Low level design two rounds High level design one round Questions about previous projects and the biggest challenges I faced till now etc. In LLD they will look for design patterns like event based architecture etc. In HLD I was asked to build a recommended products (people who bought this also bought) widget
Second interview: A technical assessment where I had to refactor an existing codebase consisting of two APIs that depended on each other.
explain your previous working experience
Round 1 Difference between equals() and == in java? Questions on java streams. How to design springboot application - explain layered architecture Eager and Lazy loading question in springboot and react Pagination and sorting JPA repo related questions Round 2 Coding question - Insert, delete, get random, minimum element within constant time. Use List (linked list implementation) and Map. System design question - design a live dashboard which shows data coming in key value pairs metrics from cell towers and detect and notify incase of any anomalies. Also get recent data based on timelines - Use Cassandra DB for key value pairs data storage, async processing for anomalies detection, apache spark DB for retrieving data based on timestamps.
what is the different between NoSQL and SQL databases
How does the garbage collector work in Java?
Backend take-home (I signed a non-disclosure) where you need to be familiar with using a code editor
What should have been asked but never did - how good is your "business acumen"?
Past projects you have worked on
How would you make a slow query faster?
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