I applied online. I interviewed at CNA (Chicago, IL)
Interview
A rigorous three-hour interview process: first a case study, followed by a data structures interview, and concluding with a system design round to assess technical depth and problem - solving ability.
Interview questions [1]
Question 1
They asked me to design a real-time system that processes millions of streaming events per second, ensures sub-millisecond latency, and remains fault-tolerant under sudden traffic spikes. How would I architect it end-to-end?