Mercor Interview Questions
Mercor's bank is small and tilted toward design. Across 25 recorded questions, System Design and ML System Design account for 9 between them, with Software Engineering Fundamentals next at 3. Two rounds appear in the data: a technical screen carrying 9 questions and an onsite carrying 6. Machine Learning Engineer leads at 9, ahead of Software Engineer at 6. Ratings are flat, 14 medium and a single easy. The design briefs mirror what Mercor builds: a high-demand event ticket marketplace, candidate search paired with LLM evaluation tasks, work orchestration for machine-learning data pipelines, and an Ollama eval harness. The rest reads like an infrastructure oral exam, covering processes versus threads in Linux and Python, Kubernetes autoscaling and traffic routing, VPCs, and what happens when a browser opens a website. One prompt hands you a compact GPT-style transformer to review. 5 questions were added in the last 90 days, 2 are tagged as AI-assisted rounds, and 2 first-hand interview experiences are on the site.
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