Senior Staff AI Engineer, Anti-Fraud

ace-line old-record-id- Who we are ace-line old-record-id- ace-line old-record-id- At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual s freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. ace-line old-record-id- About The Opportunity The company’s Anti-Fraud Team leverages advanced blockchain data and AI technologies to protect users and platforms from scams, abuse, and other fraudulent activities. The team develops innovative, scalable solutions that safeguard the integrity of digital ecosystems. The AI Engineer will be responsible for designing and implementing intelligent algorithms to analyze on-chain data, enabling the detection and prevention of fraudulent activities such as scams and reward/campaign abuse. The role requires expertise in transformer models, graph databases, and AI agents to strengthen detection capabilities. The AI Engineer will also lead the deployment of scalable AI services into production, ensuring reliable and real-time fraud detection. What You’ll Be Doing ace-line old-record-id- ace-line old-record-id- ace-line old-record-id- Develop and optimize machine learning models, with a focus on transformer-based architectures, tailored for fraud detection in blockchain data. Interpret and analyze on-chain data to extract meaningful features for building robust anti-fraud algorithms. Design and implement graph-based approaches using graph databases and graph query languages to identify complex fraud patterns. Build intelligent agents using LangGraph or similar frameworks to automate detection workflows and decision-making processes. Deploy and maintain AI services and models in production environments, ensuring scalability, reliability, and high performance. Collaborate with data engineers, product