Webdesign and logo for ecommerce portal

I need a logo and a webdesign for a new ecommerce portal for webshop owners. The site will be with news, guides, tips and tricks for ecommerce site owners. The site will be running on Vivvo cms. But i just need a great webdesign and logo from you, then our team will do the rest (programming and setting up the template).

Please include examples of your design work in PM. The selected provider will be chosen based on the portfolio. I must feel confident with your work process. Also include the timeframe, I would prefer this done very fast.