They are looking for a Senior Data Scientist to join their team :) This role is hybrid in Greenwich, CT. You will serve as a bridge between data engineering and quantitative research. Working directly with researchers, you will also be responsible for ensuring research datasets are accurate, traceable, and ready for machine learning by developing robust data preparation and quality workflows. Your responsibility is to deliver clean, reliable, project-specific datasets and features to the researcher.
Partner directly with quantitative researchers to understand the needs of a specific machine learning project and collaboratively produce data that best fits the model and project Transform raw structured and unstructured data into project-specific, research-ready datasets Resolve tagging, entity-matching, and linkage issues across signals, textual data, and securities Build data quality assurance, quality monitoring, and profiling workflows through programmatic checks, LLM reviews where appropriate, targeted manual inspection, and feedback-driven iterative refinement Work across different researchers and potentially concurrent projects as priorities and the scope of the role evolve 4+ years of relevant work experience
Strong Python programming skills, including hands-on experience with pandas and NumPy
Strong SQL skills and practical experience with PostgreSQL
Experience working with both structured data and unstructured or textual data
Experience with data quality, validation, monitoring, and profiling
Ability to reason carefully through edge cases, protect data integrity, and maintain clear documentation of data definitions, transformations, and quality checks
Experience building LLM-based featurization workflows, including iterative refinement, validation, and automated testing
Experience with Claude Code, Codex, or AWS Bedrock Experience with AWS, including S3 and Batch Experience with distributed computing and large-scale data processing Exposure to data governance, data cataloging, or related best practices Prior experience in financial services, trading, quantitative research, or another research-driven environment
Senior Data Scientist - E-Commerce in greenwich at Unknown Company
This position is listed as full time and hybrid.