HCLTech prep

HCLTech Senior (5–8 years) System design

#76

Design a real-time chat application like Slack or WhatsApp — HCLTech interview

Reported in HCLTech interview loops. Mid-to-senior design spanning WebSockets, message storage, and presence.

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HCLTech Senior (5–8 years) System design

#77

Compare cache-aside, read-through, write-through, and write-back — HCLTech interview

Reported in HCLTech interview loops. Caching patterns for system design and backend performance tuning.

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HCLTech Senior (5–8 years) System design

#78

How does a load balancer work and which algorithms would you choose? — HCLTech interview

Reported in HCLTech interview loops. Infrastructure design question covering L4/L7 balancers and health checks.

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HCLTech Mid-level (3–5 years) Behavioral

#79

Tell me about a time you disagreed with a teammate. How did you handle it? — HCLTech interview

Reported in HCLTech interview loops. Behavioral STAR question assessing collaboration and conflict resolution.

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HCLTech Lead / Staff (8+ years) Behavioral

#80

Describe a time you led a project or initiative without formal authority — HCLTech interview

Reported in HCLTech interview loops. Leadership behavioral question for senior and lead engineering tracks.

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HCLTech Lead / Staff (8+ years) Manager / leadership

#81

How do you mentor junior engineers on your team? — HCLTech interview

Reported in HCLTech interview loops. Managerial and lead-round question on coaching, feedback, and growth.

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HCLTech Junior (1–3 years) HR / screening

#82

What are your salary expectations? — HCLTech interview

Reported in HCLTech interview loops. HR negotiation question requiring research and flexible framing.

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HCLTech Mid-level (3–5 years) Technical deep dive

#83

What principles do you follow when designing RESTful APIs? — HCLTech interview

Reported in HCLTech interview loops. API design question covering resources, HTTP semantics, and versioning.

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HCLTech Mid-level (3–5 years) Technical deep dive

#84

When would you choose microservices over a monolith? — HCLTech interview

Reported in HCLTech interview loops. Architecture trade-off question for mid-level backend and platform roles.

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HCLTech Mid-level (3–5 years) Technical deep dive

#85

Explain CI/CD and what a typical pipeline includes — HCLTech interview

Reported in HCLTech interview loops. DevOps fundamentals for mid-level engineers discussing automation and quality gates.

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HCLTech Mid-level (3–5 years) Technical deep dive

#86

What is the difference between unit and integration tests? — HCLTech interview

Reported in HCLTech interview loops. Testing strategy question covering pyramid, mocks, and confidence vs speed.

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HCLTech Mid-level (3–5 years) Technical deep dive

#87

How does HashMap work internally in Java? — HCLTech interview

Reported in HCLTech interview loops. Java-specific collections question on buckets, hashing, and resize behavior.

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HCLTech Mid-level (3–5 years) Technical deep dive

#88

Explain the JavaScript event loop, call stack, and task queues — HCLTech interview

Reported in HCLTech interview loops. Core JavaScript concurrency model question for frontend and Node.js roles.

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HCLTech Mid-level (3–5 years) Technical deep dive

#89

What is the Python GIL and how does it affect concurrency? — HCLTech interview

Reported in HCLTech interview loops. Python-specific question on threading limits and multiprocessing alternatives.

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HCLTech Mid-level (3–5 years) Technical deep dive

#90

When would you use useState versus useReducer in React? — HCLTech interview

Reported in HCLTech interview loops. React hooks question on local state complexity and predictable updates.

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