Why are you defining yourself by your job? First of all, you work at a Big 4. You're already in the top <5% of engineers in terms of prestige. You can probably

Why are you defining yourself by your job? First of all, you work at a Big 4. You're already in the top <5% of engineers in terms of prestige. You can probably easily get an interview at >90% of companies that are hiring. Second, even if you're only able to get an offer at some "unprestigious" company - who cares? You're more than a job. You're a unique individual with a unique perspective and a ton to offer to this world. You got into a Big 4. That is not an easy feat, and clearly you are a smart individual. Recognize that you're in control of your own life. If you want it bad enough, then work for it, and you will achieve it. I don't know what type of work you're doing, but I'd wager it's probably not unsolved cutting edge theoretical physics type work. That's fine. My point is that you can prepare for it. And if you don't want to prepare for it - don't. Who cares, it's your life, live it how you want.