---
title: "AI Security Researcher/Research Engineer"
company: "Brave"
company_url: "https://www.remjobs.works/companies/brave"
url: "https://www.remjobs.works/job/brave-ai-security-researcher-research-engineer-a6500d1d-7e74-421f-8446-861a74ee2b99"
apply_url: "https://job-boards.greenhouse.io/brave/jobs/8165845"
workplace: onsite
location: "London, England"
employment_type: unspecified
seniority: mid
role: ai-machine-learning
region: united-kingdom
skills: ["llm", "python", "pytorch"]
date_posted: 2026-08-29T16:52:15.000Z
first_seen_by_remjobs: 2026-09-05T08:27:23.735Z
---

# AI Security Researcher/Research Engineer

**Brave** · London, England

Apply: https://job-boards.greenhouse.io/brave/jobs/8165845

## About the role

**AI Security Researcher / Research Engineer**

**Remote or hybrid - London preferred**

##### About Brave:

Brave is on a mission to protect the human right to privacy online. We’ve 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. Millions more switch every month.

The internet is a sea of ads, hackers, and echo chambers. Big Tech makes huge profits off our data, and tells us what’s true and what’s not. Brave is fighting back. Join us!

##### Summary

We are looking for a researcher/research engineer to help mitigate the security risks that come with building AI systems-especially LLM-powered web agents and chatbots. In this role, you'll design and implement secure-by-design architectures, audit our LLM-powered web agent (https://brave.com/blog/ai-browsing/) and chatbot, and help set Brave's direction on how we identify, measure, and reduce security risk across AI products.

##### Responsibilities

- 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

##### You may be a good fit if you have

- 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

##### Skills That Will Set You Apart from the Competition

- 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

##### Working at Brave - What we offer

- 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

We are looking to hire in London but would *consider* an exceptional candidate in the rest of Europe.

NO AGENCIES or RECRUITERS PLEASE - Unfortunately, we cannot work with third parties on these searches.

---

Source: Brave's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/brave-ai-security-researcher-research-engineer-a6500d1d-7e74-421f-8446-861a74ee2b99