Mockup of a SaaS Platform

I require mockups of a SaaS platform to use in a pitch deck.

-The mockups need to show what the platform will look like and display its functionality.
-Wireframe will be provided from which to create the mockups.
-Previous experience in designing mockups required.
-Must be able to provide examples of similar previous work.
-Must have consistently positive reviews.
-Quick turnaround required.