Klaviyo Full Stack Software Engineer Intern interview questions
Updated Apr 3, 2026
based on 1 rating
Difficulty
Difficult
Experience
Very positive
How others got an interview
100%
Applied online
Applied online
Interview search
1 interviews
Klaviyo interviews FAQs
Full Stack Software Engineer Intern applicants have rated the interview process at Klaviyo with 4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 42% positive. This is according to Glassdoor user ratings.
Candidates applying for Full Stack Software Engineer Intern roles take an average of 42 days to get hired, when considering 1 user submitted interviews for this role. To compare, the hiring process at Klaviyo overall takes an average of 23 days.
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I applied online. The process took 6 weeks. I interviewed at Klaviyo (Boston, MA) in Sep 2025
Interview
3 hour virtual superday, 2 technical rounds, 1 behavioral round. The first technical focuses on debugging a broken codebase. This was followed by a standard behavioral, where they look for how you fit within Klaviyo. The last behavioral round involved adding new features to an existing web app.