By contrast I have not worked anywhere that engineers originated tickets. And thankfully, only one place that used Jira (but the engineers didn't interact with it).

Tickets came from the product side, after being evaluated and prioritized. Engineers got involved with estimating effort (in "points") and doing the actual implementation of course.

you're one of the lucky ones.

usually in most when engineers tend to create their own tickets - it's for useless shit like improve x, clean up y etc.

very few people have worked in places with high agency - where you work with a higher up & create a feature/product line that has customer impact. startups are one of the few places I can think of with high agency.

My last job was like that, it was miserable having no agency. The whole team was from fang companies and were all ok with the tell me what to do dynamic.

Do you think it's acceptable to do the work of multiple full time positions? I can't imagine it's very sustainable, nor healthy for you (both body and soul).