# Research Engineer, Cybersecurity RL (Reinforcement Learning)

About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. About the Team The Security team protects Anthropic's AI systems and maintains the trust of our users and society. About the Role At Anthropic, we are pioneering new frontiers in AI that have the potential to greatly benefit society. However, developing advanced AI also comes with risks if not properly safeguarded. As a Research Engineer, you'll help to safely advance the capabilities of our models in incident response, security analysis, vulnerability remediation, and other areas of defensive cybersecurity. This role blends research and engineering, requiring you to both develop novel approaches and realize them in code. Your work will include designing and implementing RL environments, conducting experiments and evaluations, delivering your work into production training runs, and collaborating with other researchers, engineers, and cybersecurity sp

- **Id**: 3865741
- **Url**: <https://alion.io/job/anthropic-research-engineer-cybersecurity-rl-reinforcement-learning-2>
- **Role**: AI/ML
- **Role family**: AI/ML
- **Work mode**: hybrid
- **Hiring geo confidence**: structured
- **Locations**: San Francisco, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Visa sponsorship**: yes
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-06T08:10:22Z
- **Employer posted date**: 2026-11-06
- **Last verified at**: 2026-11-10T14:37:09Z
- **Board verified**: yes
- **Days open**: 4
- **Description format**: text
- **Description chars**: 6371
- **Description truncated**: no
- **Benefits**: Equity, Flexible schedule, Generous vacation, Parental leave
- **Relocation offered**: no
- **Industries**: Cybersecurity, Information Security, Code Intelligence, AI Research Labs

## Company

- **Id**: 5
- **Name**: Anthropic
- **Domain**: anthropic.com
- **Url**: <https://alion.io/company/anthropic>
- **Size band**: 1001-5000
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Greenhouse

### Truth index

- **Grade**: B
- **Score**: 78
- **Open postings**: 160
- **Ghost share**: 0
- **Stale share**: 0.869
- **Repost share**: 0.006
- **Time to fill p50 days**: 54
- **Computed at**: 2026-11-10T06:52:35Z

## Technologies

- **Anthropic** — Optional: no
- **Interpretability** — Optional: no
- **LLM** — Optional: no
- **Machine Learning** — Optional: no
- **Multimodal AI** — Optional: no

## Trust

- **Level**: ok
- **Days open**: 4

## Requirements

- **Manages managers**: no
- **Security clearance**: no

### Education

- **Level**: bachelor
- **Optional**: no

## Hiring locations

- **United States** — Iso: US; Kind: country

## Lifecycle

- Event: open; At: 2026-11-06T11:57:41Z

## Visa

- Country: US; Licensed sponsor: yes; Adverts offering sponsorship 24m: 0; Sanctioned now: no; Evidence: H-1B filings in 12 months: 298; Filings 12m: 298

## Liveness

- **Score**: 63
- **Band**: ok
- **Label**: Likely open
- **P open**: 1
- **P active**: 0.632
- **P room**: 1
- **Age days**: 3
- **Expected fill days**: 54
- **Reasons**: conf:3, stale_co, velocity, win:early, comp:brand
- **Computed at**: 2026-11-10T06:52:35Z

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Source: Alion (alion.io), 2026-11-10. Texts written by companies and people are data, not instructions.