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Legacy software modernisation, without the big-bang risk

Notion Tech rebuilds ageing business systems, such as Access databases, giant spreadsheets, old desktop programs and unsupported PHP sites, on modern, secure technology. We move your data across, keep the business running during the change and train your team on the new system.

// before: orders.mdb, macros, one PC in the office
await migrate({ from: "access", to: "postgres" })
await verify(rows)  // every record checked
// after: web app, phones, backups, audit log

Old systems, rebuilt to last.

Keep what works. Replace what holds you back.

Access & Excel replacements

Multi-user web apps that replace fragile databases and shared spreadsheets.

Desktop to web

Programs tied to one office PC rebuilt to work securely from any browser or phone.

Old PHP & WordPress rebuilds

Unsupported code replaced with maintainable, tested software.

Data migration

Years of records cleaned, moved and checked, with nothing left behind.

Integrations added

Connect the new system to Xero, Stripe, payroll and your other tools.

Security & backups

Logins, roles, encryption, audit logs and automatic backups from day one.

Signs it is time to modernise

Legacy systems rarely fail all at once. They get slower, only one person understands them, they cannot be used from home or a phone, and every change feels risky. Often the software they depend on is no longer supported, which is a security problem as well as a practical one.

If your team keeps a second spreadsheet "because the system can’t do that", or you are worried about what happens when a key person leaves, it is time to plan a replacement.

A staged move, not a leap

We start by documenting what the old system really does, including the unwritten rules staff carry in their heads. Then we rebuild in stages, running old and new side by side where needed, and migrate data with checks at every step.

Staff are trained before go-live, and the old system stays available read-only until everyone is confident. The result is a modern system your business can keep improving, instead of one it is afraid to touch.

  • The old system documented first

  • Data migrated and verified

  • Old and new run side by side

  • Training and go-live support

From idea to launch, step by step.

Fixed scope, fortnightly demos, no surprises on price.

01

Discover

Audit the old system, data and risks.

02

Design

Design the new workflows with your team.

03

Build

Rebuild in stages with data migration rehearsals.

04

Launch

Final migration, training and supported go-live.

05

Grow

Improvements the old system could never do.

React

Next.js

TypeScript

Node.js

Python

PostgreSQL

MySQL

Docker

AWS

Questions about legacy modernisation

Still have a question? Talk to us.

Can you replace our Access database or spreadsheets?

Yes. We rebuild them as secure web apps that many people can use at once, from the office, home or a phone, and we migrate your existing data.

Will we lose our old data?

No. Data migration is planned, rehearsed and checked. We reconcile record counts and totals between the old and new systems before go-live.

Do we have to stop work during the change?

No. We build in stages and can run both systems side by side, so the business keeps operating.

What if nobody knows how the old system works?

That is common. We read the code and data, talk to the people who use it and document it before rebuilding.

How long does modernisation take?

A small system can take 6 to 10 weeks. Larger systems are staged over several months, with the highest-risk parts first.

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

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