JavaScript Color Prediction Website Developer Needed

I'm in need of a seasoned JavaScript developer to assist with my color prediction website that has been live for some time. Given my previous developer's unavailability, I need someone who can grasp the entire codebase and collaborate with me on it. If you have experience with similar projects, I encourage you to share your proposal as I'm looking for a long-term partnership.

Key Responsibilities:
- Bug fixing: Identifying and resolving issues to ensure smooth operation.
- Adding new features: Implementing additional functionalities as per our roadmap.
- Performance optimization: Enhancing the website's speed and user experience.
- Full website: Working on the entire site, not just isolated parts.

Documentation:
- I'm fortunate to have comprehensive documentation available to aid in understanding the code and the website's architecture.

Ideal Skills and Experience:
- Proficiency in JavaScript, particularly with Node.js and React.
- Experience working on similar projects, preferably color prediction or gaming websites.
- Strong bug fixing, feature adding and performance optimization skills.
- Ability to comprehend and work with comprehensive documentation.

Please note, this opportunity is exclusive to freelancers. Agencies need not apply to avoid unnecessary time wastage for both parties.