24 Hrs coding challenge. HR interview Telephonic interview Onsite interview I applied online and I got a 24 Hrs coding challenge next day. 24 Hrs coding challenge was related to consuming their REST URLS and implement some Algorithms. I developed a NetBeans maven based web project using custom MVC (Servlet centric approach), used Jersey client API's, URL API's, some business service components, Controllers and presentation pages. I was selected in 24 Hrs coding challenge. Next step was HR telephonic interview - It was 30 mins non-technical interview. More focused on their company culture and core values. I was selected in HR telephonic interview. Next step-A technical phone interview with 3 Technical people- They asked me about my previous and current projects. Some basic Java questions- Interfaces, Abstract classes, Some design patterns some programming in a Shared Document. Exception handling Some SQL related questions & SQL Queries. One program was one basic series program- I solved recursively. They asked me a little bit about breaking condition and time complexity. Questions related to overloading and overriding. Basics of Object Oriented Programming. Some String related questions- Reverse a String Database - Some questions related to Database normalization and Some database quarries. My interview went well and interviews told me my interview was good and they want to see me for F2F interview and HR will contact you for next steps to come to Vegas for F2F. I was excited because everything went well. Unfortunately I got a rejection email. I tried to contact them but there was no reply from their side. During telephonic interview there was heavy disturbance in the communication line. It was very difficult for me to understand what they were saying. ________________________________________________________________________________________ For 24 Hrs coding challenge- Focus on architecture of the application before writing the code and spend some time on Algorithms, make components independent and reusable, create a documentation for APIs usage, add description of components and usage in your project in the document. Write your code as simple as possible. For String related questions Split function. Reversing in 3 ways , Looping, use a method of StringBuffer and the best solution implement your own Stack Data Structure. For Database related questions-Focus on Limit, Union and Sub Queries.