Junior scrum masters have the same general tasks as their senior counterparts, but they are supervised by senior scrum masters or managers. Tasks assigned to you may include coaching scrum teams, working with different departments to complete a project successfully, and problem-solving for teams you are coaching.
Recruiters want to see three things when looking at your resume. Firstly, you need to have scrum certification and knowledge of Agile methodology. Secondly, they will need to see an educational background in computer science or a related field. And thirdly, they want to see that you have put your scrum training into practice and coached/led teams effectively. Build your resume with these points in mind. This resume highlights all three points very successfully.