AWS Data Engineer

00064454733

Date published Sept 18 2026
Location Chennai / India
Job category Technology & Engineering
Work model Hybrid

Key Responsibilities

Design, develop, and maintain scalable data pipelines using Python and PySpark.
Build and manage ETL/ELT workflows for processing structured and unstructured data.
Develop and optimize Spark applications to handle large-scale datasets efficiently.
Implement cloud-native data solutions using AWS services.
Design and maintain Data Lakes on AWS.
Perform data ingestion from multiple sources including APIs, databases, files, and streaming platforms.
Monitor, troubleshoot, and optimize data workflows for performance and reliability.
Ensure data quality, integrity, security, and governance standards are followed.
Implement automation and orchestration of data workflows using scheduling tools.
Collaborate with cross-functional teams for requirement gathering and solution design.
Conduct code reviews, unit testing, and performance tuning.
Prepare technical documentation and deployment procedures.
Support production incidents and perform root cause analysis.

Mandatory Skills

Strong expertise in Python
Hands-on experience with PySpark
Proficiency in SQL and query optimization

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.

Benefits that help you thrive and grow

Our benefits program is built with you in mind—so you can enjoy a fulfilling, balanced and healthy life.

a blue line drawing of a plant with leaves

Financial wellbeing

We regularly review market data to ensure compensation reflects the value you bring. Your benefits extend beyond pay and may include retirement plans, financial education, etc.

Physical and mental health

We empower you to prioritize your wellbeing through paid time off, flexible working where possible, healthcare plans, counselling, our Mental Health Allyship program and more.

Build The Career You Want Midnight Blue RGB

Your career, your way

With 350,000+ roles at Cognizant, you’ll have opportunities explore new technologies, industries and locations—and build the skills you need to grow your career.

Making A Meaningful Impact Midnight Blue RGB

Real-world impact

Think about the biggest brands you rely on. Chances are, they rely on us to help strengthen their business. Here, you’ll turn bold ideas into solutions that improve lives everywhere.

Your path to Cognizant

Here’s what you can expect from our hiring process. Please keep in mind that it may vary by role and location. Explore our FAQs to learn more.

a person sitting at a table using a laptop

Step 1: Apply to the right opportunity

Find an open role that matches your skills and career goals and show us why you’re the person for the job. Don’t see the right opportunity? Consider joining our Talent Community.

a person holding a tablet and talking on the phone

Step 2: Connect with your recruiter

If one of our recruiters sees a fit, they’ll set up a short intro call to learn more about you and how your experiences and skills match the role.

a person smiling at a table with a laptop

Step 3: Show off your skills

If you and our team would like to continue the process, you’ll interview with our hiring team. Some roles may also require technical assessments and/or client interviews.

a group of people sitting around a table

Step 4: Decision time

Our team will then review each candidates’ potential to succeed in the role. This step may take some time because we want to find the right fit for both you and us—but you can count on us to keep you updated.

a person with long blonde hair wearing a white shirt with orange and purple flowers

What I value most about working at Cognizant is the opportunity to innovate while delivering real business impact. My role allows me to combine strategy, technology, and collaboration across global teams, which makes every project meaningful. The support for continuous learning and innovation has been instrumental in my growth.

Cognizant has one of the best learning ecosystems you can ask for. From sponsored certifications to training platforms to mentorship, we have all that we need to grow.

Cognizant offers me more than a job; it offers a community. We support each other, collaborate across borders and celebrate wins together. If you’re looking for a culture that values flexibility, diversity and growth, this is the place to be.

When I first joined, I was quiet and hesitant to share my thoughts. The leadership programs and the mentoring I’ve received have helped me find my voice and grow as a leader.

I’ve had the chance to work on impactful projects and shadow colleagues, all while getting involved in internal initiatives. The world is your oyster at Cognizant—you just need to take advantage of it!

Change region

Americas

India

Europe, Middle East, and Africa

Asia Pacific and Japan