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full stack developer should be proficient in all of the above
and also knowing NoSQL seems quite important as it seems it becoming more and more used
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further reading about Fullstack developer definition
https://www.davisnolan.com/what-is-full-stack-definition/
https://medium.com/@asqrd/the-real-meaning-of-full-stack-developer-59472dd32c18
https://medium.com/swlh/the-full-stack-developer-is-a-myth-4e3fb9c25867