Maybe to some extent? The teams doing proper HFT are all dealing with C++ or hardware. This is true across the industry AFAIK at places like HRT, Citadel Securi

Maybe to some extent? The teams doing proper HFT are all dealing with C++ or hardware. This is true across the industry AFAIK at places like HRT, Citadel Securities, Jump, etc. Some of these might use some Java for things that don't require low latency but those aren't really considered HFT.