Daniel Hindrikes is a developer and architect whose passion is for developing mobile apps powered by the cloud. Daniel fell in love with Xamarin in its early days, when he realized that he could use C# even for iOS and Android apps, and that he could share code with the Windows applications he was building. But Daniel started to build mobile applications long before that: he built Android applications with Java and even Java ME applications (a long, long time ago). Daniel enjoys sharing his knowledge, for example, by speaking at conferences, blogging, and recording the podcast The Code Behind. Daniel works at tretton37 in Sweden and has experience of working with both local and global customers. Johan Karlsson has been working with Xamarin since the days of MonoTouch and Mono for Android, and it all started with writing a game. He is a full-stack developer, currently focusing on mobile applications using Xamarin. But he has, in the past, worked a lot with ASP.NET MVC, Visual Basic.NET, and C#. He has also created a whole bunch of databases in SQL Server over the years. Johan works at tretton37 in Sweden and has about 20 years experience in the trade of assembling ones and zeros.