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Senior Machine Learning Engineer- Generative AI

Visa

$130,700 - $184,400
Sep 15, 2025
Foster City, CA, US
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Visa is looking for a Senior Machine Learning Engineer to join their Generative AI team to invent, design, build, and test products that reach a global customer base, specifically focusing on Large Language Model (LLM) applications to shape the digital future of payments.

Requirements

  • Experience in at least one of the following: Python, Golang, Java, or C/C++
  • Familiarity with web service standards and related patterns (REST, gRPC)
  • Experience implementing solutions for low-latency, distributed services using open standard technologies.
  • Exposure to leading-edge areas such as Machine Learning, Big Data, Distributed Systems or SRE.

Responsibilities

  • creating applications based on the Retrieval-Augmented Generation (RAG) framework
  • developing efficient inferencing algorithms
  • fine-tuning the LLM to cater to various applications
  • leveraging various machine learning stacks to enhance system efficiency
  • researching new techniques to advance our LLM applications
  • collaborating with cross-functional teams within the organization
  • documenting processes and workflows and sharing insights with the team

Other

  • This is a hybrid position. Expectation of days in office will be confirmed by your Hiring Manager.
  • This position requires travel 5% of the time.
  • This position will be performed in an office setting. The position will require the incumbent to sit and stand at a desk, communicate in person and by telephone, frequently operate standard office equipment, such as telephones and computers.
  • Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.
  • Visa will consider for employment qualified applicants with criminal histories in a manner consistent with applicable local law, including the requirements of Article 49 of the San Francisco Police Code.