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MercuryMercury

Staff Data Scientist

Staff Data Scientist focused on building and operating machine learning systems for real-time fraud detection and financial crime risk. The role requires 7+ years working with large datasets, strong Python and SQL skills, production ML experience, and technical leadership.

About the job

Responsibilities

  • Build, validate, and deploy machine learning models to identify and prevent fraud in real time.
  • Document, test, and monitor models to support reproducibility and robustness.
  • Ensure data quality and reliability across pipelines and tools.
  • Collaborate with Risk Strategy to develop model inputs and applications, and with Engineering to optimize deployment and observability.
  • Act as a technical lead by prototyping, iterating on, and codifying best practices while helping teammates adopt them.
  • Drive strategic alignment across teams with differing roadmaps, timelines, or architectures.

Requirements

  • 7+ years of experience working with and analyzing large datasets to solve problems and drive impact.
  • 5+ years of machine learning experience.
  • Proficiency in SQL and experience using it to understand and manage imperfect data.
  • Proficiency in Python, statistical modeling, and machine learning.
  • Experience deploying and monitoring machine learning models in production.
  • Ability to lead and empower others while delivering independently and developing teammates.
  • Comfort working in a fast-paced environment with evolving priorities.

Nice-to-haves

  • 1+ years of relevant risk experience.
  • Familiarity with large language models or generative AI applications for risk or fraud detection.
  • Experience with modern data pipeline and ETL tools such as dbt.
  • Experience with model governance in finance or other regulated industries.
  • Experience building zero-to-one solutions in ambiguous or greenfield problem spaces.

Compensation

  • US employees: target new-hire base salary of $239,000–$298,800 USD.
  • Canadian employees: target new-hire base salary of $225,900–$282,400 CAD.
  • Total rewards include base salary, equity, and benefits.

Skills

Python, SQL, Machine Learning, Statistical Modeling, Model Deployment, Model Monitoring, Fraud Detection, Risk Modeling, ETL, dbt, LLMs, Generative AI, Data Pipelines, Model Governance, Data Quality

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