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William DA SILVA
William DA SILVA
Full-Stack Developer

Modernization

Web Application Redesign — Modernize existing

Modernize your existing web application to improve performance, maintainability and user experience.

Your application works but no longer evolves fast enough

Your application is in production, but the code has become difficult to maintain, performance is degrading and new features take longer and longer to deliver. You need to modernize without stopping everything. Redesign or progressive modernization resolves technical issues while continuing to serve your users.

Who this service is for

Suitable if

  • Your application is in production but the code is difficult to maintain
  • Performance degrades as the number of users grows
  • New features take too long to deliver
  • You want to modernize the technical stack without rewriting everything

Not suitable if

  • Your application is new and the code is already clean
  • You already have a modernization plan in progress with a dedicated team

Expected results

  • A modernized application, more performant and easier to maintain
  • A technical foundation ready to absorb the next features
  • Measurable performance and user experience improvements
  • Cleaner, better-tested and better-documented code

Deliverables

  • Initial technical audit to identify priorities
  • Prioritized and estimated modernization plan
  • Progressive redesign of the most critical modules
  • Improved test coverage
  • Front-end, API and database performance optimization
  • Updated technical documentation

Scope examples

Progressive modernization

Module-by-module improvement without service interruption: performance, code, tests.

UI/UX redesign

Modern, responsive new user interface, preserving the existing back-end.

Stack migration

Migration from an obsolete stack to modern technology (Vue.js, Node.js, TypeScript).

Work method

I start with a technical audit to identify real issues and priorities. Then I propose a progressive modernization plan, module by module, without service interruption. Each improvement is delivered incrementally.

Pricing

Quote on request

After technical audit

The rate depends on application size, technical debt and chosen modernization scope.

Frequently asked questions

Do I need to rewrite everything?

No. In most cases, progressive modernization is preferable to a complete rewrite. The audit identifies which parts truly need rewriting.

Does the application stay in service during the redesign?

Yes. Modernization is done incrementally, without service interruption. Users continue using the application during improvements.

Where do I start?

A technical audit at €1,350 identifies the real issues and prioritizes actions. It's the recommended starting point.

Let's modernize your application

Describe your application, its known issues and your modernization objective. I'll propose a first exchange to frame the project.

Request an audit