Hi,
We require an SEO expert who can work offsite by link building,social bookmarking etc.
You also need to be able to work onsite and increase page speed, improve meta titles, heading tags and improving code. e.g Minimize html.
I have a fair amount of knowledge about SEO but I am too busy running the business side of the website so I will question you about what you think is necessary to see if you know what you are talking about regarding SEO.