Drupal ecommerce modules taxonomy

I work for an online marketing company looking for a developer to implement a Drupal CMS/ecommerce site. It's a fairly robust site (400 pages) with some slightly more complicated taxonomy requirements. I am a project manager and would coordinate content/images/data, etc. but need your help in creating taxonomy, creating ecommerce, customizing layout, identifying and implementing modules, etc. Also, would need your help on consulting, possibly training. All work can be done at your location - may need one face to face meeting. fyi We're in Chicago.