A "sale trainer" is someone who helps teach and improve the skills of salespeople so they can sell products or services more effectively. Full definition
The sample below is for a Learning Corporate Sales Trainer Resume. (resumemycareer.com)
Currently I'm a regional sales trainer for a major wireless carrier. (thecollegeinvestor.com)
Critical thinking Corporate Sales Trainer with fresh, seasoned insights encouraging development in inquiry, reflection, dialogue, and shared understanding. (resumemycareer.com)