Only junior software engineers hate other peoples code. The progression of a skilled software engineer starts with writing code, then reading code, then writing code in the context of others code. The more you work the more crucial it is to be able to operate in a zone of non ownership in the code base, your value really unlocks when you can sniff code and improve it without rewriting it. At this stage 30y into my career I can step into a completely foreign code base and make material improvements quickly in situ, and sometimes have to do it several times a day. I don’t mind other peoples code - in fact I learn an awful lot of cool things spelunking!
I tend to avoid the “let’s rewrite it” engineers - they’re usually going that route due to lack of practice and skill in developing software. There are times for sure a rewrite is necessary, but IMO it’s sort of like blaming the compiler for build errors. Usually it’s not the compiler, it’s you. But rarely there’s a compiler bug and you’re justified in asserting it as such. Likewise, rarely does code need to be rewritten, you are just unskilled at code surgery - so practice. When you have practiced enough you’ll see that the initial revulsion you felt at their code was mostly your brain reacting to the unknown. The people who wrote that code are often as good or better than you, and understood the domain a lot better if you’re new to the code base. Show a bit of respect for those who came before and learn to learn.
I tend to avoid the “let’s rewrite it” engineers - they’re usually going that route due to lack of practice and skill in developing software. There are times for sure a rewrite is necessary, but IMO it’s sort of like blaming the compiler for build errors. Usually it’s not the compiler, it’s you. But rarely there’s a compiler bug and you’re justified in asserting it as such. Likewise, rarely does code need to be rewritten, you are just unskilled at code surgery - so practice. When you have practiced enough you’ll see that the initial revulsion you felt at their code was mostly your brain reacting to the unknown. The people who wrote that code are often as good or better than you, and understood the domain a lot better if you’re new to the code base. Show a bit of respect for those who came before and learn to learn.