Rivu ChakrabortyRivu Chakraborty is a Google-certified Android developer and a senior tech member at the Institute of Engineers (India), and also has certifications in Scrum. With over 5 years of experience, he is currently working as a senior software engineer (Andoid) at Indus Net Technologies Pvt. Ltd.He considers himself a Kotlin and Android enthusiast and a Kotlin evangelist. He has been using Kotlin since December 2015, so he has around 2 years of experience in Kotlin at the time of publishing this book. As a part of his mission to spread the use and knowledge of the Kotlin language as much as possible, he created the KotlinKolkata user group--one of the most active Kotlin user groups throughout the world, and he is the Founder Organizer of KotlinKolkata.As Rivu believes that knowledge increases by sharing, he writes a lot of tutorials on JavaCodeGeeks, AndroidHive, and his own site, which you can visit to read his tutorials and learn more about him. Read More Read Less