NextJs Dashboard Customization

I need an expert to modify the layout and arrange widgets on my NextJs Dashboard template. I have a specific layout in mind and I don't expect any fundamental change to the default template. Your primary task will be to integrate my system with new data visualization widgets. With experience in HTML, ReactJs, User Interface and User Experience, you're the perfect fit for my needs, as your proficiency will ensure the work gets done swiftly and efficiently.

You will be also required to connect to a backend server and populate data/charts in the widgets.