[jacob9706]

Legacy code is always frustrating. I had to pick up Delphi at one point to fix a bug in an application who's only job was to relay specific windows messages (essentially a broker).

5 sold days getting the environment setup (every dependency had to be in the PATH), 20 min to make the change then another 3 days getting the installer build environment setup.

[jacob9706]

But don't conflate tough with what frustrates people. I spent 2-3 years designing and building 3D CAM software that presented MANY challenging problems from abstracting platform API's to optimzing toolpaths for cost effective manufaturing.

Not once did I get frustrated with the learning or implemention process. The frustration in a sr devs life (in my experience) usually comes from uper management putting "really cool" features on the back-burner to never be seen again.