Visa Technology & Operations LLC, a Visa Inc. company, needs a Data Engineer - Sr. Consultant (multiple openings) in Foster City, CA to be responsible for building critical risk and fraud prevention applications and services at Visa. This includes idea generation, architecture, design, development, and testing of products, applications, and services that provide Visa clients with solutions to detect, prevent, and mitigate fraud for Visa and Visa client payment systems. The role involves designing and building software solutions that leverage data to solve business problems, designing brand-new software solutions, and refactoring existing functionality for performance and maintainability, while continuing to work on ways to increase efficiency and provide better solutions to our customers. The position requires leading hands-on software engineering activities, including POCs, design, documentation, development, and testing of new functionality.