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      Klaviyo

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      Sr. Software Engineer Interview

      Mar 5, 2025
      Anonymous interview candidate
      No offer
      Positive experience
      Easy interview

      Application

      I interviewed at Klaviyo

      Interview

      Round 1: Coding Assignment (CodeSignal) A take-home or timed industrial coding challenge from code signal Round 2: Hiring Manager Interview A conversation with the hiring manager to discuss your background, interests, and alignment with the role. Onsite Rounds: Round 3: Deep Dive – Work & System Design Discussion A technical deep dive into your past projects and contributions. Be mindful of not just the architecture, but also why some decisions were made. Round 4: Leadership & Behavioral Round A structured behavioral interview to assess leadership, teamwork, and problem-solving in complex situations. Focuses on past experiences, conflict resolution, and decision-making skills. Round 5: API Design & Best Practices (Coding Round) A practical coding session, not purely algorithmic but focused on designing and building a small API/system from scratch. Asked about scalability, maintainability, and software design principles. Round 6: System Design Enhancements Given an existing system design, you’ll be asked to analyze it and propose improvements. Expect discussions around scalability, reliability, trade-offs, and edge cases. I guess I failed at this step, since it was an unknown with this style of interview. Great people involved and were very accommodating.

      Interview questions [1]

      Question 1

      Conflict was asked twice, how did you resolve conflict.
      Answer question
      2

      Other Sr. Software Engineer interview reviews for Klaviyo

      Senior Software Engineer Interview

      Oct 14, 2025
      Anonymous interview candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied online. The process took 1 week. I interviewed at Klaviyo in Jul 2025

      Interview

      Typical interview process. Recruiter call, online assessment, and then supposed to have a hiring manager round. I cleared the online assessment but was ghosted after that round. No response from recruiter.

      Interview questions [1]

      Question 1

      In the line of implementing key value database
      Answer question
      1

      Senior Software Engineer Interview

      Jun 23, 2025
      Anonymous interview candidate
      No offer
      Negative experience
      Easy interview

      Application

      I applied through a recruiter. The process took 2 weeks. I interviewed at Klaviyo

      Interview

      The recruiter reached out via linkedin, then set me up for an OA which I aced, and then arranged a 45 mins conversation with the hiring manager. After this they ghosted me. Totally unprofessional.

      Interview questions [1]

      Question 1

      Go over a challenging project.
      Answer question
      1

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