godaddy websites seo and back links

As an owner of an existing marketing consultancy business in UK, I need of help with optimising my godaddy website's SEO, key word search and back links. Goal is to improve my search engine ranking, so I can increase visibility and contact us form completions. I have a tight timeline, as I'd like to see improvements within the next 1-3 months. That's why I'm looking for experienced professionals who can help me reach my SEO goals in this time frame and guide me through this process. Google, FB, Linkedin and Bing ad campaigns have driven 11k traffic and only a handful of conversions.