Sponsor: Do you build complex software systems? See how NServiceBus makes it easier to design, build, and manage software systems that use message queues to achieve loose coupling. Get started for free.Depending on your location and the amount of opportunity may ultimately decide which side of the fence your on. For me, understanding why a tool/framework exists and the problem is solves is much more important than understanding how to use a specific tool/framework. Anytime the hiring discussion comes up, I am always reminded of this. While do people classify themselves this way in a resume? Django Developer? I guess if you only want to develop in Python using an MVC framework, then sure. But doesn’t this tend to lead to “When all you have is a hammer, everything looks like a nail”. The understanding of a pattern or practice is transferable between programming languages and frameworks. NHibernate or Entity Framework? StructureMap or Unity? Who cares! You probably won’t touch the delta anyway.