Sr. Data Scientist, Fraud Risk

The Sr Data Scientist, Risk role at Okcoin is a highly-impactful position that requires a strategic perspective, deep analytical and modeling capabilities, and a collaborative working style. The right candidate will have strong intellectual curiosity and passion for achieving business results. Key responsibilities include identifying complex fraud patterns, serving as a technical SME, collaborating across business and technology stakeholders, and providing technical guidance for engineering projects. The ideal candidate will have a Master's degree (or PhD) in a quantitative discipline, 4+ years of fraud analytics experience in financial services or FinTechs, and deep understanding of modern machine learning techniques/algorithms.

• Identify complex fraud patterns and their technical root causes through detailed data mining and analysis, including identification of sophisticated fraud methods employed by actors who are deliberately trying to avoid detection.
• Serve as technical SME by sharing new data mining techniques, maintaining technical reference documentation, and interfacing with partner technology teams.
• Collaborate across business and technology stakeholders to communicate analytical findings to both technical and non-technical audiences.
• Provide technical guidance for engineering projects that incorporate new data points into the investigation team’s toolkit, such as API integrations or internal data transformations.
• Link Analysis/Graph analytics to find and mitigate deeply-connected fraud networks and detect new accounts being added to these networks.
• Unsupervised learning methods to augment existing supervised models, or detect portfolio anomalies.
• Development of machine learning models.
• Partner with product and engineering team in implementing features and models, and enhancing systems.

• Master's degree (or PhD) in Statistics, Mathematics, Operations Research, Computer Science, Economics, Engineering or other quantitative discipline. Bachelor's degree with significant relevant experience will be considered.
• 4+ years of fraud analytics experience in financial services or FinTechs
• Crypto/Blockchain experience
• Deep understanding of modern machine learning techniques/algorithms including GBM, XGBoost, LGBM, etc. Advanced programming skills of statistical/analytical software (SQL, R, Python, etc.);
• Successful track record of owning and driving large, complex data analysis projects.
• Demonstrated capacity for innovation and outside-the-box thinking in the creation of new capabilities and processes that are unstructured or exploratory in nature.
• Experience in a fast-paced startup environment with a strong level of initiative; and
• Ability and willingness to travel as needed.
• Strong communicator in both writing and speaking
• Multi-tasking and strong project management skills
• Hands-on experience/knowledge of modeling in machine learning (GBM, XGBoost, Random Forest, etc.) is a plus.