As I was fed up with maven, ant and graddle tools I implemented my own build tool / build language.
I'd like to share it with the community so it is open sourced (Apache 2 licence) available at https://github.com/mikosik/smooth-build.
Full documentation is available at http://www.smooth-build.org/.
If you are curious what it can do and why it is better than other tools you should start with short tutorial at http://www.smooth-build.org/tutorial.html.
I happily answer any questions in this thread.
If you have open source project that is available online I can write smooth build script for you for free.