Making a home-grown business app safe to change
DHF Tyres runs its workshop — jobs, quotes, invoices, POS and stock — on an in-house app. We added the engineering foundations — CI/CD, automated tests and reliable transactions — so it can keep growing.
Client
DHF Tyres
Industry
Automotive services (Victoria)
Engagement
Production hardening & DevOps
The challenge
The business runs on its own app every day, but it had grown organically: deploys were manual, there were no automated tests, and some screens had become slow.
They needed to keep improving it without risking the system the whole workshop depends on.
What we built
All code in source control, with production deploying only from the repository
Database performance fixes across the most-used screens
Multi-step money and stock workflows made atomic, so they can't be left half-finished
CI on every change: automated tests, code scanning and preview checks
Post-deploy smoke tests with automatic rollback, release runbooks and a local dev environment with synthetic data
Results
96.7s → 14ms
Customer lookup time after the database fix
200+ automated checks
Database tests run on every change before it ships
Auto-rollback
A failed deploy check rolls production back automatically
Reliable transactions
Core financial workflows tested against mid-transaction failures
Stack
Is your business running on an app nobody dares touch?
Book a free 20-minute call and we'll assess what it would take to make it safe to change.