Alex Forrester is an experienced software developer with more than 20 years of experience in mobile and web development and content management systems. He has worked with Android since 2010, creating flagship apps for blue-chip companies across a broad range of industries at Sky, The Automobile Association, HSBC, Discovery Channel, NatWest, and O2. Alex lives in Hertfordshire with his wife and daughter. When he's not developing, he likes playing touch rugby and running in the Chiltern Hills. Eran Boudjnah has been developing apps and leading mobile teams for a wide range of clients, from start-ups (Just Eat and Plume Design) to large-scale companies (Sky and HSBC) and conglomerates, since 1997. He has been working with Android since around 2013. Eran is a developer with almost three decades of experience in developing mobile applications, websites, desktop applications, and interactive attractions. He is passionate about board games and has a 1990s Transformers collection that he's quite proud of. Eran lives in Brentwood, Essex, in the United Kingdom, with Lea, his incredibly supportive wife. Alexandru Dumbravan is an Android developer with more than 10 years of experience in building Android apps, focusing on fintech applications since 2016 when he moved to London. In his spare time, Alex enjoys playing video games, watching movies, and occasionally visiting the gym. Jomar Tigcal is an Android developer with over 15 years of experience in mobile and software development. He has worked on various stages of Android app development for small start-ups and large companies since 2012. Jomar has also given talks and conducted training and workshops on Android. In his free time, he likes running and reading. He lives in Vancouver, BC, Canada, with his wife, Celine.