Staff ml scientist

1 month ago

Bengaluru, India Visa Full time
Company Description
Visa is a world leader in payments and technology, with over 259 billion payments transactions flowing safely between consumers, merchants, financial institutions, and government entities in more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable, and secure payments network, enabling individuals, businesses, and economies to thrive while driven by a common purpose – to uplift everyone, everywhere by being the best way to pay and be paid.
Job Description
The Sr. ML Scientist / Staff ML Scientists will work with a team to conduct extraordinary research on data analytics and contribute to the long-term research agenda in large-scale data analytics and machine learning, as well as deliver innovative technologies and insights to Visa's strategic products and business. Our team is focusing on building a new product suite for Visa’s real time payments options This will have a fraud-management focus and be scaled across many markets at Visa. This suite will also bring ‘real-time fraud monitoring’ into play using the latest in Machine Learning & Deep Learning technologies. We are seeking ML Scientists that come from a wide array of backgrounds with the curiosity about creating something new and exciting for Visa.
Essential Functions
Formulate business problems as technical data problems while ensuring key business drivers are collected in collaboration product stakeholders.
Work with product engineering to ensure implement-ability of solutions. Deliver prototypes and production code based on need.
Experiment with in-house and third-party data sets to test hypotheses on relevance and value of data to business problems.
Build needed data transformations on structured and un-structured data.
Build and experiment with modeling and scoring algorithms. This includes development of custom algorithms as well as use of packaged tools based on machine learning, analytics, and statistical techniques.
Devise and implement methods for adaptive learning with controls on efficiency, methods for explaining model decisions where vital, model validation, A/B testing of models.
Devise and implement methods for efficiently monitoring model efficiency and performance in production.
Devise and implement methods for automation of all parts of the predictive pipeline to minimize labor in development and production.
Contribute to development and adoption of shared predictive analytics infrastructure.
This is a hybrid position. Hybrid employees can alternate time between both remote and office. Employees in hybrid roles are expected to work from the office 2-3 set days a week (determined by leadership/site), with a general guidepost of being in the office 50% or more of the time based on business needs.
Qualifications:
• 7 years of relevant work experience with a Bachelor’s degree or at least 2 years of work experience with an Advanced degree (e.g. Masters, MBA, JD, MD) or 0 years of work experience with a Ph D, OR 8+ years of relevant work experience.
Preferred Qualifications:
• 7 or more years of work experience with a Bachelor’s Degree or 4 or more years of relevant experience with an Advanced Degree (e.g. Masters, MBA, JD, MD) or up to 3 years of relevant experience with a Ph D
• Relevant coursework in modeling techniques such as logistic regression, Naïve Bayes, SVM, decision trees, or neural networks.
• Ability to program in one or more scripting languages such as Perl or Python and one or more programming languages such as Java, C++, or C#.
• Experience with one or more common statistical tools such SAS, R, KNIME, MATLAB.
• Deep learning experience with Tensor Flow is a plus.
• Experience with Natural Language Processing is a plus.
• Experience working with large datasets using tools like Hadoop, Map Reduce, Pig, or Hive is a must.
• Publications or presentation in recognized Machine Learning and Data Mining journals/conferences is a plus.
Additional Information
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 also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

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