About us. DF Wireless - Metro By T-Mobile Authorized Dealer is a small business in Charlotte, NC. We are professional and agile. Our work environment includes. Modern office setting. Food provided. Safe work environment. Lively atmosphere. On-the-job training. Job Title. Retail Sales Associate. Company. Metro by T-Mobile. Location. South Charlotte. Job Description. Are you a dynamic individual looking to join a vibrant team. Metro by T-Mobile is ...