20 hours ago
San Jose, CA, USAMid Level
H1B sponsor
Base Salary
$215k - $322k/yr
Responsibilities
- Build, evaluate, deploy, and monitor machine learning models for fraud and risk detection.
- Improve data quality, feature engineering, and model performance while balancing fraud detection with customer experience.
- Develop AI agents for investigations, case summarization, evidence retrieval, and routine workflow automation.
- Use AI coding tools to accelerate development, testing, and debugging while reviewing and validating generated code.
- Collaborate with engineering, product, risk, analytics, and operations teams to deploy solutions and measure their impact.
Requirements
- Strong machine learning foundation with hands-on experience in deep learning and tree-based models such as XGBoost or LightGBM.
- Strong Python skills and experience training, evaluating, and deploying models.
- Practical experience building AI agents or LLM applications, including tool calling, retrieval, or workflow automation; prototypes and personal projects are acceptable.
- Regular use of AI coding tools with the ability to understand, test, and improve generated code.
- Familiarity with databases and data pipelines for training-data preparation and ML workflows.
- Experience with account takeover, scam detection, fraud, or other risk use cases is preferred.
- Experience with LLM training, fine-tuning, evaluation, alignment, reinforcement learning, real-time ML systems, imbalanced datasets, or model explainability is preferred.
- Fluency in Mandarin is preferred.
- Strong problem-solving, communication, and collaboration skills.
Benefits
- Competitive total compensation package, including possible performance bonus and long-term incentives.
- Learning and development programs, team-building programs, company events, wellness allowances, and meal allowances.
- Comprehensive healthcare schemes for employees and dependants.
- Hybrid work arrangement, as indicated by the #LI-HYBRID posting designation.
Tech Stack
Categories
About OKX
OKX builds a global cryptocurrency exchange and Web3 wallet used by retail and institutional traders for spot, derivatives, and DeFi access, with developer APIs. Its business model centers on trading and financing fees, plus wallet and on-chain services. Founded in 2017 and privately held, OKX publishes monthly proof-of-reserves and operates as part of the OKG group serving crypto markets worldwide.