Skip to main content
Mupax

Modernize without rewriting everything.

An old Rails or PHP system nobody fully understands, releases that take hours, a codebase too risky to touch. We stabilise it first, then modernize it piece by piece - the business keeps running throughout.

The system works, but every change is a risk

A codebase that's grown for years carries decisions nobody remembers making. There are no tests, so the only place a change really gets proven is production. Releases take hours and need someone watching. The real cost isn't a crash - it's that the system becomes too dangerous to touch, so features stall and the technical debt keeps compounding.

What we do

Audit and map what exists - dependencies, risk areas, and what causes the worst on-call nights
Incremental modernization using the strangler fig pattern - no big-bang rewrites
Add automated tests around what's there before changing it, so a change stops being a gamble
Fix the highest-risk security and performance issues first
Zero-downtime deploys, shipped in small, reviewable steps
Full documentation and knowledge transfer, so the system stays maintainable after we leave
Fixed-price projectExact quote after a short audit of the current system and its constraints.

How it works

Audit

We map the codebase, its dependencies, and the areas causing the most risk and pain. You get a clear picture of what's actually there.

Stabilize

We add tests around the highest-risk parts before touching them, so changes stop being a gamble.

Modernize incrementally

We rebuild one self-contained part at a time and shift traffic to it gradually - the strangler fig pattern, not a rewrite.

Hand over

Documentation, clean deploys, and a system any competent developer can maintain - yours, not ours.

Getting out of a legacy system

A 10-year-old system nobody fully understood, two-hour releases, and a database that crashed under peak load. We rebuilt it piece by piece using the strangler fig pattern - the business never stopped running.

View project

Frequently asked questions

Do you rewrite the whole system?

No. A full rewrite is the highest-risk option and usually the wrong one - it freezes feature work for months and often fails outright. We modernize incrementally with the strangler fig pattern: one part at a time, tested, running next to the old system until it's proven.

What if there are no tests at all?

That's normal for an inherited system. We start by writing tests around what exists today, so there's a safety net before anything changes - not by demanding a rewrite first.

Will this cause downtime?

No. Each piece is shipped and verified while the old system keeps serving traffic, and we switch over only once the new version is proven.

What languages and stacks do you work with?

Mostly PHP (Magento, Laravel, plain PHP) and Ruby on Rails, plus whatever the inherited system happens to run on. If it's a web application, we can almost certainly work with it.

How do you price this?

Most modernization work is scoped as a fixed-price project after an audit, so you know the cost before committing. Ongoing stabilization work can also run as a support retainer.

Let's talk about your system

Tell us what's slow, risky, or hard to change - we'll map out a path that doesn't require a rewrite.

Request a quote