Jobot has a client with a one-week project to refactor a legacy part of their website that relies heavily on direct DOM manipulation. You will be tasked with improving the performance and maintainability of several interactive features using vanilla JavaScript. This involves optimizing event listeners, reducing DOM queries, and restructuring existing code to follow best practices. This is a perfect gig for a JavaScript purist who enjoys cleaning up code and making web pages faster. Strong fundamentals in core JavaScript are essential for this role.

This project is a surgical strike on a specific area of a client's web application that is suffering from performance issues due to inefficient, legacy JavaScript code. Your goal is to analyze the existing codebase and refactor it for clarity, efficiency, and maintainability without using any frontend frameworks.

Your Tasks Will Include:

• Analyzing existing JavaScript code that directly manipulates the DOM.
• Identifying performance bottlenecks, such as excessive DOM queries in loops or inefficient event handling.
• Refactoring code to improve performance. This may involve techniques like event delegation, caching DOM elements, and using DocumentFragments for bulk updates.
• Rewriting complex, nested functions into smaller, more modular, and readable functions.
• Ensuring that all interactive functionalities remain intact and bug-free after the refactor.
• Documenting the changes made and the reasoning behind them.

The ideal candidate for this project is someone who is deeply comfortable with the browser's DOM APIs and understands the nuances of how JavaScript interacts with the page. You should be able to read and understand existing code quickly and apply targeted improvements. This is a great opportunity to demonstrate your core JavaScript skills and deliver a tangible performance improvement in a very short amount of time.

• Deep understanding of vanilla JavaScript (ES6+).
• Strong knowledge of the HTML DOM, events, and web APIs.
• Experience with browser developer tools for performance profiling.
• Ability to write clean, efficient, and well-commented code.
• Previous experience refactoring legacy code is a plus.

• Focus on pure JavaScript and performance optimization.
• A quick project with a clear goal and measurable outcome.
• Fully remote and flexible working hours for the duration of the project.
• Excellent opportunity to showcase your fundamental skills.