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Infrastructure Engineer, Pre-training

Anthropic is hiring a Staff-level Infrastructure Engineer for its Pre-training team, which develops the next generation of large language models. The role sits at the intersection of machine learning research and production engineering, wit

Company

Anthropic

Location

San Francisco, CA, United States

Status

Closed

Posted

2026-09-17T03:33:49.146+00:00

Anthropic's Pre-training team is hiring a Staff-level infrastructure engineer to build the data-processing systems behind its large language models. The work covers designing and running distributed pipelines that turn web-scale corpora into training-ready datasets: tokenization, deduplication, chunking, validation and quality assurance, plus collaboration with researchers on new data-processing architectures. The posting asks for at least five years of professional experience beyond internships and a record with high-throughput, fault-tolerant distributed systems, with Spark, MLOps, Python and Rust listed as valuable. The role is hybrid in San Francisco.