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Data Scientist

COGNIZANT TECH SOLUTIONS A

Full time
Experience
6–15 years
Location
Chennai
Work mode
Not stated
Salary
₹11L – ₹24L a year estimatetypical for IT Jobs in India, 962 posts
Posted 3 days ago Last checked 1 hr ago

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Role at a glance

Experience
6–15 years
Must-have skills
AWSApache SparkDeep LearningFeature EngineeringGitGoogle Cloud Platform (GCP)

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Job description

Location: Chennai, India

Description - External
Role: AIML Data Science
Location: Pan India
Experience: 6 to 15 Years
Notice Period: Immediate to 90 days
Mode of Interview: In Person
Job Description:

  1. Be a hands on problem solver with consultative approach, who can apply Machine Learning & Deep Learning algorithms to solve business challenges

a. Use the knowledge of wide variety of AI/ML techniques and algorithms to find what combinations of these techniques can best solve the problem
b. Improve Model accuracy to deliver greater business impact
c. Estimate business impact due to deployment of model

  1. Work with the domain/customer teams to understand business context , data dictionaries and apply relevant Deep Learning solution for the given business challenge
  2. Working with tools and scripts for sufficiently pre-processing the data & feature engineering for model development – Python / R / SQL / Cloud data pipelines
  3. Design , develop & deploy Deep learning models using Tensorflow / Pytorch
  4. Experience in using Deep learning models with text, speech, image and video data

a. Design & Develop NLP models for Text Classification, Custom Entity Recognition, Relationship extraction, Text Summarization, Topic Modeling, Reasoning over Knowledge Graphs, Semantic Search using NLP tools like Spacy and opensource Tensorflow, Pytorch, etc
b. Design and develop Image recognition & video analysis models using Deep learning algorithms and open source tools like OpenCV
c. Knowledge of State of the art Deep learning algorithms

  1. Optimize and tune Deep Learnings model for best possible accuracy
  2. Use visualization tools/modules to be able to explore and analyze outcomes & for Model validation eg: using Power BI / Tableau
  3. Work with application teams, in deploying models on cloud as a service or on-prem

a. Deployment of models in Test / Control framework for tracking
b. Build CI/CD pipelines for ML model deployment

  1. Integrating AI&ML models with other applications using REST APIs and other connector technologies
  2. Constantly upskill and update with the latest techniques and best practices. Write white papers and create demonstrable assets to summarize the AIML work and its impact.

· Technology/Subject Matter Expertise
· Sufficient expertise in machine learning, mathematical and statistical sciences
· Use of versioning & Collaborative tools like Git / Github
· Good understanding of landscape of AI solutions – cloud, GPU based compute, data security and privacy, API gateways, microservices based architecture, big data ingestion, storage and processing, CUDA Programming
· Develop prototype level ideas into a solution that can scale to industrial grade strength
· Ability to quantify & estimate the impact of ML models

· Softskills Profile
Curiosity to think in fresh and unique ways with the intent of breaking new ground. Must have the ability to share, explain and “sell” their thoughts, processes, ideas and opinions, even outside their own span of control Ability to think ahead, and anticipate the needs for solving the problem will be important · Ability to communicate key messages effectively, and articulate strong opinions in large forums
· Desirable Experience:
· Keen contributor to open source communities, and communities like Kaggle
· Ability to process Huge amount of Data using Pyspark/Hadoop
· Development & Application of Reinforcement Learning
· Knowledge of Optimization/Genetic Algorithms
· Operationalizing Deep learning model for a customer and understanding nuances of scaling such models in real scenarios
· Optimize and tune deep learning model for best possible accuracy
· Understanding of stream data processing, RPA, edge computing, AR/VR etc
· Appreciation of digital ethics, data privacy will be important
· Experience of working with AI & Cognitive services platforms like Azure ML, IBM Watson, AWS Sagemaker, Google Cloud will all be a big plus
· Experience in platforms like Data robot, Cognitive scale, H2O.AI etc will all be a big plus

Job data: Headcount Labs (headcountlabs.com), ODbL 1.0. The job description belongs to the employer. Location data © OpenStreetMap contributors and Overture Maps.

Key skills

Required

AWSApache SparkDeep LearningFeature EngineeringGitGoogle Cloud Platform (GCP)HadoopMachine LearningMicroservicesMicrosoft AzurePythonREST API DevelopmentSQL

Job market insights

146active AWS jobs in Chennai
11active Apache Spark jobs in Chennai
177active Deep Learning jobs in India
₹11L – ₹24L advertised yearly salary for IT Jobs in India (middle half of 962 posts that show a salary; median ₹17L)
19 more open jobs at COGNIZANT TECH SOLUTIONS A

Most IT Jobs posts in Chennai ask for 3–6 years of experience (43% of 472 that say).

Hiring most for IT Jobs in Chennai

  • Kyndryl28 open jobs
  • Extreme Networks17 open jobs
  • WPP15 open jobs

Jobs asking for AWS in Chennai also ask for

  • Python64%
  • Microsoft Azure57%
  • Google Cloud Platform (GCP)46%
  • CI/CD45%
  • Java37%

From live job posts on CoreHRx, updated 6 Nov 2026. Skill figures count posts that list their skills; salary figures only posts that show a salary.

Questions about this job

What is the salary for this Data Scientist job?

The post does not state the pay. As an estimate, comparable posts on CoreHRx advertise ₹11L – ₹24L a year (typical for IT Jobs in India, 962 posts).

How much experience does this job need?

The post asks for 6–15 Yrs experience.

Where is this job based?

In Chennai.

What kind of job is this?

It is a full time job.

This page is for Indian job seekers preparing for cloud engineer, DevOps, backend and solutions architect roles that list AWS as a skill, whether you are a fresher with a first certification or an experienced engineer moving into a senior role. It covers 60 questions in three levels: core services and concepts, then design and configuration choices for one to three years of experience, and finally scenario, security, cost and troubleshooting questions asked in senior rounds. Read each answer, explain it aloud in your own words, and try the CLI commands in a practice account with a billing alert set.

Questions you may be asked

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  2. Explain the AWS shared responsibility model.
  3. What is Amazon EC2, and how do you read an instance type name like m7g.large?
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