As a field applications specialist, your duties and responsibilities are twofold. In one capacity you are a sales representative, helping finalize equipment purchases or develop leads for potential new clients. However, you also provide customer support, train customers on the technical specifications, installation, and use of the equipment you sell, and troubleshoot issues with the products. As a field applications specialist, you usually travel across a given region to manage accounts, follow up on leads, and meet with current customers.