404360 SEO Monthly campaigns

I need a company to handle all of my SEO work for google, yahoo, bing and other search engines. I need my sites to rank near the top in the selected categories. My site is a department store that will have 10 separate departments. The site appears to be one site, but is broke up into 10 separate web domains. I need the SEO done on the 10 separate web domains. The categories are Art, Health and beauty, green products, tools, electronics, pets, outdoor living, home and garden, kids and baby, and office supplies.