Symfony Developer

The client is looking for a PHP developer with experience in Symfony 2. The client has several customer projects that don't have a dedicated dev team working on them, but nevertheless need new features or bugfixes every now and then. All projects have a dedicated project manager, though, who works directly with the freelancer.
The freelancer should be able to work 20-30 hours per week for at least a few months, as the client prefers a long-time cooperation. Remote work is partly possible.