An advertising copywriter works at an ad or marketing agency. Their job duties include taking the general ideas of advertisers and develop writing content or scripts for ads. They need to create copy that fits into the general goals of the campaign and sales strategies. An advertising copywriter may write for print, radio, TV, or online media, and should understand the best practices, such as SEO protocols, for writing in each medium. Career qualifications for an advertising copywriter often include a bachelor’s degree in advertising, English, journalism, or a related subject.