article writers wanted

Looking for article writers. We have substantial, ongoing, contracts in place and we are looking to add people to our teams. There is a variety of work, and articles range from 300 words to 1000 words each. Looking for excellent grammar, pluralisation and word selection (vocab). No preference of country of origin, you just need to be able to write excellent articles. Ones that pass copyscape, and read like they are written by English as a first language writers. Flexibility to write in UK or USA english would be seen as an advantage. There is moderate research involved in the articles. But, nothing outside basic Google and Wikipedia searches. Please bid based on 10,000 words of content. Target range 0.01-0.015 per word.