SEO and social media assistance

We are a private healthcare agency providing wellbeing workshops and therapies mainly in the corporate sector and have been established for over 13 years. We are currently looking for someone to help develop and implement an SEO campaign and ongoing strategy to enhance our rankings and drive traffic to our website organically and through an established PPC campaign. A good knowledge of social media would be an advantage as we would like to incorporate this into the strategy too (in particular Linked In and Google +).