DGC Workforce Solutions Group

I recently asked a coworker to read a technical document I had written. They understood the subject but said some parts were difficult to follow. When I read it again, I noticed several long sentences and too many technical terms. I started considering professional technical writing services. Has anyone had technical documents rewritten by a professional? Did they simplify the language without removing important information? I would like to hear about your experience because I want the document to be useful for both experts and beginners.