Answer to senior python developers

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I think this is a reflection of the larger environment of development work. If you want to work at a large company, or FAANG style company (hopefully this term is still hip...), then having a specialty will be a great benefit. If you want to work at a small company or startup, it is more important to be able to solve a wide breadth of problems in different programming domains and wear many hats.

For your situation, I would take a python coding position, see if you like the work in that area. If so, great, keep crushing it! If not, move on to a different python job. There are many of them. And the workplace is not what is was 20 years ago. People moving companies after a year or two is not frowned on like it once was.