Complete ReDesign and Build of our Corporate Web Site

Hi all, We would like to completely redesign and build the website of our company. We are also looking for the maintenance of it in the future. This bid is however only for the rebuild/redesign of the site. We are a Consultancy Company (System Integrator) working in the field of ERPs. We are Partner of the software vendor of the ERP package we work with. It will be required to show it somehow, details will follow. We are not biased to use a particular technology, but we would like to avoid to use Microsoft Technologies. The style of the site have to be modern, simple, clear and attractive: Big Buttons, few clear statements, etc... We would like to have something at the same time "standard" and "unique". Examples of what we like will be provided and suggestions from the designer itself will be of course highly appreciated: we work in the ICT industries ourself, but we are "ERP guys" not web designers/developers. The site can be deployed on our "internal infrastructure" (Virtual machines running the needed technology stack) or on hosting services like Rackspace or AWS. We have our corporate email on GMail, hence integration (and perhaps hosting) with the Google (Google Docs, Gmail, Calendar, etc...) is desired. The technology stack will be built and provided by us on the designer’s requests. To start we want to have a "showcase site" but it should be able to add features easily. Among those desired future features there are: - A reserved area for employees integrated for the authentication) with our internal Active Directory to get: o Internal Announcements o Integration With Google Docs and Calendars o Internal Site for Planning Resources o Internal Blog o Download Files o Etc… - A reserved area for customers to get: o Support (for example with integration with Zendesk) o Download files o Customer Blog o Etc… It will be highly appreciated to already have some of them if not all... :-) Thanks!