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Principal Data Scientist

Fidelity Investments

Salary not specified
Sep 11, 2025
Westlake, TX, USA • Smithfield, RI, USA • Merrimack, NH, USA
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Fidelity Workplace Investing is seeking to support initiatives around personalization and customization

Requirements

  • Statistical and data science programming with proficiency in Python and SQL
  • Experience writing testable, modular code
  • Expert in training regression and classification models using typical ML algorithms
  • Extensive experience in developing and/or deploying scalable AI solutions using LLM, knowledge graph, reinforcement learning, optimization, and/or real-time models
  • Data extraction and feature engineering
  • Creating model documentation
  • Explaining model output to non-technical audiences

Responsibilities

  • exploratory analysis
  • feature engineering
  • experimentation
  • forecasting
  • numerical optimization
  • real time model and LLM
  • train machine learning models

Other

  • PhD with 2+ years of working experiences or Master’s Degree with 5+ years working experiences in a quantitative field
  • Committed to continuous learning and able to pick up new knowledge quickly
  • Independently lead data science projects from end to end
  • Conduct technical reviews and mentor junior data scientists
  • Most roles at Fidelity are Hybrid, requiring associates to work onsite every other week