3 phone calls initially, one of them tech. Then a online tech assessment. Then 6 straight interviews with two people in each one. Overall, it was a massive waste of time. During the 6 straight interviews, got to meet a bunch of people that had either no idea who I was or what I was there for. Having this many rounds is a massive red flag and I should have trusted my instinct.
Interview questions [3]
Question 1
describe verbally a random system design you'd make from an obscure drawing
We value your feedback and appreciate the time you took to interview with us! We're disappointed to hear about your interview experience, and we've shared your feedback with our team so that we can keep improving our interview process.
Other Software Developer interview reviews for Klaviyo
HR screening. Asked me some questions about software basics and sent me a code signal link. Asked about how I utilized AI in day to day work and how much design work versus coding task
ICF Codesignal, recruiter screen, and then final interview. Codesignal was easy as long as you prepped for it, there are many examples of ICFs online. Recruiter screen was normal. Final interview was not DSA related. Mostly related to the real experience of being a swe.
Application
I applied online. I interviewed at Klaviyo (London, England) in Mar 2026
Interview
The interview process was generally well structured. I had an initial 30-minute recruiter call, followed by an assessment task and a hiring manager interview. The final stage consisted of three separate one-hour interviews covering different skill areas, with two interviewers in each session. One focused on frontend skills, while the others leaned more toward backend and broader technical competencies. Overall, the experience was positive, though having a three-hour final stage in a single day felt quite intensive.
Interview questions [1]
Question 1
Do a code review and fix what might be wrong or how you would fix it.
