NodeJS & Ruby Site Optimization

I need a professional in NodeJS and Ruby to optimize my primary site and make some changes.

Primary Requirements:
- Optimize for code efficiency:
- Reducing redundancy
- Improving readability
- Refactoring outdated code

- Implement changes:
- UI/UX enhancements
- Adding new features
- Fixing existing bugs

Ideal Skills and Experience:
- Proficiency in NodeJS and Ruby
- Strong background in code optimization and refactoring
- Experience with UI/UX design principles
- Ability to add new features and fix bugs in existing codebases
- Attention to detail and a commitment to delivering high-quality work

Please provide examples of similar work done.