One gotcha with Kotlin is that because it's developed by JetBrains, which is a Czech company with a lot of developers in Russia, it's a no-go for US Defense or Federal Government software. This is not, on its own, a reason not to learn it. But since I noticed that you currently work with the US Air Force, and that experience might be beneficial to you getting Defense contract or Government jobs, you should know that you're not going to find a posting for a Kotlin developer there.
Interesting. I didn't know that. I thought Kotlin was developed and supported by Google. After I retire from the military in my current trade idk if I'd want to continue in that line of work in a new field you know? I joined the military fairly young and you give up a lot of freedoms working for the DoD and FAA. Though the grass is always greener on the other side and I'm sure you give up a lot of freedoms working for any corporation.
You may be conflating Kotlin with Go, which was developed and supported at Google.
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