I'm not the person you asked, but from my observation there is demand in the financial industry for math/physics/engineering PhDs serving as some combination of

I'm not the person you asked, but from my observation there is demand in the financial industry for math/physics/engineering PhDs serving as some combination of quant, business analyst, and QA. They typically start as summer interns while working on their doctorate and are hired when they graduate. The internship is effectively an extended interview process.