HCLTech

Global IT services and consulting company.

4 Rounds ~21 Days Medium
Start Mock Interview

The Interview Loop

Recruiter Screen (30 min)

Standard fit check, behavioral questions, and resume overview.

Technical Loop (3-4 Rounds)

Deep dive into domain knowledge, coding, and system design.

Interview Question Bank

Data Engineer System Design hard

Design a real-time streaming pipeline to process IoT sensor data, detect anomalies, and store the results for dashboarding.

#Streaming #Kafka #Spark Streaming #NoSQL
Data Engineer System Design hard

Design a batch processing system to ingest 5TB of application log data daily, clean it, and make it available for reporting.

#Batch Processing #Data Lake #ETL
Data Engineer System Design hard

How would you design the data model for a data warehouse supporting an e-commerce platform's sales analytics?

#Data Modeling #Star Schema #E-commerce
Data Engineer System Design hard

Design a fault-tolerant data ingestion pipeline using Apache Kafka. How do you ensure exactly-once processing?

#Kafka #Fault Tolerance #Exactly-once Semantics

Difficulty Radar

Based on recent AI-sourced data.

Meet Your Interviewers

The "Standard" Interviewer

Senior Engineer

Focuses on core competencies, system constraints, and clear communication.

Simulate

Unwritten Rules

Think Out Loud

Always explain your thought process before writing code or drawing architecture.

Practice Now