After having gone through, what...4 airline bankrupticies...I think you'd be crazy NOT to have another job. An old DFO of mine once said that first thing you should do after your get your ATPL is get your truck driver's licence, but I'm sure math guy would work, too.
Oh by the way, if it's airline flying you're after you'll no doubt wind up in the Middle East or China but that's ok, they have math, too.
