Three default roles in Jira

 Default project roles in Jira

Once you create a Jira site, you will be seeing the roles of administrator, member and a viewer. These are default roles in Jira. Each role is specific and here is the summary of each role in Jira:

• Administrators - these are also called project administrators. They have the highest permissions including creating, deleting, editing issues, adding users to the project and assigning them project roles meaning that they can add other project administrators, add or remove watchers to the issues - watchers get notified about any changes for the specific issue that they are watching. Administrators can also rank the issues which is a combined permission of editing and scheduling the issues. In a nutshell, administrators have all of the permissions that members and viewers have.
• Members - these users have the permissions like creating and editing the issues, except having the option to Administer project like the administrators have. This also includes cloning the issues, adding work log to the issues 
• Viewers - they only have the option to view the issue, add comments and attachments to the issues and basically nothing else

It's important to know that in order of any of these roles to be able to see the projects, they need to have the Browse projects permission in order to browse issues in the projects.

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