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REQUIREMENT_ID_78 β€’ 3-DAY_ACTIVE_POLICY

Data Analyst

Company
Company Cognizant
Type
Opportunity Type Full-Time Job
Salary
Stipend / Salary 4.5 LPA
Location
Location Bengaluru, Karnataka
Posted Date
Posted Date Today
Python Excel VBA Tableau Power BI Data Analysis SQL Analytical Thinking Problem Solving Communication
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Aptitude Practice Questions Open Resource β†—
Helps you prepare for the online assessment covering logical, quantitative, and verbal sections common in Cognizant's first round.
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Cognizant Recruitment Process Insights Open Resource β†—
Provides detailed experiences of candidates who have cleared Cognizant's interview stages, useful for setting expectations.
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Data Analyst Interview Guide Open Resource β†—
Covers role‑specific topics, sample questions, and preparation tips tailored for Cognizant's data analyst position.
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Algorithm Practice Problems Open Resource β†—
Offers a wide range of coding problems to sharpen Python and problem‑solving skills needed for technical rounds.

Any graduate (B.Tech/B.E., B.Sc., BCA, MCA preferred) with a minimum of 60% aggregate. No active backlogs at the time of joining. Freshers and candidates with up to 1 year of experience are eligible. Must have strong analytical aptitude and basic knowledge of data handling tools.

1
Round 1: Online aptitude test (logical reasoning, quantitative, verbal)
2
Round 2: Technical interview (Python, Excel, Tableau concepts, case study)
3
Round 3: HR interview (fitment, communication, career goals)
Cognizant is a global leader in professional services, helping Fortune 500 companies navigate digital transformation across banking, healthcare, retail, and technology sectors. With a workforce of over 350,000 employees spread across more than 40 countries, the firm combines deep industry expertise with cutting‑edge technology to deliver end‑to‑end solutions. Its culture emphasizes continuous learning, collaboration, and innovation, making it a preferred destination for fresh talent looking to build a long‑term career in the tech services space. The Data Analyst role at Cognizant Bengaluru is designed for recent graduates who are eager to turn raw data into strategic insights. Working in a hybrid environment, the analyst will partner with cross‑functional teams to understand business problems, design analytical solutions, and communicate findings through compelling visualizations. This position offers exposure to a variety of industries and the chance to work on real‑world projects that influence decision‑making at senior levels. Key responsibilities include: 1. Conducting Exploratory Data Analysis (EDA) to identify trends, outliers, and actionable patterns. 2. Building robust data models and analytical frameworks using Python to standardize calculations and support predictive analytics. 3. Designing and maintaining advanced Excel workbooks with VBA macros to automate repetitive tasks and ensure data accuracy. 4. Creating interactive Tableau dashboards and visual analytics that clearly convey key performance indicators (KPIs) to stakeholders. 5. Implementing data quality checks and reconciliation processes using Python, Excel, and other validation tools. 6. Reviewing existing data workflows, pinpointing bottlenecks, and recommending automation strategies for efficiency gains. 7. Gathering requirements from business units, translating them into analytical problems, and delivering solutions that meet expectations. 8. Collaborating with peers and senior analysts in a hybrid setting to share knowledge and best practices. 9. Documenting methodologies, assumptions, and results to maintain transparency and reproducibility. 10. Staying updated with emerging tools and techniques in data analytics to continuously improve the analytical stack. The tech stack for this role includes Python (pandas, numpy, matplotlib), advanced Excel with VBA, Tableau, Power BI, and basic SQL for data extraction. Cognizant provides a clear growth path: analysts can progress to Senior Analyst, Data Scientist, or Analytics Manager roles, with opportunities to specialize in domains such as AI/ML, cloud analytics, or business intelligence. Joining Cognizant means access to world‑class training platforms, mentorship from industry veterans, and a supportive environment that values curiosity and impact. The company’s commitment to employee development, combined with competitive compensation and a vibrant work culture, makes it an ideal launchpad for aspiring data professionals.

Cognizant β€” Data Analytics & SQL Interview Guide

Previously asked questions, exam syllabus, coding benchmarks & round strategy.

APTITUDE & LOGIC πŸ“–
Aptitude Practice Questions & Online Mock Tests

Curated logical, quantitative, and verbal reasoning problems to sharpen reasoning skills required for the initial screening test.

Open Resource β†—
COMPANY GUIDE 🎯
Cognizant Interview Preparation Corner

Comprehensive guide covering typical interview formats, common questions, and preparation tips for Cognizant and off-campus tech roles.

Open Resource β†—
MOCK TESTS & PAPERS πŸ“
Comprehensive Interview Prep Resources & Syllabus

Collection of previous year questions, company-specific test patterns, and interview experiences for technical and HR rounds.

Open Resource β†—
CODING PRACTICE πŸ’»
Algorithm and Data Structure Problem Set

Practice problems to improve coding proficiency and algorithm problem-solving speed for technical rounds.

Open Resource β†—
Round 1: Online Assessment (OA)
Aptitude, Quantitative Logic & 2 Coding Problems
Focus on accuracy and speed. Practice arrays, strings, and standard arithmetic puzzles.
Round 2: Technical Interview 1
Core Tech Stack (Python, Excel, VBA, Tableau, Power BI, Data Analysis, SQL, Analytical Thinking, Problem Solving, Communication) & Live Code Tracing
Explain your thought process aloud. Analyze time & space complexities before coding.
Round 3: System Design & Problem Solving
Database Schemas, APIs & Architecture Basics
Clarify edge cases, diagram schemas cleanly, and discuss scalability trade-offs.
Round 4: HR & Cultural Fit Discussion
Cognizant Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
What is the difference between WHERE and HAVING clauses in SQL? Answer β–Ό
Model Answer: WHERE filters rows before any groupings are applied, while HAVING filters aggregated groups after GROUP BY has executed.
Explain SQL Window functions: ROW_NUMBER(), RANK(), and DENSE_RANK(). Answer β–Ό
Model Answer: ROW_NUMBER() assigns unique sequential integers. RANK() assigns identical ranks to ties and skips ranks. DENSE_RANK() assigns identical ranks to ties without skipping rank numbers.
How do you handle NULL and missing values during data cleaning in Python/Pandas? Answer β–Ό
Model Answer: Use .isna().sum() to identify missing values. Impute with mean/median using .fillna() or remove with .dropna(subset=[...]) depending on variance impact.
What is the difference between Star Schema and Snowflake Schema in Data Warehousing? Answer β–Ό
Model Answer: Star Schema has denormalized dimension tables directly connected to the central Fact table. Snowflake Schema normalizes dimension tables into sub-dimensions to minimize redundancy.
How do you calculate MoM (Month-over-Month) growth in SQL? Answer β–Ό
Model Answer: Use LAG(revenue, 1) OVER (ORDER BY month) to fetch the previous month's revenue and compute (revenue - prev_revenue) / prev_revenue * 100.
Why do you want to join Cognizant as a Data Analyst?
Preparation Tip: Highlight Cognizant's market reputation, recent tech innovations, and how your skills in Python directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Preparation Tip: Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
How do you handle strict deadlines or sudden scope changes?
Preparation Tip: Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.

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