There were 2 technical rounds In the first round they gave couple of coding questions. Questions asked in the second round were technical as well but more in depth. Interviewers were great and helped me whenever I was stuck.

Introduction OOPs concepts RSpec Version control Caching Built-in libraries Access modifiers Classes vs Modules Exception handling Git merge vs Rebase Garbage collection While testing jobs what all metrics you consider Eager loading Lazy loading Streamline paginate On click paginate N+1 queries Put vs Patch Data Types in ruby