A junior copywriter is a professional who researches and creates copies under the guidance of a more senior copywriter or an editor. You will usually be assigned copies to write or may instead be given tasks such as researching to assist a more senior copywriter's project. This is a great position for a newbie looking to get started in the profession.
This position requires a strong work ethic, creativity, and good research skills. Your resume should include all creative experience, especially writing experience. Showing your ability to work in a team and support more senior staff is also a significant benefit for this position. Take a look at this resume that does both successfully.