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HCLTech Lead Engineer Interview Questions, Process, and Tips

Updated 20 Feb 2025

Top HCLTech Lead Engineer Interview Questions and Answers

  • Q1. Which BGP path attributes are used to manipulate the ingress traffic and how traffic is transit from one AS to another AS via 3rd AS?
  • Q2. What is VTep? Explain the VLan data encapsulated with VXLAN header and fields used in it?
  • Q3. What is VSL in Vss, explain the mechanism and role in VSS?
View all 92 questions

HCLTech Lead Engineer Interview Experiences

158 interviews found

Lead Engineer Interview Questions & Answers

user image Gowthami N

posted on 29 Apr 2024

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Apr 2023. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Storage concepts basics
Round 2 - Technical 

(1 Question)

  • Q1. Server and storage testing
Round 3 - HR 

(1 Question)

  • Q1. Managerial roind

Lead Engineer Interview Questions & Answers

user image Anonymous

posted on 31 Jan 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
More than 8 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Jan 2023. There was 1 interview round.

Round 1 - Technical 

(5 Questions)

  • Q1. What is storage classes In c ?
  • Ans. 

    Storage classes in C define the scope and lifetime of variables.

    • There are four storage classes in C: auto, register, static, and extern.

    • Auto storage class is the default storage class for all local variables.

    • Register storage class is used to define local variables that should be stored in a register for faster access.

    • Static storage class is used to define local variables that retain their value between function calls.

    • E...

  • Answered by AI
  • Q2. Write a program for string reverse?
  • Ans. 

    Program to reverse an array of strings

    • Iterate through each string in the array and reverse it using built-in functions or by swapping characters

    • Use a temporary variable to store the reversed string before updating the original string

    • Ensure to handle edge cases like empty strings or null values

  • Answered by AI
  • Q3. What is malloc pointer?
  • Ans. 

    malloc pointer is a function in C programming used to dynamically allocate memory.

    • malloc pointer is used to allocate memory during runtime in C programming.

    • It returns a pointer to the allocated memory.

    • Example: int *ptr = (int*)malloc(10 * sizeof(int));

  • Answered by AI
  • Q4. What is ACL protocol?
  • Ans. 

    ACL protocol stands for Access Control List protocol, used to control access to network resources by defining rules for allowing or denying traffic.

    • ACL protocol is commonly used in networking to restrict access to certain resources based on defined rules.

    • ACLs can be configured on routers, switches, and firewalls to control traffic flow.

    • ACLs can be configured based on source/destination IP addresses, ports, protocols, e...

  • Answered by AI
  • Q5. Write a program for 1st lowest and 2nd lowest program in arrays
  • Ans. 

    Program to find 1st and 2nd lowest numbers in an array of strings

    • Convert array of strings to array of integers

    • Sort the array in ascending order

    • Return the first and second elements of the sorted array

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Very good company, environment and work culture is superb but some managers showing partiality on telugu persons

Skills evaluated in this interview

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Lead Engineer Interview Questions & Answers

user image Anonymous

posted on 27 Mar 2023

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
6-8 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Mar 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. AGILE Methodology and principles
  • Ans. 

    AGILE is a project management methodology that emphasizes on iterative development and customer collaboration.

    • AGILE focuses on delivering working software frequently

    • It values customer collaboration over contract negotiation

    • AGILE teams are self-organizing and cross-functional

    • It emphasizes on responding to change over following a plan

    • AGILE principles are outlined in the Agile Manifesto

  • Answered by AI
  • Q2. Difference between verification and validation
  • Ans. 

    Verification ensures that the product is built according to the requirements, while validation ensures that the product meets the customer's needs.

    • Verification checks if the product is built correctly, while validation checks if the right product is built.

    • Verification is a process of evaluating the intermediate work products, while validation is a process of evaluating the final product.

    • Verification is done by develope...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident and Read your resume before interview

Skills evaluated in this interview

Lead Engineer Interview Questions & Answers

user image Anonymous

posted on 20 Mar 2024

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Mar 2023. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Python Basics including data types and mostly oops
Round 2 - One-on-one 

(1 Question)

  • Q1. API integration and microservice architecture

HCLTech interview questions for designations

 Lead Mechanical Engineer

 (3)

 Lead Design Engineer

 (2)

  Lead Electrical Engineer

 (1)

 Technical Lead Engineer

 (1)

 Lead Software Engineer

 (3)

 R&D Engineer

 (1)

 Technical Lead

 (188)

 Test Lead

 (18)

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Feb 2023. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. C#, Ajax, .NetCore and Angular Questions
Round 2 - Technical 

(1 Question)

  • Q1. Again same C#, OOPs concept, Dot Net Core and Angular Questions with more difficulty.
Round 3 - HR 

(1 Question)

  • Q1. Normal discussion.

