Various fixes on an expression engine website

We need a web developer who has experience working with Expression Engine to make the below changes: 1. Add structured data tags to the website (Basic [login to view URL] and Facebook Open Graph tags) 2. Fix a bug which is causing pages to be shown (and indexed by Google) using multiple URLs e.g. all of the URLs below display the same page: [login to view URL] [login to view URL] www.website.com/contact// www.website.com/contact////////// Only the second ([login to view URL]) should display the page correctly.