Convert our php website to Joomla

We currently have a website [[login to view URL]][1] written in php which the owner / managers are seeking to move onto a joomla-based service i.e. where they can easily update, manage, and add new articles and pages, which they cannot do at the moment. A previous track record in designing joomla based websites to clients specifications is essential and references will be required. Experience of advising and designing on video and embedding is also desirable.