Project Deep Dive, Then a Find-Divisors Follow-up

I interviewed with Citadel Securities (see my previous post) and PDT back to back. I originally wanted to post both back to back too, but something came up and I got delayed. The PDT team is different from the Citadel one. The link they sent was for a research engineer role, but both the headhunter and HR said it would be an LLM team, and it was hybrid 3 days a week, so I was really excited. But…

Shared by a candidate · reported Aug 2026. Interview formats change; use it as a guide, not a script.