There are a number of advantages to hiring a GTK+ developer. Firstly, GTK+ is a very popular toolkit for developing graphical user interfaces (GUIs), so there is a large pool of potential candidates to choose from. Secondly, GTK+ has been around for many years and is very well-documented, meaning that new developers should have no trouble getting up to speed with it. Finally, GTK+ is cross-platform, so your software will be able to run on multiple operating systems without needing to be rewritten from scratch.