You'll work on real-time ML pipelines, anomaly detection, and adversarial ML techniques to stop bots and malicious actors. Combining traditional fraud signals with modern AI—LLMs, behavioral clustering, and vector-based search—to stay ahead of attackers. You'll own models end to end and deploy quickly, with direct access to rich, structured behavioral and fingerprinting data. Ideal for someone with strong experience in the anti-fraud/anti-bot field who loves cutting-edge ML and wants immediate impact.
Remote
Remote Conditions
Fully remote from Europe/EMEA timezone
Salary
Not Specified
Benefits
US salaries globally, Flexible hours, Unlimited PTO, Paid parental leave
Castle is a YC-backed Series A startup helping companies like Canva, Atlassian, and Rockstar Games fight fraud and abuse. They are building modern, AI-powered bot detection and abuse prevention tech, with a focus on real-time protection and behavioral intelligence.