Get interview-ready with Top HCLTech Interview Questions

Lead Engineer Interview Questions & Answers

user image Anonymous

posted on 17 Mar 2022

I applied via Recruitment Consulltant and was interviewed in Feb 2022. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. 1. Formally introduce about yourself 2. In your current organization what is your roles are responsibilities 3. Difference between SDLC and STLC 4. What is API testing 5. What are the responses in API tes...
Round 2 - Technical 

(1 Question)

  • Q1. 1. He asked me about my resume formate 2. They asked me all questions from my resume 3. They also asked me about. are you preparing for UPSC or any other government exam?
  • Ans. My resume was not good formate so, please make a good resume and add blocks for education and technical skills
  • Answered Anonymously
Round 3 - One-on-one 

(1 Question)

  • Q1. 1. What are roles are responsibilities in your current company 2. Why do you want to join HCL

Interview Preparation Tips

Interview preparation tips for other job seekers - Attend the interview on the formal dress and make sure the video is on
Make sure you are in a closed room there is no disturbance
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. What is DI in .Net Core
  • Ans. 

    DI stands for Dependency Injection in .Net Core.

    • DI is a design pattern used to achieve loose coupling between objects.

    • It allows for easier testing and maintenance of code.

    • In .Net Core, DI is implemented through the built-in service container.

    • Services can be registered and injected into classes using constructor injection.

    • Example: services.AddScoped();

    • Example: public MyClass(IMyService myService)

  • Answered by AI
  • Q2. Need for Design patterns
  • Ans. 

    Design patterns provide reusable solutions to common software design problems.

    • Design patterns help improve code readability and maintainability.

    • They provide a common language for developers to communicate and collaborate.

    • Examples include Singleton, Factory, and Observer patterns.

    • Design patterns can also improve performance and scalability.

    • They are especially useful in large and complex software systems.

  • Answered by AI
Round 3 - Technical 

(3 Questions)

  • Q1. SQL query,indexer, composite key
  • Q2. Difference between procedure and functions
  • Ans. 

    Procedures and functions are both subroutines, but functions return a value while procedures do not.

    • Functions return a value while procedures do not

    • Functions can be used in expressions while procedures cannot

    • Functions can have parameters passed by value or reference while procedures can only have parameters passed by reference

    • Examples of functions include mathematical operations like addition and subtraction, while exa...

  • Answered by AI
  • Q3. Why need for check constrain
  • Ans. 

    Check constraints ensure data integrity by limiting the values that can be inserted into a database table.

    • Check constraints are used to enforce business rules or data validation rules.

    • They prevent invalid data from being inserted into a table.

    • For example, a check constraint can ensure that a date column only contains dates in the future.

    • Check constraints can also be used to limit the range of values that can be inserte...

  • Answered by AI
Round 4 - HR 

(3 Questions)

  • Q1. Why should we hire you?
  • Q2. Why are you looking for a change?
  • Q3. What are your strengths and weaknesses?
Round 5 - Group Discussion 
Pro Tip by AmbitionBox:
Don’t treat group discussions as an argument. Group discussion is about reaching a meaningful conclusion.
View all tips

Interview Preparation Tips

Interview preparation tips for other job seekers - Preparation all things

Skills evaluated in this interview

Interview Questionnaire 

13 Questions

  • Q1. What is VDC? relationship between Supervisor and VDC?
  • Ans. 

    VDC stands for Virtual Design and Construction. Supervisor oversees VDC process.

    • VDC is a process of creating a digital model of a construction project before it is built.

    • It helps in identifying and resolving potential issues before construction begins.

    • Supervisor oversees the VDC process to ensure that the digital model is accurate and meets the project requirements.

    • VDC can also help in improving communication and colla...

  • Answered by AI
  • Q2. What is VSL in Vss, explain the mechanism and role in VSS?
  • Ans. 

    VSL is the voltage at which the substrate current becomes zero in VSS.

    • VSL is the voltage at which the substrate current becomes zero in VSS.

    • It is the minimum voltage required to maintain a zero substrate current.

