Series of marketing writing projects

I am a Creative Director for a research company serving various academic markets. We are seeking a freelance writer to handle the writing and editing of various promotional pieces, including product flyers and webpages, marketing emails, and more. The work is sporadic, with an average of 20 or so requests made per year. You will be supplied with ample context and background information prior to tackling each new writing project. The volume of work may go up based on how well we work together.