Thanks for review, We have shared details of preparation on your email id, follow below links: Interview preparation guide: 1. Before coming to interview, Practice below videos on laptop and create same projects, candidate can email created project, It will be great to see if engineer have added another additional feature in the developed app. https://www.youtube.com/watch?v=tZvjSl9dswg (4 hours) https://www.youtube.com/watch?v=JgDXu4diW-o (2 hours) 2. To understand Android app development in depth, refer below tutorial series: (Advised to candidates to watch all videos and practice these before coming to interview). https://www.youtube.com/watch?v=HyU4vkZ2NB8&list=PLjVLYmrlmjGdDps6HAwOOVoAtBPAgIOXL&index=1 (10 days) 3. Prepare data structure and algorithms, can refer "Cracking the coding interview" book. (5 days, read all 16 chapters of this book and practice) 4. Understand how to design large scale app: (candidate should watch below videos and understand concepts.) Design patterns: (2 days) https://www.youtube.com/watch?v=vNHpsC5ng_E&list=PLF206E906175C7E07&index=1 Examples of few large scale apps: (2 days) https://www.youtube.com/watch?v=dUMWMZmMsVE&list=PLkQkbY7JNJuC99VDJcpQdww-4aT3QhdJv&index=1 5. Learn Java: https://www.tutorialspoint.com/java/index.htm 6. Learn android: https://www.tutorialspoint.com/android/index.htm As discussed in interview, Once you are ready Please email on ceo@karankavach.com for rescheduling the interviews, happy learning :) Regards, Keep on nurturing the society with inevitable protection. Rakesh Kumar Kejriwal CEO, CTO and Founder KaranKavach.com contact us: https://www.karankavach.com/contact-us CEO email: ceo@karankavach.com