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Custom software development in Sydney

Notion Tech builds custom software for Australian businesses: systems shaped around the way you already work, not the other way round. We plan it, design it, build it in React, Node.js and Python, and support it after launch, the same way we run our own products.

2

SaaS products we run

Web + mobile

one codebase team

AUD

fixed-scope quotes

import { roster } from "@notiontech/core"

const week = await roster.plan({ clients, staff })
await billing.invoice(week)  // claims ready
await payroll.export(week) // to Xero

Software that fits your business, not a template.

If off-the-shelf tools force workarounds, a custom system removes them.

Business systems

Job, booking, rostering and inventory systems that replace spreadsheets and double entry.

Client & staff portals

Secure logins where customers or workers see their own information, documents and tasks.

Dashboards & reporting

Live numbers from your systems in one place, with exports your accountant can use.

Workflow automation

Approvals, reminders and hand-offs that happen on their own, with a clear audit trail.

SaaS products

Subscription software with billing, onboarding and admin, ready to sell to other businesses.

Legacy rebuilds

Old Access, Excel or PHP systems rebuilt on modern technology, with your data moved across.

When custom software makes sense

Off-the-shelf software is the right choice for many jobs. Custom software earns its cost when your process is what makes you different, when staff spend hours copying data between tools, or when the subscription bill for five half-fitting apps keeps growing.

We start every project by mapping how work actually flows through your business today. That map usually shows a few steps that cost the most time or cause the most errors, and those are what the first version of the software fixes. The rest can wait.

Built the way we build our own products

Notion Tech runs two software products of its own, Rostery and AuditCore, used daily by Australian care providers. Client projects use the same stack and the same habits: typed code, automated tests on the risky parts, staged releases and monitoring after launch.

Front ends are built in React and Next.js with TypeScript. Back ends run on Node.js and Express with PostgreSQL, with Python where it is the better tool, for example document processing. Real-time features use Socket.io, payments use Stripe, and AI features use the leading AI models through secure server-side calls.

  • You own the code and the data

  • Hosted in Australia when you need it

  • Documentation and handover included

  • Support plans after launch

Rostery: one system instead of five.

Rostery replaces separate rostering, timesheet, billing and payroll tools for NDIS and aged care providers. It includes a worker mobile app on iOS and Android, NDIS claim files and connections to Xero, QuickBooks and Employment Hero.

The same team that builds and runs Rostery builds your custom software.

Rostery rostering and scheduling screen

From idea to launch, step by step.

Fixed scope, fortnightly demos, no surprises on price.

01

Discover

Workshops to map your process and agree the scope and price.

02

Design

Clickable designs of the key screens before any code.

03

Build

Two-week cycles with a working demo at the end of each one.

04

Launch

Data moved across, staff trained, go-live supported.

05

Grow

Support, monitoring and new features as you grow.

TypeScript

JavaScript

React

Next.js

Node.js

Express

Python

PostgreSQL

Socket.io

Tailwind CSS

Stripe

AWS

Docker

Questions about custom software

Still have a question? Talk to us.

How much does custom software cost in Australia?

It depends on scope. A focused internal tool can be a few weeks of work, while a full platform with mobile apps takes several months. After a short discovery session we give you a fixed-scope quote in AUD, so the price is agreed before building starts. Our pricing guide explains how we price.

How long does it take to build?

Most first versions take 6 to 16 weeks. We release in stages, so the most valuable part is usually working within the first month or two.

Do we own the software?

Yes. You own the code, the designs and your data. We can host and support it, or hand everything to your own team.

Can you work with our existing systems?

Yes. We connect new software to tools like Xero, Stripe, QuickBooks, Employment Hero and your CRM, and we can import data from spreadsheets or older systems.

Which technologies do you use?

React, Next.js and TypeScript for the front end; Node.js, Express and Python for the back end; PostgreSQL for data; React Native for mobile apps. These are the same tools we use for Rostery and AuditCore.

Let’s talk about your project.

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

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