The Principal Data Scientist role at Fidelity Institutional's AI Center of Excellence focuses on leading complex data science initiatives and ensuring rigorous decision-making processes. This position emphasizes hypothesis-driven analysis and causal reasoning, with the Principal Data Scientist acting as a mentor and scientific authority within the team. The role is not about building production systems but rather about ensuring the integrity and trustworthiness of analytical models. The team collaborates closely with various business units to uphold scientific rigor and analytical truth.

• Master's or PhD in Statistics, Economics, Mathematics, Operations Research, Computer Science, or a related quantitative discipline
• 10–14+ years of experience in data science, quantitative research, or advanced analytics
• Proven track record of owning complex analytical problems end-to-end
• Deep expertise in statistics, probability, and experimental design
• Strong command of causal inference and incrementality measurement
• Advanced proficiency in Python for analysis and modeling
• Strong SQL skills and experience working with large analytical datasets
• Hands-on proficiency with large language models and generative AI

• Lead hypothesis-driven analyses to answer high-impact strategic and business questions
• Design, develop, and evaluate statistical, econometric, and machine learning models
• Define how success should be measured for complex analytics and AI-enabled initiatives
• Design robust evaluation frameworks including offline validation and back-testing
• Design and review experiments including A/B tests and observational studies
• Develop probabilistic and causal models to inform prioritization and intervention strategies
• Translate complex quantitative results into clear, decision-oriented narratives for senior stakeholders
• Mentor senior and mid-level data scientists through technical guidance and peer review

• Fidelity offers competitive compensation, annual bonuses, retirement contributions, comprehensive healthcare coverage, parental leave, tuition assistance, wellness programs, and extensive professional development opportunities.