Amazon Sales Expert Needed

We are currently selling a food product on Amazon, but do not know how to optimize the system and take advantage of everything on Amazon. All we have done is post our product on the site, and we have fairly decent regular orders every week. We want to run specials, and attract more buyers. We are looking for someone who can work with us ongoing to alert us to Amazon opportunities (ie back to school promos etc) and counsel us on how to get more sales on Amazon. This person will identify and craft Amazon promotions and will help us figure out how to get our listings as the top of the searches and get more traffic, better feedback and grow our sales significantly. Again - this will be an ongonig project that will not require a lot of time every day, but will be necessary at least weekly for a short amount of time at a minimum. We don't know what we don't know. So we are really hoping that we will find someone to help us increase our sales 100 fold. Thank you! Ella