Native US writers for technical writings

Looking for native US writers, who have skill writing technical details of a software/ App product. Can pay up to US$4 per hr. Need each writer-up containing 400-700 words. If you can deliver goods, we have long terms association for you. Would like to see your write-up details before awarding project, live samples will be appreciated. We need only experience writers. Do not apply, if you are not from US. We can discuss project in detail, once, we see your current work.