You need to design and develop a simple front-end and a back-end of a web application that utilizes the "Google Calendar API" to post event of an organization. The front-end of the application should allow users to view calendar items and back-end of the application should allow an administrator to add, edit, delete event posts using a simple login. Your application should look attractive to both front-end and back-end users.

https://developers.google.com/google-apps/calendar