I applied through an employee referral. The process took 2 weeks. I interviewed at Klaviyo (Boston, MA) in Jul 2019
Interview
The best interview process I have gone through. The recruiters feel genuine and are really responsive. The process is really clear so you always know what to expect next and they even give you feedback on the code you submit, which is really thoughtful. 30 minute phone call, phone/in-person collaborative coding challenge, take home, on-site to meet team and algorithm challenge.
I know several engineers who work here and have technically grown so much and they all seem to love what they do here. I ended up not taking the offer, but it was a very tough decision.
Interview questions [1]
Question 1
Describe a system you work with at your current company and draw out the tech stack.
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.
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.