Recruiter messaging me about a job opportunity.

What's this? An interesting job building web apps for high performance monitoring of generalized novel hardware systems... Right up my street. Hardware, check, web, check, visualizations, yup, performance, yes please!

Oh... "3+ years experience with React and CSS-in-JS". Ah.

You didn't actually mean you were serious about performance did you?

I do not, nor would I ever, recommend you try and build high performance web apps with React. Bye!