ServiceNow is a cloud computing service that companies use for operations, asset, and service management. As a ServiceNow developer, you create software that can interface with this platform. You take steps to program applications, forms, and other tools that meet the needs of your client or employer. You typically perform your duties with other members of the development or IT team. You test your code after programming and then debug and make changes if necessary. Since ServiceNow is a cloud-based service, your responsibilities usually involve working with JavaScript or other web-based languages such as XML and HTML.