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Principal Data Scientist (Chicago)

Fitch Ratings

$170,000 - $200,000
Jan 2, 2026
Chicago, IL, US
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Fitch Group is seeking a principal data scientist to solve business and technical problems related to Generative AI, Machine learning, Deep Learning and Data science solutions across the organization.

Requirements

  • Proficiency in programming languages such as Python, and experience with machine learning frameworks such as PyTorch, TensorFlow or similar.
  • Strong understanding of natural language processing (NLP) techniques and experience with large language models like GPT, BERT, or similar.
  • Proficiency in machine learning and deep learning algorithms such as Neural networks, multi-class classifications, decision trees, support vector machines etc.
  • Prior experience working on building Gen AI frameworks and leveraging and/or finetuning LLM’s.
  • Exposure/experience in containerization technologies like docker, Kubernetes, AWS EKS etc.
  • Knowledge of popular Cloud computing vendor (AWS and Azure) infrastructure & services e.g. AWS Bedrock, AWS S3, AWS Sage maker, Azure AI search, Azure OpenAI, Azure blob storage etc.
  • Strong understanding of data science concepts and experience with data science tools and technologies

Responsibilities

  • Work closely as part of the product squads to build, integrate, and deploy GenAI and data science solutions.
  • Lead and manage development and research projects focused on generative AI, deep learning, machine learning, NLP, and large language models.
  • Design, develop, and deploy state-of-the-art machine learning models and algorithms that leverage deep learning, NLP and computer vision techniques.
  • Collaborate with cross-functional teams to identify opportunities for AI-driven solutions and integrate them into existing systems and workflows.
  • Conduct experiments to validate the performance and effectiveness of developed models and iterate on improvements based on results.
  • Effectively communicate advanced data science/ML concepts in simple language to the business stakeholders always focusing on its applicability to Fitch business
  • Collaborate with MLEs to identify innovative machine learning and Gen AI solutions that leverage data to meet business goals.

Other

  • Ph.D. or master’s degree in computer science, Data Science, Machine Learning, or a related field.
  • A minimum of 7 years of experience in data science, with a strong focus on generative AI, deep learning, machine learning, NLP, and large language models.
  • Excellent problem-solving skills and the ability to think critically and creatively.
  • Strong communication and leadership skills, with a demonstrated ability to work effectively in a collaborative environment.
  • Hybrid Work Environment: 2 to 3 days a week in office required based on your line of business and location