Javascript based Web Application - AMENDS

We have a web app that was previously written in Javascript that we need to update with some additional features. I am looking for a reactive developer who can turn around the changes as soon as possible.

The web app references an array of variables to then render varying figures and update the UI based on the array values and data entered by the user.

The changes include;

Adding a new array of variables to create another option of display a new UI layout and figures.
Updating some of the UI with new logos.

Unfortunatley due to the nature of the work we cannot share any code snippets until an NDA has been signed. An image to show the new proposed layout along with the full list of changes can also be shared.