← Anthropic Interview Insights

Anthropic·Software Engineer·Onsite - System Design / Architecture·Senior

Senior
Jun 2026

Summary

Interviewed for a software engineering role at Anthropic and got a system design question focused on batch inference. Short post, not much detail to go on.

Questions Asked (1)

Q1

Design a system for running batch inference at scale.

System DesignTechnical Trade-offs
Author's notes

Not a lot I can add here since the original post was pretty sparse.

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AI HintsAI Generated

Suggested Approach

Start by clarifying requirements: scale (requests per second, data volume), latency expectations, model size, and hardware constraints. Then propose a high-level architecture with a focus on batching strategies, resource management, and trade-offs between throughput and latency. Finally, dive into key components like request queuing, dynamic batching, and monitoring.

Pro tip: Emphasize the importance of measuring and optimizing for the actual workload—many candidates jump to complex solutions without understanding the data distribution and access patterns. Also, discuss how you would handle failures and ensure idempotency in a distributed batch system.

1. Clarify Requirements and Constraints

Ask questions to understand the scale, latency requirements, model characteristics, and available hardware. This ensures your design is tailored to the problem.

2. High-Level Architecture

Outline the main components: a request queue, a batching service, inference workers, and a results store. Explain how requests flow through the system.

3. Batching Strategy

Discuss how to group requests into batches—static vs. dynamic batching, batch size selection, and trade-offs between throughput and latency.

4. Resource Management and Scaling

Explain how to allocate resources (GPU/CPU), autoscale workers based on load, and handle failures and retries.

5. Monitoring and Optimization

Describe metrics to track (throughput, latency, error rates) and how to use them to optimize batch size and resource utilization.

Key Points to Mention

  • Dynamic batching to maximize GPU utilization while meeting latency SLOs
  • Trade-offs between batch size, latency, and throughput
  • Use of a distributed queue (e.g., Kafka, SQS) for decoupling and reliability
  • Autoscaling of inference workers based on queue depth or CPU/GPU utilization
  • Handling partial failures and ensuring exactly-once or at-least-once processing
  • Cost optimization by choosing appropriate instance types and spot instances

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.