Journalist for project work and regular work for business/marketing writing

I need a experienced business writer/ marketing writer/ journalist for my projects and clients to create articles, newsletters and possible brief sample magazines. Must have strong strengths in business and marketing and be able to write in easy to understand format. Would prefer english speaking person with strong language skills and writing skills. Editing skills would be extremely valuable. Please detail your background and experience to determine who is the right person. Please also quote your per hour work and samples of past projects and how much you charged per project. (e.g. newsletter (4-8 pages) , 1 page article (250 words) Please also send samples of your work.