Dave Nelsen has been a copyeditor, proofreader, and writer for 20 years, specializing in nonfiction. He joined Dragonfly Editorial as a contractor in 2017 and went full-time for Dragonfly in 2021. Before that, Dave worked for a monthly quality control magazine and a couple of ad agencies. He's also edited everything imaginable as the sole proprietor of his own freelance company, The Grammar Geek.