The title should probably read "_faster_ delivery".
I am currently in the gaping maw of chaos at my second development job of my career, and I see so many opportunities to clean things up and improve readability. Maybe I am just a naive Jr. Dev, but I prefer things to be as simple as possible – even if it means more lines of code, or comments explaining the business logic (ie what it _should_ do) instead of relying on external Jira tickets.
How do you go about bringing this up in the interview process?
BTW, I find it hard to believe that "_faster_delivery" and maintainability are in opposition. Most of us would agree that maintainable systems have fewer bugs at every stage. And experience has taught us that bugs, particularly subtle bugs, take a long time to find and correct.
Get use to it, it exists in most companies. You could ask if technical debt (backlog) is actively being worked on is there a plan/vision to chip away at it etc.