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I recently joined a team of 20 people split across traditional software development, support personnel, storage engineering, security engineering and more and we're essentially supposed to sysadmin a large number of systems working ~70 hr weeks. The old team we're replacing did not handle well in this environment and it seems like my team needs to focus more so the storage engineers solve storage engineering problems, coders do coding etc so we can bail each other out of this hole faster. Any thoughts on how we can go about this? I'm working ~50hr weeks max and still perplexed at how these 70 hr weeks happen.

what are the best effective resources available out there to improve my English in the tech field. I am an immigrant and English is my 3rd language. My not so good spoken English is hurting my career a lot