Data Scientist, Machine Learning
AQR · Greenwich, CT
About this role
**Data Scientist, Machine Learning** **About AQR Capital Management** AQR is a global investment management firm built at the intersection of financial theory and practical application. We deliver superior, long-term results by filtering market noise and developing ideas that stand up to rigorous testing. Leaders in alternative and traditional strategies since 1998. **Your Role** Bridge between data engineering and quantitative research. You'll ensure research datasets are accurate, traceable, and ready for machine learning by developing robust data preparation and quality workflows. **What You'll Do** • Partner with quantitative researchers to understand ML project needs and produce fitting data • Transform raw structured and unstructured data into research-ready datasets • Perform feature generation and deliver prepared datasets for modeling • Resolve tagging, entity-matching, and linkage issues • Build data quality assurance and monitoring workflows • Build point-in-time mappings and knowledge graphs for corporate events • Examine and onboard alternative datasets • Ensure datasets are clean, traceable, and reliable for trading strategies • Work across multiple researchers and concurrent projects • Communicate clearly with researchers and engineering partners **Required Qualifications** • 4+ years relevant work experience • Strong Python (pandas, NumPy), SQL, and PostgreSQL skills • Experience with structured and unstructured/textual data • Data quality, validation, monitoring, and profiling experience • Git, PyTest, CI/CD, and API development experience • Strong visualization skills • Ability to manage multiple concurrent initiatives **Preferred Qualifications** • scikit-learn, statistics, or advanced modeling experience • Entity resolution, entity matching, or knowledge graphs • LLM API experience for investigation and feature generation • AWS experience (S3, Batch) • Distributed computing and large-scale data processing • PyTorch experience • Financial services or quantitative research background **Compensation & Benefits** $180,000 - $200,000 + annual discretionary bonus Comprehensive benefits including PTO, medical/dental/vision, 401(k) **Equal Opportunity Employer**
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