    • VSL is important in VSS as it helps in reducing the leakage current.

    • It is achieved by applying a negative voltage to the substrate.

    • VSL is typically set to -0.5V or -1.0V in modern CMOS processes.

  • Answered by AI
  • Q3. What is MLAG? Difference between LACP & PAGP?
  • Ans. 

    MLAG is a protocol used for creating a loop-free network topology. LACP and PAGP are link aggregation protocols.

    • MLAG stands for Multi-Chassis Link Aggregation Group.

    • It allows multiple switches to appear as a single logical switch to the connected devices.

    • LACP (Link Aggregation Control Protocol) is an IEEE standard protocol used for link aggregation.

    • PAGP (Port Aggregation Protocol) is a Cisco proprietary protocol used f...

  • Answered by AI
  • Q4. Which BGP path attributes are used to manipulate the ingress traffic and how traffic is transit from one AS to another AS via 3rd AS?
  • Ans. 

    BGP path attributes used to manipulate ingress traffic and transit via 3rd AS.

    • AS Path attribute is used to manipulate ingress traffic by adding or removing AS numbers.

    • Local Preference attribute is used to influence the path selection within the same AS.

    • MED (Multi-Exit Discriminator) attribute is used to influence the path selection between different ASes.

    • Communities attribute is used to tag routes and influence the pat...

  • Answered by AI
  • Q5. What os BGP community? What ips role of BGP communities?
  • Ans. 

    BGP community is a way to tag routes with additional information. It helps in controlling the flow of traffic.

    • BGP community is a 32-bit number that can be attached to a route advertisement.

    • It is used to tag routes with additional information.

    • It helps in controlling the flow of traffic by allowing network administrators to manipulate the way BGP routes are propagated and selected.

    • BGP communities can be used to implement...

  • Answered by AI
  • Q6. What is VTep? Explain the VLan data encapsulated with VXLAN header and fields used in it?
  • Ans. 

    VTep is a virtual tunnel endpoint used in VXLAN to extend Layer 2 networks over Layer 3 networks.

    • VTep is a software-based endpoint that terminates VXLAN tunnels.

    • It is used to extend Layer 2 networks over Layer 3 networks.

    • VXLAN header encapsulates the original Ethernet frame and adds a 24-bit VXLAN Network Identifier (VNI) to identify the virtual network.

    • The VLAN data is encapsulated with VXLAN header and fields like VN

  • Answered by AI
  • Q7. Leaf and spine architecture in Cisco ACI?
  • Ans. 

    Leaf and spine architecture is a network topology used in Cisco ACI for scalable and efficient data center networking.

    • Leaf switches connect to spine switches, which then connect to the core network.

    • Leaf switches handle traffic within their own pod, while spine switches handle traffic between pods.

    • ACI uses a 2-tier spine-leaf architecture for scalability and flexibility.

    • The spine switches act as the routing backbone, wh...

  • Answered by AI
  • Q8. Nexus 9K hardware models used in Leaf and spine architecture?
  • Ans. 

    Nexus 9K hardware models used in Leaf and spine architecture.

    • Nexus 9372PX and 9372TX used as leaf switches

    • Nexus 9504, 9508, and 9516 used as spine switches

    • Nexus 93108TC-EX and 93180YC-EX also used as leaf switches

    • All models support VXLAN and ACI

    • Highly scalable and flexible architecture

  • Answered by AI
  • Q9. What is L3 fabric? What is COOP?
  • Ans. 

    L3 fabric is a network architecture that provides high-speed and low-latency connectivity between devices. COOP is a protocol used for failover and redundancy in networking.

    • L3 fabric is a type of network architecture that uses Layer 3 routing to provide high-speed and low-latency connectivity between devices.

    • It is designed to be scalable and flexible, allowing for easy expansion and modification of the network.

    • COOP (Cl...

  • Answered by AI
  • Q10. Define EPG ? Why contract ios used for EPG communication?
  • Ans. 

    EPG is Electronic Program Guide used for TV listings. Contract iOS is used for EPG communication due to its reliability and security.

    • EPG is a digital guide that provides information about TV programs and schedules.

    • Contract iOS is a secure and reliable way to communicate EPG data between devices.

    • EPG data can be accessed through set-top boxes, smart TVs, and mobile apps.

    • EPG data includes program titles, descriptions, sta

  • Answered by AI
  • Q11. Otv mechanism?
  • Ans. 

