SEO Expert/Consultant for six months

Looking for an SEO expert to assist me with SEO for three UK websites. I already do content marketing and subscribe SEM Rush but need advice/review on how supercharge my SEO. You should be willing to work with me a rolling monthly basis (initially 6 months) consulting and advising. You will not be required to create any content as I have content writers preparing blogs and press releases on a monthly basis. You should have excellent knowledge of link building, article submission and on-page SEO with proven results.