Wärtsilä·Software Engineer

Wärtsilä Software Engineer interview experience

No offer

Medium

Positive

Belgrade, Central SerbiaPosted Jul 2025 · Candidate report, summarized by Dataford

After an intro to the project side with the project manager and developers, the conversation quickly turned technical.

I introduced myself, then the questions went hard into C++ topics. They kept me on OOP and general C++ fundamentals, and the DSA questions pulled in data-structure thinking rather than just recalling syntax.

The coding part came after roughly half an hour of questioning. They moved me into a set of coding tasks, and the interview felt like it was designed to probe how I reasoned under pressure, not just whether I could produce a final answer. What threw me off was how deep the C++ coverage went—things like multithreading behavior and what can happen when atomic assumptions aren’t there, plus

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