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      Machine Learning Engineer Interview

      Sep 25, 2025
      Anonymous Interview Candidate
      Londres, Inglaterra
      Declined offer
      Positive experience
      Average interview

      Application

      I interviewed at Meta (Londres, Inglaterra)

      Interview

      HR call The HR call focused on my background, motivation for applying, and interest in the company. We discussed my career goals, cultural fit, work authorization, and expectations around salary, role scope, and timeline. 1st coding (2 tasks) The first coding round involved two algorithmic tasks under time constraints. Both required efficient problem-solving and clean implementation. I explained my approach, optimized for edge cases, and demonstrated proficiency with Python data structures. 2nd coding (2 tasks) The second coding round included more challenging tasks involving algorithmic reasoning and optimization. I was asked to justify trade-offs, improve complexity, and handle edge scenarios. Clear communication and structured thinking were essential throughout. Behavioural In the behavioral interview, I was asked about teamwork, conflict resolution, leadership, and ownership. I shared concrete examples using the STAR framework to highlight impact, adaptability, decision-making, and growth in past professional experiences. ML system design The ML system design round required structuring an end-to-end pipeline for a real-world problem. I covered data collection, preprocessing, feature engineering, model selection, deployment, monitoring, scalability, trade-offs, and ethical considerations to ensure robustness.

      Interview questions [1]

      Question 1

      Coding: Implement an LRU cache ML System Design Design a news feed ranking system
      Answer question
      2

      Other Machine Learning Engineer Interview Reviews for Meta

      Machine Learning Engineer Interview

      Apr 6, 2026
      Anonymous Interview Candidate
      No offer
      Positive experience
      Average interview

      Application

      I interviewed at Meta

      Interview

      Applied online. Received a recruiter screen within two weeks covering background and role fit. Followed by a technical phone screen with coding (LeetCode medium-hard, arrays/graphs). Then a virtual onsite with 4 rounds: 2 coding, 1 ML system design (recommendation/ranking system), and 1 behavioral. Interviewers were professional and gave time to ask questions. Results communicated within a week post-onsite.

      Machine Learning Engineer Interview

      Mar 24, 2026
      Anonymous Interview Candidate
      Londres, Inglaterra
      No offer
      Positive experience
      Easy interview

      Application

      I interviewed at Meta (Londres, Inglaterra)

      Interview

      First stage was a screen round with behavioral and 2 leetcodes, one medium one hard, 15-17 min each. If selected, loop is 4-6 interviews. 2 desgin, 2 coding, 1 behavioral.

      Interview questions [1]

      Question 1

      idiotic questions that can't be answered in depth in 35 minutes design, like "your solution isn't going to work, how will you handle it?" yea no sht this is a baseline bro, wait 15 seconds and ill talk about the optimal one.
      Answer question

      Machine Learning Engineer Interview

      Mar 12, 2026
      Anonymous Interview Candidate
      Londres, Inglaterra
      No offer
      Neutral experience
      Average interview

      Application

      I applied through a recruiter. I interviewed at Meta (Londres, Inglaterra)

      Interview

      Standard Meta process. 1. Recruiter Call 2. Screening Call 3. Onsite Calls -4 rounds (2 coding, 1 ML design, 1 behavioral) Interviews were all nice except for behavioral. (wouldn't hurt to speak anything apart from okay-okay)

      Interview questions [1]

      Question 1

      3 Leetcode medium and 1 hard.
      Answer question

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