Data intense PHP/MySQL/ based fairly optimized website needs complete on-site SEO optimization. This should include W3C validation, SEO friendly URLs, creation of complete XML and html sitemaps, unique titles, meta descriptions, meta keywords, proper redirects, text/HTML ratio, [url removed, login to view] and any other relevant strategies to make the site 100% search engine friendly so that all the pages are indexed quickly. Please bid only if you are an expert in all of the above.
Do not bid for link building and article submissions and other off-site SEO works.
I will provide the site details and you will have to provide me your analysis and explain how you will improve the present structure. PM me if you have questions.