# Security Engineer / Research Engineer, RL Security at Anthropic

- Company: Anthropic
- What the company does: Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems. Backed by Accel, Bessemer and General Catalyst.
- Company website: https://www.anthropic.com/
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco, CA | New York City, NY | Seattle, WA
- Work setup: On-site
- Posted: 2026-10-20
- Apply by: 2026-12-04
- Apply: https://job-boards.greenhouse.io/anthropic/jobs/5458420008?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/anthropic-security-engineer-research-engineer-rl-security/

## About the role

Reinforcement learning is how Claude learns to reason, write code, and act autonomously over long horizons. At frontier scale, an RL run is a large distributed system: training, sampling, and environment execution run concurrently across a large fleet of accelerators and hosts. As an engineer in RL Engineering, you'll work on keeping that system secure as it scales. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Strong software engineering skills in Python and at least one systems language such as Rust, C++, or Go
- Experience designing, building, and operating large-scale distributed systems or security systems in production
- Strong understanding of security fundamentals
- Working knowledge of Linux, containers, and cloud infrastructure
- Experience debugging complex problems across many hosts and services
- Ability to reason about tradeoffs between security, performance, and reliability

Tags: AI Research & Engineering

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/anthropic-security-engineer-research-engineer-rl-security/