They're smart enough to know how create filters that don't miss people with competitors experience on their CVs. In fact, they actively seek those people out o

They're smart enough to know how create filters that don't miss people with competitors experience on their CVs. In fact, they actively seek those people out on LinkedIn and anywhere else they can find them. HFT jobs are high value / high comp jobs, so Jane Street and their cohorts put a lot of effort into recruiting. This includes their resume intake system, internships with desirable colleges and professional outreach.