Legacy App Modernization

Legacy Application Modernization

Your aging application is holding back your business. Modernize it without rebuilding everything — progressive migration to a modern stack.

The Problem

The Challenges You Face

1

Your app is built on obsolete technology (PHP, jQuery, Angular 1)

2

Every new feature takes 3x longer than it used to

3

Impossible to find developers who know your stack

4

Bugs and security vulnerabilities are piling up

The Solution

My Approach

I modernize your legacy applications in stages: technical audit, migration plan, progressive rewrite to React/Next.js/Node.js. Your app keeps running during the transition — zero downtime.

What's Included

A complete solution for your needs

Progressive Migration

No big bang — module-by-module transition.

Modern Stack

React, Next.js, Node.js, TypeScript.

Zero Downtime

App runs during migration.

Automated Tests

Test coverage to prevent regressions.

The Process

How we work together

Step 1

Audit

Code analysis, technical debt, and risk assessment.

Step 2

Strategy

Migration plan prioritized by business impact.

Step 3

Migration

Progressive rewrite module by module.

Step 4

Validation

Testing, performance, and team training.

Expected Results

What you can expect

+3x
Dev Velocity
Development speed post-migration
+50%
Performance
Response time improvement
-70%
Bugs
Incident reduction

Frequently Asked Questions

Everything you need to know

Is it better to rewrite or modernize?
Progressive modernization is almost always preferable. A complete rewrite is risky (second system syndrome) and expensive. Module-by-module migration reduces risk and delivers value from the first weeks.

Ready to Get Started?

Book a free consultation to discuss your project.

How would you like to proceed?

Book a call

Let's discuss your needs directly. It's the fastest way to validate your project.

Send a Message

Describe your project in a few lines and I will reply within 24 hours via email.

Direct Contact

Whether for a SaaS application or a website, I personally guide you.

Email

...

Location

Based in Montreal, QC

Although I work remotely with international clients, I actively serve several regions in Quebec.