[EDIT] - Going to insert a disclaimer here. I'm in Vegas. You're not. The construction standards may vary, and I can only talk about my personal & professional experience, which may not pertain to you, so you'll want to verify that the construction means and methods are comparable.
My personal opinion as a contractor - if you find a GC to do this, you have to be very leery. If they're willing to do all that, they're probably willing to take your money and walk off the job. At that point, what do you do? File a complaint and admit all that you're doing in front of open court?
If you found a contractor who was a survivalist, then maybe they'd be willing to take the risk and help you, but they're going to charge out the rear for it because of the risks they'd be taking.
On to specifics:
You would essentially have to build the foundation twice. First, you'd have to put in your underground utilities, grade & form your slab with all of the reinforcement (mild rebar & PT cables). Then, once it passes inspection (check with your building department if you need a special structural inspection, which is usually handled by an outside engineer), you'd rip it all out, dig like mad, form / pour your footings, stack your block, then form your deck, reinforce it, then pour it, and hope to hell that the inspector doesn't decide to make a "surprise" inspection. If you burned as fast as you could on that, maybe three weeks of an inspector happening on your job and able to see what you're really doing.
Don't even ask an engineer if they would design this, it violates about a bajillion ethics rules that could cost them their license, and there is no way that they would jeopardize their license for you. Maybe for Caesars or MGM or some other major corporation that gave them tens of millions each year in contracts, but not for you.
So when you pour your suspended slab, you now have no way to remove the forms underneath, so you'll have to buy those, and you'll have to set up your reinforcement so that you leave a block-out (an area where the reinforcement doesn't run) so you can chip it out later.
If a special inspection is required, they will see what you're doing in about 3 seconds, write up a Notice of Non-Compliance, run off of the job and fax it in to the building department, if they don't call the building inspector as they're driving off the jobsite. That's because the special inspector MUST be onsite during the concrete pour. You may just pour it anyway and get NNC, at which point the building department will red tag your job and force you to go back and perform core drills (removing sections of the concrete for strength testing) under the supervision of the building inspector and the special inspector, which will show that you've essentially poured a suspended slab.
If you make it to this point, you're almost home free. All you have to do is make sure that any excavations around your home, like to hook up the sewer or water, don't expose your basement walls, because if an inspector sees that, they're going to start asking questions.
Basically, I wouldn't recommend it. You're depending on too many people to keep quiet and to skirt ethics rules or outright violate the law.
If you asked me to do it, I'd run the other direction from you. Frankly, I'd be scared to death that you were a trap set by the building department and the DA to shut me down for doing non-permitted work. Don't laugh, I've seen that sting done a lot of times in the Vegas area.
