They asked mainly what I was doing in my previous companies, my experience with optimizing Ruby.
Rails Developer Interview Questions
631 rails developer interview questions shared by candidates
What is N+1 problem? How do you solve it?
No questions obviously
System design question.
What is the difference between Ruby’s Hash and ActiveSupport’s HashWithIndifferentAccess?
Difference between Modules and Concerns?
What is your biggest weakness?
Explain how everything is an object in Ruby.
1. First round - find duplicated elements in array and other similar problems 2. Second round - design elevator.
what is system architecture?
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