Senior /Staff AI Engineer

We are looking for a Senior AI Engineer to design, build, and own key identity-risk and trust models at OKX. You will build models that combine identity verification results, device and geo data, and user behavior into trust and risk signals, and use graph and clustering methods to uncover organized, industrialized fraud. This is an end-to-end, research-to-production role: you will own algorithms in your domain and ship models into real-money, high-risk, large-scale production environments.

You will be a hands-on technical contributor who works closely with Product, Risk, and Compliance, and who helps raise the technical bar of the team. Your domains span:

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Identity trust & risk modeling — fusing verification scores, device, geo, and behavioral data into identity-quality and trust signals.

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Cluster & relationship intelligence — graph and clustering methods to identify account farms, mass registration, and coordinated attacks.

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Behavioral risk modeling — behavioral features and sequence models for account takeover and abnormal-session detection.