Do I need to learn Data Structure as a developer?

Hello everyone!
I have a question for those experienced developers. I was participating in another forum where many junior developers ask for advice or ask questions for those more experienced, and a question that is coming in my mind is the following: “Do I really need to learn Data Structures as a dev ?

Programming involves manipulation of data. That data is stored inside of … data structures! So, yes, you need data structures.

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I agree with Jeremy but it is possible to write code without understanding data structures at all. The job is called a user interface designer. (They just focus on the user interface alone and they don’t worry about the backend software, as they just prototype interfaces. However I feel fairly sure that this role is very very rare in the worldwide market and so if you aim for that role you may never actually get employed)

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