Authentication and Session Handler modules in Symfony

We are looking for an experienced developer to create an authentication and session handler system based on Symfony 1.4 Doctrine framework. 2 dummy, a login, a registration, a home page and the implemented session handling is required. We expect professional code from professional developers. Best practices, maintainability, performance, security are all keys to the project. The software should be designed properly, and include a detailed documentation. The code should be well commented and include unit and functional tests. Details will be disclosed upon personal contact. Good luck bidding!