Fix my database in terms of relationships and queries

I am in need of a talented software engineer to fix my database in terms of relationships and queries. I am currently using MySQL to power my database which is relatively simple, consisting of few tables and relationships. I am looking for someone to help with both the database design and query optimization. It is important to me that the engineer is knowledgeable and experienced in working with this type of system. The success of my project depends on making sure all the relationships and queries are done correctly. If you think you have the skills and experience necessary, I would love to hear from you and discuss the project in more detail.