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CACI International Logo

Sr. Data Scientist – AI/ML & LLM Specialist

CACI International

$90,300 - $189,600
Aug 20, 2025
Riverside, CA, US
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CACI is seeking a highly skilled Sr. Data Scientist specializing in AI/ML and Large Language Models (LLMs) to join our team to develop and deploy advanced AI/ML models, with a particular focus on LLMs, in enterprise or government environments.

Requirements

  • 5+ years of experience developing and deploying AI/ML models in enterprise or government environments
  • Hands-on experience fine-tuning and applying LLMs for NLP and generative tasks
  • Strong programming skills in Python
  • Proficiency with ML frameworks such as PyTorch, TensorFlow, or Scikit-learn
  • Proven experience in data analytics, feature engineering, and building end-to-end ML pipelines
  • Familiarity with vector databases and retrieval-augmented generation (RAG) pipelines
  • Experience integrating AI/ML models into secure or cloud-hosted environments

Responsibilities

  • Develop, fine-tune, and deploy AI/ML models, with a focus on Large Language Models (LLMs) such as GPT, LLaMA, or Claude
  • Design and implement NLP and generative AI solutions for complex enterprise or government projects
  • Build end-to-end machine learning pipelines, including data preprocessing, feature engineering, model training, and deployment
  • Integrate AI/ML models into secure or cloud-hosted environments (AWS, Azure, etc.)
  • Work with vector databases and develop retrieval-augmented generation (RAG) pipelines
  • Ensure AI/ML solutions comply with RMF, STIGs, and DoD cybersecurity standards
  • Stay current with the latest advancements in AI/ML and LLM technologies

Other

  • Active DoD Security Clearance (Secret or higher) must be obtainable
  • Must be willing to work on site in Norco, CA
  • Current CompTIA Security+ (CE) certification
  • Knowledge of RMF, STIGs, and DoD cybersecurity compliance practices
  • Excellent documentation, collaboration, and communication skills