---
title: "Pre-training Data… at Anthropic – San Francisco, CA"
canonical: "https://www.metaintro.com/job/pre-training-data-infrastructure-engineer-at-anthropic-da2a7bea-76d6-504c-8b8e-c6506aeac3e0"
language: "en"
author: "Metaintro"
---

[![Anthropic logo](/api/company-logo?url=https%3A%2F%2Fcdn.prod.website-files.com%2F67ce28cfec624e2b733f8a52%2F67d31dd7aa394792257596c5_webclip.png&sig=aEaJXyPK6-oCmR5HQK6XvCcpDHpr5bk74Lfh_6M2xOg)](/company/anthropic)[Anthropic](/company/anthropic)
# Pre-training Data Infrastructure Engineer at Anthropic

Department: AI Research & Engineering

Compensation

$500,000 – $850,000/yr

**Setup**
: Hybrid

**Location**
: San Francisco, California

**Type**
: Full-time

**Level**
: staff+

**Posted**
: Nov 3, 2025

## Description

Anthropic is hiring a Staff Engineer for its Pre-training team to develop large language models. The role focuses on designing and operating high-throughput, fault-tolerant distributed data-processing systems, including tokenization, deduplication, chunking, data quality validation, and end-to-end pipelines that convert web-scale corpora into training-ready datasets. Candidates should have at least five years of professional experience, strong software engineering and distributed-systems skills, experience with Apache Spark and language-model training infrastructure, and an advanced degree in computer science or a related field. The role offers an annual salary of $500,000–$850,000 USD, requires office presence at least 25% of the time, and may offer visa sponsorship.

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