Hi,
I am a developer with more than 2 years of experience. I have created more than 20 apps and games for Android. More than half the apps I created are games. Those include Fortress Defence, BlackJack, Guess the Word, Logo Quiz, Test your memory, ColorMania and other. I think that Fortress Defence is closest to the game you want to be developed. Some of those games are native and the others are made with AndEngine.
I would like to know more about your game and we can then talk about the budget and time. I think it would be better to use AndEngine for your game because it's great for animations and particle effects, but we will decide this together, of course if you decide to give this project to me.
Best regards,
Kire