Deleting your account or organization
Under Settings > You, look to the "Delete account" link shown in the bottom left.
Non-admins can delete their account and the organization will be unaffected. Admins will receive a different prompt, confirming that you would like to delete your entire organization.
Deletions are permanent
Account or organization deletions are completely un-doable and permanent. All of your associated data is permanently deleted (jobs, candidates, etc).
Deletion requires email verification and multiple confirmation steps.