03Careers
Cardinal is a small firm in one office, trading its own capital, built to last decades. We hire researchers and engineers who want to be part of that, people who'd rather go deep on a hard problem for years than rotate through it.
We don't care where you studied or what you traded before. We care what you can figure out, what you can build, and whether you'll still be curious about it in ten years.
Open roles
All in person, in Washington, DC. Top-of-market compensation, a research budget you control, and problems that are yours for as long as you want them.
Nothing that fits? Write anyway. Most of the people here arrived before there was a role for them.
The process
We'd rather see what you can do than hear about it, so most of the process is work, not interviews.
01
An hour with someone who'd work next to you. Bring something you built or figured out, and be ready to go deep on it.
02
A real question on real order-book data. Take a week. We tell you what a good answer looks like so you can spend the time on the work.
03
Present the study, defend it, then sit on the desk through a session. We're hiring a colleague, not a score.
A decision within three weeks, and a reason either way.
Apply
Put the role in the subject line. Attach a paper, a repo, a study you ran, or a thing you were wrong about. We read every application ourselves.