Looking at switching specialties as a mid level dev at places like Indeed, Square, etc.

Current exp is mostly in C++ apps on Linux. Big and small, but not web dev.

Want to switch into web dev at the mid level somewhere like Indeed, Twitter, Square, etc. Are any places friendly toward people who need a little time to learn company-specific tools?

Indeed recruiter mentioned 140-170k base salary for me, which is good enough if the RSUs are good, but I put them on hold because I needed to study leetcode and felt like I'd fail interviews if I wasn't skilled up on their tech stack (Java, React, etc)