✦ Luna Orbit — AI & Machine Learning

Principal Associate, Data Scientist

at Capital One Financial

📍 2 Locations Unknown 💰 $147K – $167K USD / year Posted April 15, 2026
Salary $147K – $167K USD / year
Type Not Specified
Experience lead
Exp. Years Not specified
Education Not specified
Category AI & Machine Learning

Principal Associate Data Scientist role focused on fraud prevention using knowledge graphs and graph algorithms. You will partner with cross-functional teams to build, validate, and implement graph-based machine learning solutions.

  • Leverage Python, Conda, AWS, Spark, Gremlin, NeptuneDB to build knowledge graphs and graph algorithms
  • Pilot graph modeling algorithms across design, training, evaluation, validation, and implementation
  • Connect modeling expertise to fraud prevention business goals
  • Partner with cross-functional teams to deliver fraud defenses
  • Improve customer protection data science solutions

Build knowledge graphs and graph algorithms using Python, SQL, and AWS, leveraging tools such as Conda, Spark, Gremlin, and NeptuneDB. Drive model development end-to-end from design through training, evaluation, validation, and implementation for production fraud defenses.

The ideal candidate is a data scientist with strong hands-on experience building knowledge graphs and graph algorithms, using Python and SQL with cloud computing on Amazon Web Services. They are experienced across the full model lifecycle (design, training, evaluation, validation, and implementation) and apply machine learning techniques to fraud prevention at scale.

PythonSQLAmazon Web ServicesAWSSparkknowledge graphsgraph algorithmsgraph modeling algorithms
GremlinNeptuneDB
PythonCondaAWSAmazon Web ServicesSparkGremlinNeptuneDBSQL
PythonSQLCondaAWSAmazon Web ServicesSparkGremlinNeptuneDBknowledge graphsgraph algorithmsgraph modeling algorithmsmachine learning technologiesfraud prevention
PythonCondaAmazon Web ServicesAWSSparkGremlinNeptuneDBgraph algorithmsknowledge graphsgraph modeling algorithmsSQLmachine learning technologiesmodel trainingmodel evaluationmodel validationmodel implementationfraud preventionfraud prevention strategycustomer protection data sciencedata-driven decision-making
customer firstinnovationresearch and evaluation of emerging technologiestechnical comfort with open-source languagescross-functional collaborationpartnering with data scientistssoftware engineersbusiness analystsand product managerstranslating complexity into business goalsstakeholder communication
Industry Banking
Job Function Develop and implement graph-based machine learning models for fraud prevention.
Role Subtype Data Scientist
Tech Domains Python, Amazon Web Services, Linux, SQL / PostgreSQL, AI & Machine Learning
Principal AssociateData ScientistPythonSQLCondaAWSAmazon Web ServicesSparkGremlinNeptuneDBknowledge graphsgraph algorithmsgraph modelingmachine learningfraud preventionmodel developmenttrainingevaluationvalidationimplementationcross-functionalopen-source

Must have hands-on experience with Python and SQL, Must have experience using AWS (Amazon Web Services)

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