Comment by nuancebydefault

I've been a few times in a situation where I needed to make significant changes in a huge codebase with lot's of tests but also with a lot of corner cases, on my own.

I've spent blood sweat, tears and restless evenings scrolling and ctrl-f-ing huge build and test logs to finally accomplish the task.

But let's take a step back.

So they assign you to get that done. You're supposed to be careful, courageous and precise while making those changes without regression. There's very little up-to-date documentation on the design, architecture, let alone any rationale on design choices. You're supposed to come up with methods like Mikado, tdd, shadowing or anything that gets the job done.

Is this even fair to ask? Suppose you ask a contractor to re-factor a house with old style plumbing and electricity. Will they do it Mikado style, or, would they say - look - we're going to tear things down and rebuild it from the ground. You need to be willing to pay for a designer, an architect, new materials and a set of specialized contractors.

So why do we as sw engineers put up with the assignment? Are we rewarded so much more than the project manager of that house who subcontracts the work to many people to tear down and rebuild?