Social game

A startup company in the making is looking for an excellent full stack developer to join our team.
We have tested the potential of our social game with a Beta version, and the responses were even better than expected.
We now want to take our game to the next level.

Requirements:
Experience in designing and building complicated systems - Must
A passion for clean-API design, modular and testable code
Proficient understanding of code versioning tools, such as Git
Great communication skills
Mobile app development - Advantage
Integration with Facebook/Google+ - Advantage