Klaviyo Software Engineer interview experience

The hiring manager round had the kind of “tell me about” style prompts where it mattered whether I could speak through specific scenarios, not just general claims.

What threw me off a bit was the API design round: they gave me code that was poorly written and basically expected me to improve it. I tried to structure my time by focusing on the functional requirements first, then moving on to the non-functional details, but I still ended up spending too long on how I would improve things rather than getting to the actual completed solution. I ran out of time before I finished, and even though