
We build RESTful APIs in Laravel, Node.js, .NET and Python. Clean resource-based endpoints, proper HTTP methods, consistent error responses, pagination, filtering and sorting.
Your mobile apps, React frontends, partner systems and internal tools all consume the same API. One backend, many consumers.
Authentication with JWT, API keys or OAuth 2.0. Rate limiting, input validation, CORS. OpenAPI/Swagger documentation included.
Third-party system integration
Connecting your business systems so data flows automatically. CRM to accounting. E-commerce to inventory. Website to ERP. Job management to payroll.
Xero, MYOB, Salesforce, HubSpot, Shopify, WooCommerce, Square, Stripe, simPRO, ServiceM8, Australia Post: we have built integrations for all of them.
Real-time sync via webhooks. Scheduled batch sync for systems without webhook support. Queue-based processing for high volumes. Error recovery and retry logic on every connection.
Webhook development and event-driven integrations
Real-time data flow between systems. When an invoice is created in Xero, your CRM updates. When a Shopify order comes in, your warehouse system queues it. When a form is submitted, your sales pipeline triggers.
We build webhook listeners that validate payloads, process data, handle retries and log everything. Reliable event-driven architecture, not fragile point-to-point scripts.
For systems that do not support webhooks natively, we build polling services with change detection.
API middleware and data transformation
When System A speaks a different language to System B, you need middleware. We build the translation layer: mapping fields, converting formats, applying business rules, enriching data.
Common scenario: your job management software needs data from your accounting system, but the data shapes are completely different. Our middleware handles the transformation so both systems stay clean.
Handles data validation, field mapping, format conversion (JSON, XML, CSV, EDI), and business logic in one manageable layer.
Payment gateway and financial integrations
Stripe, Square, PayWay, B2Bpay, Tyro, Windcave: we build payment integrations that process transactions securely and reconcile with your accounting software.
Invoice payment links, subscription billing, split payments, refund automation. Connected to your MYOB or Xero so every transaction reconciles automatically.
PCI compliance, tokenisation, and secure credential management built into every payment integration.
Case Study
Connecting Shopify, Xero and a warehouse system — automating order fulfilment
A Sydney e-commerce business was manually processing orders from Shopify, creating invoices in Xero, and updating their warehouse system separately. We built API integrations that sync orders, inventory and invoices automatically across all three platforms.
Read the full case study 20hrs Saved per week
3 Systems connected
0 Manual order processing
Orders used to take three systems and two people to process. HELLO PEOPLE connected Shopify, Xero and our warehouse platform with APIs — now orders flow through automatically. We handle three times the volume with the same team.
Why Choose Us
What you get from Australian API developers
Australian team, platforms we already know, fixed-price quotes, and integrations that run reliably.
Australian API developers who understand Sydney businesses
We are an Australian software company. When your API project needs fast iteration (data formats, edge cases, business rule changes), you deal with our team directly. No offshore relay.
Sydney moves fast. API integration projects need responsive communication and quick turnaround. You get that with us.
Built around the platforms Sydney businesses use
Xero, MYOB, Salesforce, HubSpot, Shopify, simPRO, ServiceM8, SharePoint: we have built integrations for most platforms Australian businesses rely on. We know their APIs, rate limits, and quirks.
Your API integration connects your actual systems with proper error handling, retry logic and monitoring. Not a prototype that falls over the first time a rate limit hits.
APIs designed for your business, not forced from a template
When off-the-shelf connectors do not fit, we build custom REST APIs from scratch. Clean endpoint design, proper authentication, versioning, documentation.
Your mobile app, web portal, partner systems and internal tools all consume the same reliable API. One source of truth, multiple consumers.
Integrations that run without you thinking about them
API integrations fail silently when built poorly. Ours include monitoring, alerting, error logging and automatic retries. If something breaks, we know before you do.
Queue-based processing for high-volume data. Webhook listeners that handle bursts. Scheduled sync for systems without real-time support. Built to run reliably at scale.
Your business data stays protected
Every API we build uses proper authentication (OAuth 2.0, API keys, JWT tokens) depending on the use case. Data encrypted in transit and at rest. Access controls and audit logging built in.
For Sydney businesses handling sensitive financial or customer data, we follow Australian data residency requirements and deploy within your infrastructure when needed.
How It Works
How We Build Your API Integration
Every project follows this structure. The scope adapts, the discipline stays.
Why us
Why Sydney Businesses Choose HELLO PEOPLE for API Development
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Australian team
Same timezone, direct communication, Australian support. We are a local company, not offshore behind an Australian phone number.
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We know the platforms
Xero, MYOB, Salesforce, HubSpot, Shopify, simPRO, ServiceM8, Square, Stripe: we have built integrations for all of them. We know their APIs and their limitations.
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Fixed-price quotes
Every project is scoped and quoted before we start. No hourly billing that creeps upward. You know exactly what you are paying.
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18+ years experience
Building APIs and integrations for Australian businesses since 2007. We have seen every integration pattern and most of the edge cases that break them.
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Monitoring included
Every integration includes error logging, alerting and automated retries. If something breaks, we know before you do.
FAQs
Common questions about API development and integration in Sydney
What types of API development do you offer for Sydney businesses?
Custom REST API development, third-party system integration (Xero, MYOB, Salesforce, Shopify, etc.), webhook development, API middleware, payment gateway integration, and legacy system data migration. We build in Laravel, Node.js, .NET and Python.
How do you scope and price an API or integration project?
We start with a free scoping call to map the systems involved, the direction of data flow and the exception cases, then provide a fixed-price quote before any work begins. A single SaaS-to-SaaS integration sits at the lower end of project size. A custom REST API for a mobile app or web portal, or a multi-system integration hub, is larger. No hourly billing — you know the full cost upfront.
Can you integrate our existing software with Xero or MYOB?
Yes. Accounting integrations are one of our most common projects. We connect Xero and MYOB to CRMs, job management tools, e-commerce platforms, custom software and websites. Two-way sync, automatic invoice creation, payment reconciliation.
What if our system does not have an API?
We work with what you have. Direct database connections for legacy systems, file-based integration (CSV, XML) for older platforms, screen scraping as a last resort. If data exists in a system, we can usually get it out and into another system.
How long does an API integration project take?
A straightforward two-system integration takes 2 to 4 weeks. A custom API with multiple consumers takes 6 to 12 weeks. Complex multi-system integrations with middleware can take 8 to 16 weeks. Fortnightly demos throughout.
Do you build APIs for mobile apps?
Yes. We build backend REST APIs that mobile apps consume: user authentication, data sync, push notifications, file uploads, payment processing. The API serves both iOS and Android apps through one consistent interface.
What happens when an API integration breaks?
Every integration we build includes monitoring, error logging and automated retries. If a third-party API changes or a connection fails, our retry logic handles transient errors. Persistent issues trigger alerts and we fix them before they affect your operations.
Can you connect old Access databases or legacy systems?
Yes. We regularly connect legacy Access databases, old desktop applications and on-premise systems to modern cloud platforms. Direct database connections, file export processing, or full data migration: whatever makes the most sense for your situation.
API Integration Sydney
Tell us what needs to flow between your systems
Tell us which platforms are involved, what data needs to move, and where the current process is breaking down. We will come back with a practical integration path, clear scope, and realistic cost.
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Tell Us What Needs Integrating
Tell us which systems need to talk to each other, what data needs to move, and where the current process fails. We will come back with a practical integration scope and next step.
Prefer a quick chat? Call 0425 531 127. We answer the phone in Perth.
