I applied for the Graduate Seismic Analyst position in Calgary, Alberta, in late November. In the first week of January, I received a link to the first round of interviews, which was a one-way video interview. It consisted of three high-school-level math questions, along with a few brain teasers. Given my engineering background, I found this part relatively easy. The questions were similar to those already mentioned here, so I recommend reviewing them in preparation.
After completing the first round, I was invited to a second-round interview with managers. I was asked to prepare a 10-minute presentation about my background, which went well. They showed great interest in my thesis work and master's research, asking numerous questions. Following the presentation, they shared their screen and asked me a few math and physics questions. The interviewers were very friendly, and the conversation flowed smoothly.
I was then invited for an in-person interview at the Calgary office, and they even offered to cover my travel expenses. Since I was already based in Calgary, this wasn't necessary. The third-round interview included both new and previously asked questions about my resume and research. Toward the end, they presented two physics-based questions relevant to their work. While I took my time answering, I eventually responded to both.
I was informed the following week that I had not been selected. The communication throughout the process was prompt, and the interviewers were professional and welcoming. I believe everything went well on my end, but they may have been looking for someone with a background in geophysics, which I do not have.