Native Polish speaker. I can assure perfect language skills, perfect grammar and style. I've written and translated lots of various types of texts: technical articles, travel texts, software, official documents, etc. I can start from almost now. I'm an IT specialist with over 12 years of experience. You won't be disappointed. My offer can be negotiated.
I can also prepare German, Czech and Slovak version (though I'm not native), for 250$ each.