Machine Learning Engineer — Risk & AI
Who We Are
About the Opportunity
What You'll Be Doing
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Build, evaluate, and deploy machine learning models for fraud and risk detection.
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Improve data quality, features, and model performance, balancing fraud detection with customer experience.
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Develop AI agents to support investigations, summarize cases, retrieve evidence, and automate routine workflows.
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Use AI coding tools to accelerate development, testing, and debugging while reviewing and validating their output.
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Work with engineering, product, and risk teams to deploy solutions and monitor their impact.
What We Look For In You
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A strong foundation in machine learning, with hands-on experience in deep learning and tree-based models such as XGBoost or LightGBM.
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Strong Python skills and experience training, evaluating, and deploying models.
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Some practical experience building AI agents or LLM applications, including tool calling, retrieval, or workflow automation. Prototypes and personal projects are welcome.
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Regular use of AI coding tools, with the ability to understand, test, and improve generated code.
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Familiarity with databases and data pipelines for preparing training data and supporting ML workflows.
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Good problem-solving, communication, and collaboration skills.
Nice to Haves
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Experience in account takeover (ATO), scam detection, or other fraud and risk use cases.
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Experience with LLM training, fine-tuning, evaluation, and alignment.
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Experience with reinforcement learning algorithms and their practical implementation.
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Experience with real-time ML systems, imbalanced datasets, or model explainability.
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Prior fraud or risk experience is helpful
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Fluency in Mandarin
Perks & Benefits
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Competitive total compensation package
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L&D programs for employees' growth and development
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Various team building programs and company events
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Wellness and meal allowances
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Comprehensive healthcare schemes for employees and dependants
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More that we love to tell you along the process!
Salary Range
USD 214,666 - 321,999 per year
About OKX
OKX is a leading global Web3 technology company and cryptocurrency exchange, dedicated to building the future of decentralized finance and digital asset ownership. With a robust presence and growing operations across Colombia, Argentina, and Mexico, we provide a secure, innovative, and user-friendly platform for millions worldwide to trade, invest, and explore the vast potential of the blockchain ecosystem. We're at the forefront of developing cutting-edge solutions, from advanced trading tools and DeFi protocols to immersive metaverse experiences and NFT marketplaces, all powered by our unwavering commitment to security and transparency. Our culture at OKX is driven by innovation, collaboration, and a passion for pushing the boundaries of what's possible in Web3. We foster an environment where bright minds are empowered to contribute to a decentralized future, thrive on challenging projects, and grow alongside pioneering technology. We value diversity of thought, encourage continuous learning, and believe in building a team that is as global and interconnected as the blockchain itself. Joining OKX means being part of a dynamic, fast-paced team that is shaping the next generation of the internet. If you're a blockchain professional eager to make a tangible impact and contribute to a truly global platform, OKX offers unparalleled opportunities. We're seeking visionary talent in LATAM to join our mission of making crypto and Web3 accessible to everyone, everywhere. Come build with us and play a pivotal role in accelerating the adoption of decentralized technologies, empowering individuals, and revolutionizing financial systems around the world.
Ready to Apply?
To submit your application for this position, please visit OKX's official website and follow their application process.