Job Description. Job Description. As Subway Manager in Training, you’ll learn to be in charge of the in-store sandwich shop at Johnny’s Markets. You’ll work closely with the Johnny’s Store and Area Managers, doing whatever it takes to keep your location clean, safe, well-staffed, well-supplied, and ready to satisfy customers. Must be available 24 hours a day as needed. What You’ll Learn To Do. Make your restaurant a shining example of Subway, fro...