Telemarketers help businesses build their lead base and increase sales. If you are interested in making a career in sales field, a telemarketing job is a good place to start. A telemarketers job is to persuade people to buy a product or a service. A telemarketer is actively making phone calls to businesses or households. Telemarketing jobs are available on full-time and part-time basis, these jobs are ideal for students and recent grads who are trying to make a position in the marketing world.