One of the coding problem rounds was about solving a problem that has to do with identifying the kind of a card (debit or credit) plus the issuer, based on some provided info.
Backend Software Engineer Interview Questions
2,339 backend software engineer interview questions shared by candidates
What is one weakness you have been working on improving recently?
Write a read-write lock. Do not use ready library. What is formal form of database. Given an integer, swap bits by pairs. (1001 becomes 0110)
What is Dependency Injection and what problem does it solve?
Explain how client (user and drone) authentication works for a web backend.
Design a system to receive and store telemetry from a fleet of drones.
Take home programming assignment. Task and expectations for assignment were a little vague, but it provided a good opportunity to showcase skills.
REST API Design and Implementation
They asked about architectural decisions relating to the model and database schema while building a theoretical Ruby on Rails application.
Round 1 - Java and Mathematics Round 2 - Java core and multithreading Round 3 - High Level design and project experience
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