Big Data Architecture Design for SaaS Application

Project Description

We are building a web based SaaS application (LAMP framework) focused on helping sales and marketing better target and engage prospects.  The application is powered by a large database (currently mySQL), which is updated on a daily basis with new incoming data.  Due to the increasing size of our daily updates, our mySQL scalability will soon hit a wall and we need to redesign our system architecture.  

We're looking for someone to help us plan and design a new architecture for the next version of our POC application.  This project will likely have multiple phases, the first being the design of a general framework upon which we can continue development without concern of data scalability and that will accomodate future functionality powered by complex data science.