Erik has 10 years' experience as a software developer, teacher and writer – focused on mobile application development. He was part of the team at Sony Mobile during the first Android projects in the Xperia series, and later worked as a research engineer developing new features for smartphones. He is the author of 'Android Programming: Pushing the limits' and the 5th edition of 'Android Recipies'. After leaving Sony Mobile, Erik started as an Android developer for Spotify – working with platform design, release management and test automation. Erik can often be found speaking at various developer conferences on mobile application development and has also been a teacher for both experienced and new developers alike. He's currently working as a freelancing mobile contractor in Stockholm.