Home / Services / Integrations & API Development

API integration services that end double entry

Notion Tech connects the software your business already uses, such as Xero, Stripe, QuickBooks, Employment Hero, your CRM and booking tools, so information moves between them automatically. We also build secure APIs so your own systems and partners can connect to you.

Xero

Stripe

Your app

Payroll

CRM

Your tools, talking to each other.

Stop copying data by hand. Let it flow, checked and logged.

Accounting

Invoices, payments and contacts synced with Xero, QuickBooks and MYOB.

Payments

Stripe payments, subscriptions, refunds and payouts linked to your records.

Payroll & HR

Timesheets and pay data sent to Employment Hero and payroll systems.

CRM & marketing

Leads, contacts and activity kept in step across your CRM and email tools.

Custom APIs

Secure, documented APIs for your apps, partners and integrations.

Automations

Webhooks, scheduled jobs and no-code tools like Zapier and Make, done properly.

Integrations we have shipped

Rostery sends invoices and pay runs to Xero and QuickBooks, exports pay data to Employment Hero, takes payments through Stripe and builds NDIS claim files. These integrations run every day for real providers, so we know how to handle the hard parts: retries, duplicates, rate limits and clear error messages.

For clients we do the same: map the data on both sides, decide which system is the source of truth, and build a sync that is logged, can be re-run safely and alerts someone when something needs attention.

Built to be reliable

An integration you cannot trust is worse than none. Every connection we build has logs you can read, safe retries, protection against duplicates and a simple screen showing what synced and what failed.

  • Logged and re-runnable

  • Duplicate protection

  • Error alerts to your team

  • Documented for your developers

From idea to launch, step by step.

Fixed scope, fortnightly demos, no surprises on price.

01

Discover

List the systems, data and rules on each side.

02

Design

Field mapping and sync design signed off.

03

Build

Build, with test accounts on both sides.

04

Launch

Backfill historical data and switch on.

05

Grow

Monitoring and changes as systems update.

REST APIs

Webhooks

OAuth 2.0

Xero API

Stripe API

QuickBooks API

Employment Hero API

Node.js

Python

PostgreSQL

Zapier

Make

Questions about integrations

Still have a question? Talk to us.

Which systems can you connect?

Any system with an API, including Xero, QuickBooks, MYOB, Stripe, Employment Hero, HubSpot, Salesforce, Google Workspace and Microsoft 365, plus custom and older systems through files or databases.

Should we use Zapier or a custom integration?

Zapier or Make are great for simple flows. Custom integrations make sense when volumes are high, data must be checked carefully, or the logic is too complex for a no-code tool. We will tell you which fits.

What happens when a sync fails?

It is logged, retried safely and, if it still fails, someone on your team gets an alert with a clear reason.

Can you build an API for our product?

Yes. We design secure, versioned and documented APIs with authentication, rate limits and webhooks.

How long does an integration take?

A single, well-documented connection can take a few weeks. Larger multi-system projects are planned in stages.

Let’s talk about your project.

Tell us what you need. You will get honest advice and a clear next step.

Tell us about your project

Free first call. No obligation.

We reply within one business day. Your details are only used to answer your enquiry.

Thanks, your message is on its way. We will reply within one business day.