[nevon]

That's still your code ("your" meaning the team that owns the product). Who else would own it? The person that left 3 years ago?

[Firmwarrior]

The problem is that he has a big pile of half-working spaghetti code that he never has time to touch except when it malfunctions in the middle of the night

The problem behind that is that Amazon is a completely dysfunctional corporate hellscape. Like TFA said, you just don't have time or resources to actually fix things

[dimmke]

Also usually it’s in Java in an internal framework based off Springboot and I’m a front-end developer with no experience writing backend services.

Totally normal. Not crazy at all. Take ownership.

[Firmwarrior]

You should join Amazon and do that, and you can come back here and apologize in a couple of years when you get pipped for wasting too much time on legacy code