Writer Needed For Ongoing Work

I am looking for a writer to work with long-term who is skilled in their craft and who also has excellent research skills. You must be an English native speaker or if you are not your English must be a very high standard. This first small job will be for a short article of around 100-200 (I will provide the topic and keywords) I would then require ten re-writes of that mini article. All content written has to be 100% original and will be checked using Copyscape. Basically this first job will act as a form of test and if the finished articles are of high quality then there will be a lot of ongoing work. So if you are looking for a long term writing partnership with guaranteed ongoing work and pay. Please provide samples of your work. Also I am looking for someone who can commit to a certain number of articles per week. So not someone who already has a full time job!