Nokia Network Engineer interview experience

After the process kicked off, I ended up going through questions centered on protocols like ISIS, MPLS, LDP, and BGP, and the conversation stayed practical around how these pieces work together.

What surprised me was how much emphasis there was on working principles rather than vague theory. I was expected to explain protocol behavior clearly, and the tone leaned toward troubleshooting—walking through how I’d reason about things when something doesn’t behave as expected, and how I’d validate it. Tools like Wireshark came up as part of that “how would you confirm what’s happening?”