For the last 12 months we have been building a CRM application to manage our business which incorporates everything from sales to marketing and email. The system is currently in live use but we are looking to make some major upgrades to improve the UI, make the system run faster, add new features etc. The core of the system is built in codeigniter using a large mysql database. This is a complex build and you will need to have a very broad knowledge of both frontend and backend development. You will need to be able to work fast and push builds like a ninja!