App developer 

Also known as a software developer or software architect, an application developer is responsible for developing and modifying source code for software applications. These applications are aimed at aiding customers with computer tasks or programs.

Regardless of the title, this type of computer professional writes programs for the web, an operating system or a device. An application developer starts a project by outlining the specifications (defining what the program does, input and what the output will be along with any interfaces). The developer then creates a program or system, taking into consideration all the specifications.

The application developer then codes the application, runs tests and adds finishing touches. Along with creating applications, these professionals also maintain and troubleshoot programs, which can include making updates and modifications to existing programs. These professionals may also create documentation and make databases.
Your collection is already set up for you with fields and content. Add your own, or import content from a CSV file. Add fields for any type of content you want to display, such as rich text, images, videos and more. You can also collect and store information from your site visitors using input elements like custom forms and fields.

Be sure to click Sync after making changes in a collection, so visitors can see your newest content on your live site. Preview your site to check that all your elements are displaying content from the right collection fields.