Yeah, it's tough to know who can actually deliver.

I know one guy (a consultant now) who I would trust to Navy SEALs parachute into almost any technical problem and come up with a real solution. Any part of the stack, from building a physical hardware test bench, debugging firmware compiler bugs, desktop software development, to a scalable web stack. These people exist, and they're not cheap.

However, it's worth noting that no one with skills like that works at Deloitte.