Position: Android developer
Category: Android
English level: upper
Years of experience: 4

Bill Phillips, Chris Stewart, and Kristin Marsicano, "Android Programming: The Big Nerd Ranch Guide, 3rd Edition"

Steve McConnell "Code Complete: Second Edition"

Robert Martin "Clean Code"
Android developer with 4 years of experience 
Strong knowledge of object-oriented programming and its principals. 
Strong knowledge of developing android applications from scratch and refactoring already created apps.