Submit CV through their application portal, they do it on a rolling basis. A week later, received an online assessment which was probability and finance. Then received an interview couple days later.
I applied online. I interviewed at Susquehanna International Group
Interview
Make you complete a test which didn't have a single question remotely close to equity research. Interview wasn't difficult but only contained 1 equity research related question out of the dozen asked. Don't know what they're looking for but I guess its someone who knows just about nothing about the they job applied for.
It was a phone screen with HR (part behavioral, part probability questions), a take-home assignment (modeling and writing), and then a Super-Day with a handful of people: a couple of associate, a couple of Analysts, DoR, Strategist