Error Correction and Enhancement of Website

I need an experienced programmer to improve my website, correct its errors, and enhance its performance. The site utilizes a modern full-stack JavaScript/TypeScript technology stack.

Key Issues:
- UI/UX problems that need addressing
- Real-time features experiencing connection drops and data synchronization problems
- Numerous glitches throughout the site
- Need for admin and delivery manager accounts to be created

Skills and Experience Required:
- Proficient in React with TypeScript, Node.js with Express and TypeScript
- Familiarity with using TailwindCSS and ShadcN UI for styling
- Experience with Passport.js for authentication and in-memory storage
- Skilled in using Vite, React Hook Form, Zod and WebSocket
- Strong problem-solving skills to identify and rectify errors
- UI/UX design skills to enhance the user experience
- Ability to create and manage site admin and delivery manager accounts.