Anti-Bot & Fraud Researcher

Castle
Europe · Africa · Middle EastPosted Jul 12, 2026
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Skip to main content Anti-Bot & Fraud Researcher Castle EMEA Apply Anti-Bot & Fraud Researcher Castle EMEA 3 days ago Over 200 applicants See who Castle has hired for this role Apply Save Report this job Use AI to assess how you fit Get AI-powered advice on this job and more exclusive features. Am I a good fit for this job? Tailor my resume Sign in to access AI-powered advices Email or phone Password Show Forgot password? Sign in Sign in with Email or New to LinkedIn? Join now By clicking Continue to join or sign in, you agree to LinkedIn’s User Agreement, Privacy Policy, and Cookie Policy. Sign in to evaluate your skills Email or phone Password Show Forgot password? Sign in Sign in with Email or New to LinkedIn? Join now By clicking Continue to join or sign in, you agree to LinkedIn’s User Agreement, Privacy Policy, and Cookie Policy. Sign in to tailor your resume Email or phone Password Show Forgot password? Sign in Sign in with Email or New to LinkedIn? Join now By clicking Continue to join or sign in, you agree to LinkedIn’s User Agreement, Privacy Policy, and Cookie Policy. Direct message the job poster from Castle Antoine Vastel, PhD Antoine Vastel, PhD Head of Research @ Castle We're looking for someone who's genuinely fascinated by how fraudsters operate online and enjoys sharing what they learn.The kind of person who reverse engineers anti-detect browsers just to understand how they work. Who opens DevTools on a random website because they're curious which anti-bot vendor is protecting it. Who can't resist taking apart a new browser automation framework to see what changed.If that sounds familiar, keep reading.At Castle, we help companies like Lovable, Canva, and Rockstar Games stop bots, fake accounts, credential stuffing, and account abuse.Research is one of the reasons our product keeps improving.We believe the best way to build great detection systems is to constantly study the people trying to bypass them. That means spending time where attackers spend time: following Telegram channels, Discord communities, GitHub repositories, and underground forums. Reverse engineering their tools. Understanding how their techniques evolve. Running experiments to separate hype from reality.Everything we learn feeds back into Castle. Sometimes it becomes a new detection technique....

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