React + TypeScript Performance Optimization

I'm looking for a developer to improve the performance of an existing React + TypeScript dashboard application. The app has become noticeably slower as more features have been added. Areas I'd like reviewed include: Slow page load on the dashboard Unnecessary component re-renders Large data tables that become sluggish with 5,000+ records Opportunities for code splitting and lazy loading React Query caching and request optimization Bundle size reduction General code cleanup and improved maintainability Deliverables: Optimized code with clear commit history Brief explanation of the changes made and why Before/after performance metrics where possible No UI changes unless necessary to improve performance