Book editing of Chinese sci-fictions

Beijing Guomi Digital Technology is a publishing house based in China. The company was founded in 2010 to bring the best of contemporary Chinese literature to international readers across the English-speaking world. We have signed ten sci-fi short stories (about 190,000 Chinese characters together)with a top sci-fi writer in China, which will be translated into English. Now the company is looking for a free-lance editor with American English as the mother tongue. Our budget is USD15-25/thousand word. Native English speaker is a must, interested in sci-fi writing better, no need to understand Chinese.