Florian Bertholin is a software engineer and lead developer. After having studied Computer Sciences in France and in the USA, he now lives in Geneva, Switzerland.

He has been working with Ruby since 2009, and he loves to design High-Scalable Architectures and High-Performance Web Applications.

You can find him online at http://florianbertholin.com.

Vladimir Pouzanov is a systems engineer and mobile development enthusiast. Vladimir spent countless hours hacking different mobile hardware, porting Linux to Palm? devices, and toying outside the iPhone sandbox. He has been doing professional iOS development and consultancy since the first Apple iPhones were available. Later on, Vladimir switched his professional interest to systems management and engineering, but he keeps a close eye on the mobile and embedded world of iPhones, Android devices, and Arduino-based gadgets.