Web App Maintenance & Repair

My production web application is showing a few issues that need prompt attention—intermittent errors, occasional slow-downs, and the odd security warning. I’m looking for an experienced software specialist who can step in, diagnose the root causes, and get everything running smoothly again.

The stack is flexible; whether the codebase sits on WordPress, Shopify, a fully bespoke framework, or another modern web platform, the goal is the same: stabilise performance, close security gaps, and leave detailed notes so future updates are straightforward. You should feel comfortable digging into front-end logic (JavaScript, React, Vue, etc.) as well as back-end services (PHP, Node, Python, or comparable) and databases like MySQL or PostgreSQL.

What I need from you:
• A quick initial audit outlining critical versus non-critical issues
• Clear repair plan with estimated turnaround times
• Implementation of fixes, patches, and performance tweaks
• A concise hand-over report documenting what was changed and why

Please share a brief outline of your relevant experience maintaining and repairing live web applications, including any frameworks or CMSs you specialise in. Let’s get this app healthy again.