    OTV mechanism refers to Orbital Transfer Vehicle mechanism used for transferring payloads from one orbit to another.

    • OTV mechanism is used for transferring payloads from one orbit to another

    • It is commonly used in space missions to transfer payloads between different orbits

    • OTV mechanism can be used to transfer payloads from low Earth orbit to geostationary orbit

    • It is also used for transferring payloads from one planet to

  • Answered by AI
  • Q12. Administrative distances value of IGPs?
  • Ans. 

    Administrative distances are values used by IGPs to determine the best path for routing.

    • Administrative distances are used to determine the trustworthiness of routing information received from different sources.

    • Lower administrative distances are preferred over higher ones.

    • Examples of IGPs and their default administrative distances include OSPF (110), IS-IS (115), and RIP (120).

  • Answered by AI
  • Q13. Which route will be priority ospf or ebgp? If we wish ospf as best route how can this achieved?
  • Ans. 

    OSPF should be priority over eBGP. Achieve this by manipulating administrative distance or metric.

    • OSPF should be preferred over eBGP as it is an interior gateway protocol while eBGP is an exterior gateway protocol

    • Manipulate administrative distance to make OSPF preferred over eBGP

    • Manipulate metric to make OSPF preferred over eBGP

    • Use route maps to manipulate the preference of OSPF over eBGP

    • Example: set the administrative...

  • Answered by AI

Skills evaluated in this interview

I applied via Walk-in and was interviewed in Feb 2022. There were 3 interview rounds.

Round 1 - One-on-one 

(1 Question)

  • Q1. Self introduction and intro our self
Round 2 - Technical 

(1 Question)

  • Q1. Based on your experience
Round 3 - HR 

(1 Question)

  • Q1. Salary and joining discussion

Interview Preparation Tips

Interview preparation tips for other job seekers - Key skills very important and based on our experience. Hcl asking for questions.

I applied via Naukri.com and was interviewed in Jan 2022. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Properly align and format text in your resume. A recruiter will have to spend more time reading poorly aligned text, leading to high chances of rejection.
View all tips
Round 2 - Coding Test 

Coding test is simple with lots of string, array, searching and sorting programs

Round 3 - Technical 

(2 Questions)

  • Q1. Basic Java,kotlin questions
  • Q2. Android project details Basic Android questions MVVM architecture
Round 4 - Technical 

(1 Question)

  • Q1. Problem solving methodology questions
Round 5 - HR 

(4 Questions)

  • Q1. What are your salary expectations?
  • Q2. Share details of your previous job.
  • Q3. Why should we hire you?
  • Q4. Tell me about yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be prepared with basics. Be firm with your answers.Be confident.

HCLTech Interview FAQs

How many rounds are there in HCLTech Lead Engineer interview?
HCLTech interview process usually has 2-3 rounds. The most common rounds in the HCLTech interview process are Technical, HR and Resume Shortlist.
How to prepare for HCLTech Lead Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at HCLTech. The most common topics and skills that interviewers at HCLTech expect are Embedded C, Medical Devices, New Product Development, C++ and Cloud.
What are the top questions asked in HCLTech Lead Engineer interview?

Some of the top questions asked at the HCLTech Lead Engineer interview -

  1. Which BGP path attributes are used to manipulate the ingress traffic and how tr...read more
  2. What is VTep? Explain the VLan data encapsulated with VXLAN header and fields u...read more
  3. What is VSL in Vss, explain the mechanism and role in VS...read more
How long is the HCLTech Lead Engineer interview process?

The duration of HCLTech Lead Engineer interview process can vary, but typically it takes about less than 2 weeks to complete.

Tell us how to improve this page.

HCLTech Lead Engineer Interview Process

based on 112 interviews

5 Interview rounds

  • Technical Round - 1
  • Technical Round - 2
  • HR Round - 1
  • HR Round - 2
  • Personal Interview1 Round
View more
Join HCLTech Find your spark and discover what drives you forward
HCLTech Lead Engineer Salary
based on 14.9k salaries
₹4.2 L/yr - ₹14 L/yr
46% less than the average Lead Engineer Salary in India
View more details

HCLTech Lead Engineer Reviews and Ratings

based on 1.6k reviews

3.5/5

Rating in categories

3.3

Skill development

3.7

Work-life balance

2.8

Salary

3.8

Job security

3.4

Company culture

2.5

Promotions

3.2

Work satisfaction

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