Greenlight Trading (Chicago, ???)
We're one of the many, many HFT startups in Chicago; on the developer side, we're looking for C/C++ people with significant networking expertise or those with hardware experience.
We're also in the market for individuals with general HPC/networking expertise on the IT side of things.
Drop me an email if you're interested: green at glt-llc.com
Ask HN: Who is hiring? (September 2013)