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Role description

AI Systems Researcher/Engineer

Brave logoBrave
AI-native
LocationNorth America, EU, UK
Posted8/26/2026
Research

AI Systems Researcher / Research Engineer

London (Preferred) - Hybrid, or Remote in North America, EU, UK

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

Join us at Brave as we redefine the future of online experiences with a range of cutting-edge, top-performing products. We’re seeking an experienced AI Systems and Performance Researcher/Engineer to shape and improve our performance evaluations and optimizations across desktop and mobile. If you’re passionate about innovation, privacy, and delivering impactful AI solutions, this is your opportunity to make a difference. We need you to help with a wide range of key products, ranging from our browser ML models, novel applications, on-device AI agents, performance evaluations, and collaborating closely with privacy and security researchers to protect the users from AI risks.

About you

An ideal candidate will have a mix of skills that include the following:

  • Demonstrates a high level of initiative and consistently delivers high-quality solutions
  • Has an enquiring mind and a disciplined scientific approach to extracting facts and understanding observed behavior
  • Is excited by the potential of realizing high-value commercial outcomes and change the way that the advertising business operates
  • Want to be part of a high-growth startup company with global ambitions 
  • Experience with software development practices (Python, C++, JavaScript and/or Rust)
  • Has a proven track record implementing data driven products and a broad understanding of the state of the art in systems and networks 
  • Comfortable working in an open-source setting
  • Able to create and deploy mobile/desktop applications and systems
  • Has a passion for helping protect users’ privacy and security
  • A Ph.D. in computer science is highly preferred, but we may consider some exceptions with industry experience

Specific Skills

  • Background and/or previous work in AI systems research and performance evaluation.
  • Expertise in optimizing and evaluating ML models and/or privacy & security technologies for on-device performance.
  • Experience with modern Machine Learning (ML) frameworks (e.g., Pytorch, TensorFlow, MLX, ONNX Runtime, Core ML, TensorRT, etc.).

Skills That Will Set You Apart from the Competition

  • ML Systems (pipelines, performance evaluation, etc.)
  • Open source projects on mobile/desktop systems optimization
  • Experience with confidential computing and security/privacy 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.

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Company info

Brave logo

Brave

The browser and search engine that save you time and keep you safe.

Brave is building a user-first Web. The Brave browser is used by over 128 million people worldwide. It blocks third-party ads and trackers by default for fast, private browsing. It also offers a wealth of helpful features including a VPN and an AI browsing assistant. Brave is one of just three Web search indexes at scale in the West, and it’s the only one commercially available in a reliable, independent Search API. It provides users with accurate, AI-enhanced answers without profiling them. Brave Search is available as the default search engine in Brave, or via any other browser at search.brave.com. The Brave Search API helps organizations supply their AI LLMs with real-time data, power agentic search, train foundation models, and create search-enabled software. The Brave Search API helps anyone—from hobbyists to large enterprises—build applications that benefit from having access to the Web, going beyond the static knowledge of AI models. Our API uses our own search index so we ca

Private companySeries BIn the news
Founded2015
HQSan Francisco, United States
Unlock human wisdom
ThesisTermsPrivacy
Size
51–200 employees
IndustryTechnology, Information and Internet
Funding
  • Series B · Apr 1, 2022
Investors
Page One Ventures
News
  • 3 reasons why I'll never fully switch to Brave and still have Chrome on my phone

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