As an engineer, I consider all those those very much my job. "Negotiating against" scope creep maybe not quite, but it is my job to provide decent time estimat

As an engineer, I consider all those those very much my job. "Negotiating against" scope creep maybe not quite, but it is my job to provide decent time estimates for expanded scope so they can decide if it's worth it. To be fair, I'm coming from a place where I have familiarity with pretty much our entire platform. If I were new, or delving into some aspect I haven't worked on before, I'd expect some understanding that it's going to take me time to familiarize myself with it, but I will familiarize myself with it in order to work on it. If the PM is an expert on that area, they should be willing to take the time to answer questions.