SEO on site and off site

I am looking for someone to complete an SEO project on my website.( https://causticflakes.com/ )I need to have both on-site and off-site optimization done in order to increase traffic to my website. I do not have any existing SEO work in place, so I am looking for someone to start from the beginning. The goal of the project is to bring in more traffic to my website, so I am looking for an experienced professional that can provide quality results.