I applied online. The process took two weeks.

First, there is a CodeSignal test. This is for 90 minutes and felt frantic, with way too many features and code paths to implement.- Then, there is the Karat LLM interview, which is 50 minutes.- Finally, there is a full day of the regular interview loop.

For CodeSignal, it was implementing a cache key store with timestamps. It started with basic setting and getting, then evolved into more advanced code. There were four different parts, and I was writing a lot of code for this.

For the LLM interview, you work with a company called Karat. You are given a VS Code-like workspace and an AI to help. You have fifty minutes. They then dump a large project into your space. For me, it was a bus route simulator.

I was then asked to implement a feature: have the system prioritize Priority Pass people. I used the LLM to track down the code and implement it, but it was difficult to test in code that was unknown to me. The next feature was implementing wheelchairs for the bus, which requires special capacity checks.