B
AI Security Researcher/Research Engineer
Contract type
Ongoing
Work mode
Remote
Experience
3 years
Job description
A researcher/research engineer role at Brave focused on mitigating security risks in AI systems, especially LLM-powered web agents and chatbots. The role involves designing secure-by-design architectures, auditing AI products, and shaping Brave's AI security strategy.
At a glance
- Work mode
- Remote
What you'll do
- Design and execute adversarial evaluations to uncover failure modes in LLM-powered web agents and chatbots (e.g., prompt injection, tool abuse, data exfiltration)
- Analyze model behavior (including internal thoughts) to understand and forecast security risks in frontier models
- Develop and prototype security-focused training and fine-tuning techniques
- Augment web agents with security principles including information flow control, privilege control and contextual security
- Partner with engineers and (privacy, ML, and Cryptographic) researchers to translate findings into product changes, tests, and measurable security improvements
- Help define a forward-looking security strategy and policy for building and responsibly releasing web agents—advocating for user protection
What we're looking for
- Demonstrated experience working on Secure AI (prompt injection attacks and security guardrails)
- Strong publication record in AI security, ML security, or closely related areas
- A track record of shipping products and features inside a fast-moving environment
- Strong coding skills in Python and familiarity with ML frameworks like PyTorch or JAX
- Experience training, fine-tuning, and evaluating large language models
- Deep familiarity with large language models and web agents, how they work, and how they are trained
- Experience applying security principles (e.g., information flow control, access control/least privilege)
- Demonstrated success in bringing clarity and ownership to ambiguous technical problems
- A Ph.D. in computer science is highly preferred, but we may consider some exceptions with industry experience
Nice to have
- Knowledge of AI Systems (pipelines, security evaluation, etc.)
- Open source projects on security/privacy
- Experience with confidential computing and ZKP/SMPC protocols
- Ph.D. in computer science from a top-tier school
- A strong publication record in premier systems, performance, or ML
- Work experience in industry is desirable
Benefits
- Ability to work at an exciting and well-funded international startup headquartered in San Francisco
- Cutting-edge technology, allowing you to work with state-of-the-art tools and software solutions
- Competitive compensation and plenty of room for personal growth
- Great international exposure and team atmosphere
Apply
About Brave
Protect the human right to privacy online
Brave has built a free web browser that blocks creepy ads and trackers by default, a private search engine with a truly independent index, private AI assistant, latest privacy and security features, and a private ad network (opt-in!) that directly rewards you for your attention. Already over 120 million people regularly use Brave for a faster, more private web.
Mission
Brave is on a mission to protect the human right to privacy online.
Key facts
- San Francisco
- Over 120 million people regularly use Brave
- Millions more switch every month
- Well-funded international startup headquartered in San Francisco