Jobs · Engineering · Illinois

Staff Data Scientist

Ritchie Bros. · Westchester, IL · 2 mo ago
HybridEngineeringFull-time

Responsibilities

  • Lead end-to-end data science projects, from problem framing and data exploration through model development, deployment, and monitoring
  • Design and build supervised, unsupervised, and deep learning models to solve high-impact business problems
  • Develop AI agentic applications and LLM-powered solutions to automate workflows and unlock new capabilities
  • Design and analyze experiments (A/B testing, causal inference) to measure model and product impact
  • Perform feature engineering, data validation, and quality assurance across large, complex datasets
  • Partner with data engineering and ML platform teams to productionize models and ensure scalability, reliability, and monitoring
  • Translate ambiguous business questions into well-scoped data science problems and communicate findings to technical and non-technical stakeholders
  • Mentor junior data scientists and analysts, and contribute to best practices across the data science team

Requirements

  • 5–7 years of experience building and deploying production machine learning models, including supervised, unsupervised, and deep learning approaches
  • Advanced proficiency in Python and SQL, with deep experience in ML libraries such as scikit-learn, PyTorch or TensorFlow, pandas, and NumPy
  • Hands-on experience building AI agentic applications using LangChain, LangGraph, or similar frameworks, including integration with LLMs and external tools/APIs
  • Hands-on experience with the full ML lifecycle: feature engineering, model training, hyperparameter tuning, evaluation, deployment, and monitoring
  • Strong foundation in statistics, experimental design (A/B testing), and core ML algorithms (gradient boosting, neural networks, clustering, dimensionality reduction)
  • Experience working with large-scale datasets using distributed computing frameworks (Spark, Dask) and cloud platforms (AWS, Azure, or GCP)
  • Proven ability to translate ambiguous business problems into technical solutions and communicate results to both technical and non-technical stakeholders
  • Experience mentoring junior data scientists in an Agile environment

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