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Interview Preparation Blog
Expert guides for Data Analyst, Data Engineer, Data Scientist, Product Manager, Banking (IBPS/SBI), SSC and Railway interviews. New posts every week.
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Each category has its own posts, linked within that domain. Click a category to see all posts.
Data Analyst
SQL, Python, Pandas, case studies and real interview questions for data analyst roles.
5 posts published
Data Engineer
SQL optimisation, PySpark, Airflow, dbt, cloud pipelines and system design.
Coming soon
Data Scientist
Machine learning, statistics, A/B testing, Python ML and model evaluation.
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Product Manager
Product sense, metrics, roadmap prioritisation and PM interview frameworks.
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Banking (IBPS/SBI)
IBPS PO, SBI PO, RRB Officer GD/PI preparation and banking awareness.
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SSC Exams
SSC CGL, CHSL interview, Tier 4 document verification and preparation.
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RRB Railway
RRB NTPC, Group D, JE interview and document verification preparation.
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MBA GD/PI
CAT, XAT, NMAT, SNAP GD/PI preparation for IIM, XLRI and top MBA colleges.
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Recent Posts
5 posts total
📊 Data Analyst
SQL vs Python for Data Analysts — Which to Learn First in 2026?
The definitive answer: SQL first, always. Here’s the exact reasoning and the 12-week learning order that gets you hired.
📊 Data Analyst
What Does a Data Analyst Actually Do? Day-in-the-Life 2026
Real tasks, tools, stakeholder meetings and the actual day-to-day reality of a data analyst at Swiggy, Flipkart and top Indian startups.
📊 Data Analyst
Pandas for Data Analysts — Top 20 Functions You Must Know (2026)
groupby, merge, pivot_table, apply, data cleaning — the exact Pandas functions tested in 85% of Python data analyst interviews.
📊 Data Analyst
Data Analyst Salary in India 2026 — City-Wise, Company-Wise Breakdown
Bengaluru vs Hyderabad, product company vs IT services, and the exact skills that command the highest pay in 2026.
📊 Data Analyst
SQL Window Functions Explained — RANK, LAG, LEAD with Real Examples
The most tested advanced SQL topic in 2026 interviews — master RANK, DENSE_RANK, ROW_NUMBER, LAG, LEAD and running totals with real code.
