I'm looking for honest advice from people who've dealt with difficult coworkers and office politics.

I work in IT. I had a really unpleasant experience with a senior colleague and another coworker. I felt they were making things difficult enough that I would eventually resign. It affected how I see and trust this senior colleague.

Now we're working together again, and I'm facing a different problem.

He has around five years of experience and owns certain development tasks. I've noticed issues in his implementation and have explained where I think he's going wrong, but he doesn't seem willing to accept my technical feedback. The work then involves repeated testing sessions, debugging discussions, and hours of my time.

The frustrating part is that I feel there's an expectation that I'll help carry the technical workload, even when the task isn't mine.…