Top 50
Prep plan
Updated weekly · Last refresh Aug 30
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HCL Tech Software Engineer Interview Questions

The questions to prepare for a HCL Tech Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~8htotal time
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1
CodingStart here. 11 questions · ~101 min
Detect Cycle in Linked ListEasy
Practice

Use Floyd’s two-pointer algorithm to determine whether a singly linked list contains a cycle.

Hash TablesLinked ListsTwo PointersHHCL Tech
Find Second Largest ElementEasy
Practice

Scan an array once to return the second-largest distinct value, handling duplicates and invalid cases efficiently.

Basic Algorithmsfunction implementationArraysHHCL Tech
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2
System Design10 questions · ~91 min
Cloud-Native Security and Load BalancingHard
Recently asked

Evaluates your system design approach to security controls and traffic distribution.

cloud architectureSecurityload balancingHHCL Tech
Scalable High-Traffic Service DesignHard
Recently asked

Evaluates your system design skills for scalability, reliability, and performance under load.

system architectureHHCL Tech
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3
Execution4 questions · ~37 min
Improving Legacy Code PerformanceHard
Recently asked

Assesses your ability to modernize and optimize legacy systems without breaking functionality.

technical debtHHCL Tech
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4
SQL & Data Manipulation10 questions + 3 drills · ~121 min
5
Security & Infrastructure10 questions · ~91 min
C and Operating System FundamentalsMedium

Assesses your understanding of low-level programming and OS concepts.

Operating SystemsHHCL Tech
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6
Behavioral & Leadership3 questions · ~27 min
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7
More topics2 questions · ~18 min
State File ManagementMedium

Assesses understanding of infrastructure-as-code state handling and operational safety.

state managementHHCL Tech
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.