It sounds like you have a pretty good idea of who you are and what you want, so I doubt you would have a problem finding meaning in your life even if you hated your job. You're probably not destined for a mid-life crisis like this, and it's not universal by any means.
But there are a lot of folks like OP who were focused hard on getting a job at Google and making boatloads of money and never took the time to figure out what they wanted in life besides a high paying job. For people in that position, I would say keep the unfulfilling job, let it be unfulfilling until you know what drives you, and figure out what you want in life. Then you'll be in a position to decide whether to seek meaning at work or not. I personally chose to find it outside of work, which has made the career bumps a lot easier to handle because my identity isn't wrapped up in my job.
But there are a lot of folks like OP who were focused hard on getting a job at Google and making boatloads of money and never took the time to figure out what they wanted in life besides a high paying job. For people in that position, I would say keep the unfulfilling job, let it be unfulfilling until you know what drives you, and figure out what you want in life. Then you'll be in a position to decide whether to seek meaning at work or not. I personally chose to find it outside of work, which has made the career bumps a lot easier to handle because my identity isn't wrapped up in my job.