Companies do not trust Shell. They think we are a bunch of do nothing talkers who are skilled in an overly narrow area. They do respond to your personal brand or personal reputation. If you've presented, published, worked with, or have done something to show you really do know something, then you'll get snatched up. If you have a reputation in Shell but not externally, then well you're outta luck plan on starting out like a JG4, but in another company.
As for valuing the SMEs it's a lot like Dunning Kruger, everybody claims to be an expert. You've gotta prove it. And folks don't automatically assume Shell = technical excellence. Besides there is no way to check TA or SME, so anybody can put that on their resume.
Try the majors/near majors first, you'll be disappointed with smaller companies. Going with a company that is too small feels like you're on the middle school junior varsity team instead of the high school varsity team.
Expect typical jobs to be 150-220k, you'll see quite a few of those... but they're not really looking for an SME. You want one of the advisor roles or VP roles but there aren't many of those out there figure 1-2 every 4 months and a lot of competition.