Link building

I'm looking for an experienced link building expert to help increase the visibility and authority of my website. My website has a domain authority less than 30 and I need help improving it. The link building strategy should focus on quality links from relevant industry sites, general high authority sites, local business directories and Vendita Immobiliare. It is important that the links are natural, quality and from sites with solid page rank. I am looking to have my project completed as soon as possible.