Meta Machine Learning Interview Questions
6 machine learning questions reported by candidates who interviewed at Meta, out of 117 Meta questions we track. They average 3.3/5 difficulty (medium). Most common topics: Optimization, Clustering, Scaling Laws, Em. 5 were reported asked within the last year, most recently in June 2026.
Practice Meta questions →Difficulty
- 3/5 — medium4
- 4/5 — hard2
Asked for MLE (5), RS (4), SWE (3), Infra (1)
Reported Meta machine learning questions
ML Foundations: Optimizers, Scaling Laws, K-Means, GMM
3/5In this technical discussion reported from Meta, candidates undergo a rigorous evaluation of core machine learning concepts and theoretical principles. The conversation spans gradient optimization algorithms, scaling dynamics for modern models, unsupervised clustering methods, and probabilistic mixture formulations, testing both mathematical intuition and practical engineering trade-offs. Interviewers look for precise, rapid explanations and the ability to connect fundamental theory to contemporary large-scale architectures. Reviewing the complete interview guide and detailed topical explanations requires a paid subscription.
asked June 2026OptimizationClusteringScaling LawsLLM conceptual questions
3/5Dive into foundational theoretical concepts underpinning modern transformer architectures and large language models. This set of conceptual questions examines computational bottlenecks, such as the quadratic time and memory complexity associated with self-attention mechanisms relative to sequence length and embedding dimensions. It is an essential review for engineers preparing for rigorous machine learning system design interviews. Access the complete conceptual overview, detailed explanations, and expert answers with a subscription.
asked June 2026Meta AI Assisted Coding Interview
4/5Prepare for a modern repository-based technical assessment used at Meta, where candidates navigate an existing codebase rather than writing isolated algorithms from scratch. This evaluation focuses on reading unfamiliar code, executing and interpreting tests, identifying software bugs or bottlenecks, and implementing robust patches. You will also need to demonstrate your ability to collaborate with AI tooling under specific constraints and articulate key technical tradeoffs. Access the complete problem guide and expert-crafted model solution with a paid subscription.
asked June 2026LLM with Beam Search and Nucleus Sampling (Meta MSL)
4/5Explore how to evaluate generative text models by contrasting prominent decoding techniques in a reported Meta interview. This challenge requires analyzing how generation parameters influence output diversity, textual quality, and computational overhead in production environments. You will examine the algorithmic trade-offs between deterministic sequence search and probabilistic token selection. Unlock the comprehensive question breakdown, architectural analysis, and expert model solution with a subscription.
asked April 2026PE Troubleshooting: Web Server Down / Disk Full
3/5This Meta production engineering simulation drops you into a high-pressure incident response scenario where you must diagnose root causes using standard Linux diagnostic tools and investigative reasoning. The interview tests your operational readiness, methodology in narrowing hypotheses, and practical debugging instincts under strict time constraints. Preparing for this round elevates your site reliability engineering capabilities. To explore the full troubleshooting walkthrough and expert evaluation criteria, subscribe today.
asked April 2026DebuggingLinuxSREImplement a Two-Hidden-Layer MLP with Backpropagation in NumPy
3/5A coding question on building a small feed-forward regression network by hand. It tests whether you can derive and vectorise the gradients of a squared-error loss through ReLU layers, keep every array shape consistent, and verify the result numerically.
asked July 2025Deep Learning In Dumpy
Recent Meta interview experiences
Full loops shared by candidates, every round included.
Meta phone — Verifying an Alien Dictionary (LC953) + a one-skip palindrome
A Meta phone screen — a string/ordering problem plus a two-pointer follow-up. Also genuinely unclear whether Meta had really un-frozen, so I'm posting to compare notes on the current req situation.
Meta onsite — two research-design rounds + behavioral
MLE/Research PhD loop: two research-design rounds (open scenarios plus language-model topics, including a linear-attention discussion) and one behavioral round. The recruiter seemed specifically dedicated to the MSL/MRS tracks.
Meta AI-assisted coding — bug-fix → implement → optimize, and the hidden follow-ups got me (fail)
Meta's newer AI-assisted coding format caught me off guard. It looks like one problem, but it's got staged, unannounced follow-ups you have to finish in the time limit — very different from the traditional "we'll tell you how many questions and give you a break" flow. Didn't pass.
Meta machine learning interview FAQ
- What machine learning questions does Meta ask?
- 6 reported machine learning questions, most often on Optimization, Clustering, Scaling Laws, Em, Debugging.
- How hard is the Meta machine learning interview?
- The reported machine learning questions average 3.3 out of 5: 4 at 3/5, 2 at 4/5.
- Are these Meta machine learning questions recent?
- The most recent report is from June 2026, and 5 were reported within the last twelve months. Dates come from the interview reports themselves.