I applied online. I interviewed at Klaviyo (Boston, MA) in Jun 2020
Interview
Preliminary python test - use pandas to manipulate some data
Call with recruiter - discussed background
Technical interview - probability questions/coding a simulation
Take home assignment - Simulate from probability distributions, involves reading some papers, not hard but time consuming
Interview with VP of Data Science - Asked about background, also asked to implement a sorting algorithm
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Other Machine Learning Engineer interview reviews for Klaviyo
The hiring process includes an initial skills assessment, followed by a recruiter phone screen, then virtual technical onsite interviews to evaluate technical ability, collaboration, and role fit, ending with a potential offer for selected candidates.
I applied online. The process took 2 weeks. I interviewed at Klaviyo (San Francisco, CA) in Sep 2025
Interview
Three back-to-back rounds, 1 hm, 1 ML , 1 Spark. the first round is 45 mins, the other two are 1h. No leetcode coding. Answer question and discuss more based on the materials they provide.
Interview questions [1]
Question 1
How to deal with conflict? Can you describle your failure ?
I applied online. I interviewed at Klaviyo in May 2021
Interview
Same story as a lot of people here. Got asked to a coding exercise before talking to anyone. The assessment was trivial, but was vague as to what they were actually looking for. Received a rejection a day later with no feedback.
Highly recommend NOT applying here. Seems like a joke almost, and many people have the exact same experience.
This one was tough to read- thanks for taking the time to share your feedback. We'd love to hear more and are always looking to improve. Please email glassdoor@klaviyo.com if you'd like to get in touch.
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