“Under the hood” is fancy talk for doing more than put text on screen. Whether or not that’s needed depends on the employer.
BTW, nobody is an expert within just 3 years. That is a key indicator of a Dunning-Kruger moment that becomes clear by drilling down just a bit into key performance indicators from research and experience.
> “Under the hood” is fancy talk for doing more than put text on screen. Whether or not that’s needed depends on the employer.
This isn't a satisfying explanation, since "putting text on the screen" can be a pretty complicated task. My limited understanding of web development is that the conceptual model is actually a decent bit more complicated than non-web-developers give credit, and React seems like a prime (if somewhat self-inflicted) example of that.
A trivial example of someone being an expert in 3 years is being the original creator of a thing. Time is a sufficient factor, but I don't think it's a necessary one (and we acknowledge this implicitly by acknowledging that people learn at different rates).
As a web developer I can promise that putting text on the screen is not complicated, though shops tend to find a way to bury themselves in abstractions and bad decisions that anything can become impossibly complicated and take 10+ seconds to execute.
As the creator of a once extremely popular productivity tool I can firmly attest that being the creator of such tool is not a sufficient qualifier to elevate one to “expert” of the given problem space provided just 3 years time.
BTW, nobody is an expert within just 3 years. That is a key indicator of a Dunning-Kruger moment that becomes clear by drilling down just a bit into key performance indicators from research and experience.