Senior Data Scientist

Job Responsibilities: Collaborating with business users to understand their key priorities and use cases; proposing and developing solutions using data science and/or Generative AI techniques to drive business value

Researching emerging AI/data science techniques and identifying relevant ones to explore and adopt (e.g. Agentic, LLM, Predictive, Fraud/Anomaly Detection, Text Analytics, Customer Segmentation)

Data wrangling & analysis - preprocessing, cleaning and feature engineering

Supporting the daily operations and maintenance of deployed data science models and products

Developing backend APIs and services to support AI model deployment and integration

Building frontend interfaces and user experiences for AI-powered applications

Documenting changes to existing products

Reviewing and implementing fixes for reported security vulnerabilities;

Job Requirements: Able to understand and apply a range of AI/ML techniques for regression and classification

Familiar with popular python packages ( e.g. pandas, matplotlib, scikit-learn, XGBoost, NLTK, spaCy )

Understanding of LLM concepts (e.g. context windows, embeddings, chunking, token management) and architectures (e.g. RAG)

Experience with context engineering techniques and prompt optimization strategies

Proficient in git, SQL

Proficient in Business Intelligence tools (e.g. Tableau, Qlik, MS PowerBI, Microstrategy)

Bonus Skillsets Proficient in modern programming languages (e.g. typescript, C#)

Experience in cloud platform and services preferably in AWS

Experience in Docker/Kubernetes

Experience with web frameworks and full-stack development, including backend frameworks (e.g. FastAPI, Flask, Express.js) and RESTful API development, and frontend technologies (e.g. React, Vue.js, HTML/CSS, TypeScript)

Experience with LLM frameworks (e.g. LangChain, LlamaIndex, Hugging Face Transformers)

Knowledge of vector databases and embedding techniques (e.g. Pinecone, Chroma, FAISS)

Understanding of AI agent frameworks and multi-agent systems

Strong presentation skills and ability to explain technical concepts clearly to a non-technical audience

Proficient in statistical software tools (e.g. R, SAS)

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About Cognizant

Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.

Additional employment information Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.

Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.

If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] for roles based in the Americas or [email protected] for roles based in India.