I have an in-house application written in an older version of ExtJS that our team relies on every day for data management. It sits on a self-hosted Windows server stack (WAMP, PHP, MySQL, HTML5) that you will access through AnyDesk. Phase 1 is urgent: the current build must be patched so staff can work without interruption. That means resolving outstanding bugs, tightening performance, and smoothing rough UI/UX edges that slow users down. Phase 2 is strategic: once the immediate pain points are gone, I want the codebase moved forward—either upgraded to the latest ExtJS or migrated to a more maintainable framework. I’m open to informed suggestions here; React, Angular, Vue, or any other well-supported alternative are all on the table as long as they safeguard our critical data-management features and keep maintenance straightforward. Deliverables • Phase 1: a stable, usable release on the existing servers with confirmed bug fixes, measurable performance gains, and a cleaner interface. • Phase 2: a written upgrade/migration plan, then execution of that plan through to a production-ready build. You will need proven, hands-on experience with both older and newer ExtJS along with solid WAMP, PHP, MySQL, and HTML5 skills. Remote work is done exclusively on my machines via AnyDesk, so comfort with that setup is essential. If you thrive on turning creaky legacy apps into fast, modern tools, let’s talk details and timelines.