Senior Data Scientist, Generative AI & LLM Engineering

Cognizant

Confirmed live yesterday High trust

Quick summary

Work type
On-site
Location
Chicago, IL
Salary
$133,000–$156,500 / yr
Posted
11 days ago
Freshness
Confirmed live yesterday

Market check

Salary context

Below market

How this pay compares to similar roles

Similar $197k
This role $145k
$121k $247k
below market most similar roles pay here above market

This role pays less than 94% of similar roles. Most pay $162,000–$232,500 — the blue band above. At the midpoint, this role pays about $145k versus about $197k for comparable roles.

Based on 240 similar postings.

Employer

About Cognizant

Cognizant is a multinational IT services and consulting company offering digital transformation, technology, and business process services. It serves clients across financial services, healthcare, manufacturing, and other industries worldwide.

Cognizant currently has 341 open roles on FindRole.

Listed pay typically runs $100,000–$133,500 across 219 roles with salary data.

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View all roles at Cognizant

At a glance

TL;DR · Senior Data Scientist, Generative AI & LLM Engineering

The Senior Data Scientist – Generative AI & LLM Engineering joins the Artificial Intelligence and Analytics practice to design, tune, evaluate, and deploy enterprise-scale AI and machine learning solutions. You will perform advanced exploratory data analysis and statistical analysis to identify actionable business insights while building generative AI systems, including RAG applications, AI agents, and knowledge-driven systems. Key responsibilities include fine-tuning, benchmarking, and optimizing large language models for latency, accuracy, and cost efficiency. You will develop MLOps and LLMOps pipelines for model versioning and monitoring across cloud and on-premises environments. Required expertise includes Python, Pandas, NumPy, Scikit-learn, PyTorch, and TensorFlow. You must demonstrate proficiency in vector databases, prompt engineering, and model evaluation frameworks to solve complex business problems while ensuring responsible AI and data governance standards.

What does a Data Scientist earn?

Median $171000 from 347 postings across 66 companies.

See salary data

What you'll do

  • Perform advanced exploratory data analysis and statistical analysis to identify actionable business insights.
  • Design, develop, evaluate, and deploy machine learning models for predictive analytics and enterprise use cases.
  • Build Generative AI and LLM-based solutions including RAG applications, AI agents, and enterprise search.
  • Fine-tune, benchmark, and optimize LLMs for quality, latency, accuracy, scalability, and cost efficiency.
  • Design model evaluation frameworks covering performance, relevance, hallucination, safety, and robustness.
  • Develop and operationalize MLOps/LLMOps pipelines for model experimentation, versioning, deployment, and monitoring.
  • Contribute to end-to-end AI/ML architecture across cloud and on-premises environments.
  • Ensure AI solutions follow enterprise security, data governance, and responsible AI standards.

What we're looking for

  • 6+ years of experience in Data Science, Machine Learning, AI Engineering, or Advanced Analytics roles.
  • 3+ years of hands-on experience developing and deploying production-grade machine learning models.
  • Expert knowledge of Exploratory Data Analysis, statistical methods, feature engineering, and machine learning algorithms.
  • Hands-on experience with Generative AI and LLMs, including RAG, prompt engineering, embeddings, and vector databases.
  • Proficiency in Python and ML/AI frameworks such as Pandas, NumPy, Scikit-learn, PyTorch, or TensorFlow.
  • Experience with LLM fine-tuning, model benchmarking, inference optimization, and responsible AI practices.
  • Familiarity with AI agents, multi-agent systems, MLOps/LLMOps, and enterprise AI platform architecture.
  • Experience with major cloud AI/ML platforms such as Azure, AWS, or GCP.

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