Zerion Backend Engineer interview questions

I was approached by Talent Acquisition after applying for the role. They scheduled a quick 15-minute call to align on expectations and walk through the job description. After a mutual fit, I moved to the first interview round with the Engineering Manager—again aligning expectations, learning more about the role and company values, and discussing how I could contribute. Next came the technical assessment: a LeetCode-style exercise plus a Web3 role-playing scenario. It was stress-free and genuinely fun. The problems were incremental, so I could develop my thinking step by step. The Web3 section was basic; anyone who has worked with or studied crypto fundamentals shouldn’t find it challenging. After that was probably the nicest round: the team interview. It was a very relaxed conversation with the whole team to check chemistry and learn more about the company while sharing some of my background. This stage felt different from typical processes—you get comfortable and even a bit intimate, which is unusual for business-only interviews. You can feel the amount of work, thought, and care the company puts into this step. It’s a real investment: you’re talking about one work hour from five or six employees per candidate. Finally, I met the founders (CTO and CEO). I prepared thoroughly and expected a high-tension conversation, but they were welcoming and chill. We even shared a few laughs. The scope was broader than work—we also talked about daily life, hobbies, and past experiences. There was also a reference-check stage, which felt a bit daunting but reasonable. They held quick 15-minute calls with a few of my current colleagues to learn more about me. I can’t speak to the details of those calls, but my colleagues told me they enjoyed the conversations. One thing to keep in mind: if you haven’t discussed your plans internally, reference checks with current colleagues can inadvertently signal that you’re considering a move. In my case, I’m close to my team, so it wasn’t an issue, but it could be for others. Overall: The interview process itself made me most excited about the company. I met many of my potential future teammates, which felt fair and mutual—they got to know me as well. Any lingering questions were answered quickly by the recruiter, which helped keep anxiety low. If your values align with the company’s, I highly recommend applying for one of their open roles.