Derived from 1 submission for ALL. Format details may vary across different teams or locations.
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The candidate went through three technical rounds covering Java, microservices, and system design, but was ultimately rejected after the hiring manager round without specific feedback.
The first technical round focused on basic problem solving and core Java concepts including object-oriented principles and microservices communication.
Move all zeroes to the beginning of an array.
Explain the differences between abstract classes and interfaces.
Explain the purpose of the hashCode method with a code example.
Explain the Singleton design pattern and how to implement a Doubleton class.
Describe various methods for inter-microservice communication.
The second technical round covered advanced Java collections, microservices architecture, REST API design, and Java 8 features including streams.
Detect a loop in a linked list.
Explain the Collections framework and the differences between HashMap and ConcurrentHashMap.
Compare microservices architecture with monolithic architecture.
Discuss if the same URL pattern can be used for different HTTP methods like GET and POST.
Explain the differences between @Component, @Configuration, and @Bean annotations.
Discuss Java 8 features including default/static methods, functional interfaces, and stream API usage, specifically filtering a list of names for vowels.
The final round with the hiring manager involved coding challenges using Java 8 streams and a discussion on career motivations and compensation.
Find the two most repetitive words in a given string.
Sort a list of employee objects by experience in descending order using Java 8 streams.
Discuss reasons for switching companies and current/expected compensation.
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