> Markdown version of [/jobs/ext/2714845-research-engineer-cybersecurity-rl-reinforcement-learning](https://www.wearedevelopers.com/jobs/ext/2714845-research-engineer-cybersecurity-rl-reinforcement-learning). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Research Engineer, Cybersecurity RL (Reinforcement Learning)

- **Company:** Anthropic's Mission
- **Location:** New York, United States
- **Salary:** $300,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Fuzz Testing, Machine Learning, Secure Coding, Software Engineering, Software Vulnerability Management, Large Language Models
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/research-engineer-cybersecurity-rl-reinforcement-learning-anthropic-3-7545390

## About the Role

* Have experience in cybersecurity research.
 * Have experience with machine learning.
 * Have strong software engineering skills.
 * Can balance research exploration with engineering implementation.
 * Are passionate about AI's potential and committed to developing safe and beneficial systems.

Strong candidates may also have:

 * Professional experience in security engineering, fuzzing, detection and response, or other applied defensive work.
 * Experience participating in or building CTF competitions and cyber ranges.
 * Academic research experience in cybersecurity.
 * Familiarity with RL techniques and environments.
 * Familiarity with LLM training methodologies., Minimum education: Bachelor's degree or an equivalent combination of education, training, and/or experience

Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience

Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position

Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices.

## Description

We're hiring for the Cybersecurity RL team within Horizons. As a Research Engineer, you'll help to safely advance the capabilities of our models in secure coding, 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 specialists across and outside Anthropic.

The role requires domain expertise in cybersecurity paired with interest or experience in training safe AI models. For example, you might be a white hat hacker who's curious about how LLMs could augment or transform your work, a security engineer interested in how AI could help harden systems at scale, or a detection and response professional wondering how models could enhance defensive workflows.


## Related Videos

- [Agentic employees in world's most downloaded FinTech app](https://www.wearedevelopers.com/videos/100123-agentic-employees-in-world-s-most-downloaded-fintech-app)
- [Introduction to Azure Machine Learning](https://www.wearedevelopers.com/videos/368-introduction-to-azure-machine-learning)
- [How to Cause (or Prevent) a Massive Data Breach- Secure Coding and IDOR](https://www.wearedevelopers.com/videos/39-how-to-cause-or-prevent-a-massive-data-breach-secure-coding-and-idor)
- [How will artificial intelligence change the future of software testing?](https://www.wearedevelopers.com/videos/85-how-will-artificial-intelligence-change-the-future-of-software-testing)
- [You are not an AI developer](https://www.wearedevelopers.com/videos/1148-you-are-not-an-ai-developer)
- [What non-automotive Machine Learning projects can learn from automotive Machine Learning projects](https://www.wearedevelopers.com/videos/397-what-non-automotive-machine-learning-projects-can-learn-from-automotive-machine-learning-projects)

## Related Articles

- [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer)
- [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing)
- [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift)
- [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking)
- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [How to start an AI project for a good cause and boost your career](https://www.wearedevelopers.com/magazine/15-how-to-start-an-ai-project-for-a-good-cause-and-boost-your-career)