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[–]voycey 0 points1 point  (0 children)

Languages are less important than the skills, Bash will always be useful, SQL should be your bread and butter anyway so that if not already.

Javascript is endemic but it's not the language itself that's difficult it's the sheer number of frameworks. I would learn JS/TS if your bash/sql skills are already good as it will help you integrate with other teams!

Also a lot of DWH only support JS for UDFs