You can use the Open Graph tags to help describe your page to Facebook or LinkedIn. In the Social -> Open Graph area, make sure those are enabled. Then, on your pages, you can set the title, description or image to use when sharing with the following tags:
{SCOpenGraph title=Title for page}
{SCOpenGraph description=Description for page}
{SCOpenGraph image=http://site.com/link-to-image.jpg}
If you don't specify the tags, JLinked or JFBConnect will guess at the best tags. On your page, your meta title and meta description are what you show for the Share button above "front_heading not found! - Job Details - Job..." I'd recommend fixing that either way, as that's just bad for SEO in general.
Hope that all makes sense, but if not, just let us know!
Thanks,
Alex