As part of Cyber Threat Analytics and Research team (CTAR), you will leverage cutting-edge technologies to perform statistical profiling, inference, classification, clustering and predictive analysis. As a key member of the technical team, you will create and implement sophisticated machine learning models to help derive new insights to defend against cyber-attacks. You will be working with a large variety of data sets, cutting-edge security technologies, and world-class operation teams to create awesome analytics for security and other business units.Essential Functions:Analyze cyber event logs using Spark and big data technologies and develop deeper insights into products using advanced statistical methods.Formulate cyber threat scenarios into technical data problems and develop high fidelity models to capture unseen threats.Devise and implement deep learning models for building user behavior profiles. This includes data acquisition, feature engineering, model development, and deployment.Conduct feature engineering on various data sources to build and enrich feature storeFine tune open source LLM to detect anomalous user behavior.Leverage Generative AI to perform RAG for helping improve Cyber investigation efficiency.As a member of the CTAR team, you will work closely with other data scientists and data engineers to build, design, engineer, and develop analytical software and services that deliver security functionality and improve security efficiency and capabilities through automation.  Assist in shaping overall direction, life-cycle management, and leadership for Information Security architecture and technology related to Visa. Communicate clean and persuasive data directly to end users, leadership, and other stakeholders, technical and non-technical.This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager.