In my years as a junior dev I noticed this! The signs for me were seniors who had just aged through, but I knew more about the tech stack and problem domain or

In my years as a junior dev I noticed this! The signs for me were seniors who had just aged through, but I knew more about the tech stack and problem domain or that could not just intuit a recursive function(I was flabbergasted as I watched one of them lookup how to write one). In the years since all these devs have since moved on to management rather than more senior technical roles.