GD LinkedIn Badge adds a simple widget to WordPress for setting and adding the badge linking to LinkedIn profile. You can select image for the badge from officially available badges, set up the text and URL to your profile. You can add more than one widget with different settings.
This plugin adds simple widget that will display a badge with a description and a link to a LinkedIn public profile page. Plugin also fully supports Widget object introduced in WordPress 2.8 and allows multiple instances.
You can test every theme and plugin before decide to buy. Test website include admin side access: