Article rewriting for SEO

We need writers who are capable of creating original content articles (for SEO) on a software development topics which are related to our products by using specified keywords. The articles need to be unique, clear, useful and informative. The articles has to have GOOD English. These are my basic requirements: - 500+ words per article - articles are original and unique (can't be found anywhere else) - no copy/paste techniques applied - must pass copyscape - MUST write in fluent english, No spelling and grammar mistakes. You have to provide 50 articles within 1 month. Minimum 10 articles each week. The selected writers will get 1$ per article. I'll put 50$ to escrow when project will be started and I'll release money only after I'll check unique content.