SRE interviews at HFT firms

What are the relevant questions asked at HFT firms for SRE interviews for someone with less than 3yoe? I'm looking at roles at Citadel Sec, Jump trading, etc. I'm expecting something along the lines of python, understanding of Linux kernels, networking, system design, latency observability, etc. Any questions related to cloud? IaC, Aws? I heard citadel has some lot of cloud infra. Thanks.