Optimizing the wingtip on a 747 actually sounds interesting, and it's the sort of thing that could meaningfully affect the world. It might even prevent more wars than the SR-71 program in terms of lessening ecological and environmental pressures.

A much worse career would be convincing regulators that new aircraft like the 737 MAX don't need any additional training. Maintaining lists of open exploits, and keeping them secret from vulnerable parties is that kind of job, where you're making the world less safe in a perversion of your ostensible goals.