React website fixes

I am seeking a developer with experience in React to help me fix some bugs and add a new feature to my website. The updates I need are focused on functionality improvements, and I would like to prioritize user authentication. The ideal candidate should be able to complete the work within a week. Specific requirements for the project include:

- Fixing bugs on the current website
- Adding a new feature to improve website functionality
- Prioritizing user authentication
- Experience with React
- Ability to deliver on a tight deadline