What type of programmers do need to learn data structures?

As a frontend developer coming up with a basic data structure (say an array) to store some data you receive from the backend is common sense. But do you need as a frontend developer to read / learn on data structures more than maybe how queues or how lists work?

Besides programmers that work on software such as search engines or software were either memory is very limited or speed is extremely important, what other programmer types do need to learn data structures.

Or maybe the better and easier to address question is: what programmers don’t NEED to learn about data structures?