HCLTech Technical Lead Interview Questions, Process, and Tips

Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types or classes.

• Examples include method overloading and method overriding in object-oriented programming.
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Q2. What is method overriding
Ans. 
Method overriding is a feature in object-oriented programming where a subclass provides a specific implementation of a method that is already provided by its parent class.
• Occurs in inheritance when a subclass provides a specific implementation of a method that is already provided by its parent class

• The method in the subclass must have the same name, return type, and parameters as the method in the parent class

• Allows fo...read more
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Q1. What is interceptor
Ans. 
An interceptor is a design pattern commonly used in software development to capture and manipulate incoming and outgoing requests.
• Interceptors can be used for logging, authentication, authorization, error handling, and more

• In Angular, interceptors can be used to modify HTTP requests before they are sent to the server

• In Spring framework, interceptors can be used to intercept client requests and server responses
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Q2. What is filter in spring
Ans. 
A filter in Spring is a component that intercepts incoming requests and outgoing responses, allowing for pre-processing and post-processing.
• Filters are used for tasks such as logging, authentication, authorization, and more

• Filters can be configured in the Spring application context

• Examples of filters in Spring include CharacterEncodingFilter, HiddenHttpMethodFilter, and CorsFilter
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Q1. What is your contribution
Ans. 
My contribution as a Technical Lead includes leading a team, providing technical guidance, resolving technical issues, and ensuring project success.
• Leading a team to achieve project goals

• Providing technical guidance and mentorship to team members

• Resolving technical issues and challenges

• Ensuring project success through effective planning and execution
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Q2. What have you done in your project
Ans. 
I have led a team in developing a new feature for our product, involving designing, coding, testing, and deployment.
• Led a team in developing a new feature

• Designed the architecture for the feature

• Coded the functionality using Java and Spring Boot

• Tested the feature using JUnit and Mockito

• Deployed the feature to production environment
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Q1. How soon can you join
Ans. 
I can join within 2 weeks.
• I can start within 2 weeks of receiving an offer.

• I need to give notice to my current employer.

• I may need time to relocate if necessary.
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Q2. How was your last interview
Ans. 
My last interview went well, I was able to showcase my technical skills and experience effectively.
• Prepared thoroughly by reviewing common technical interview questions

• Highlighted my experience leading technical teams and projects

• Demonstrated problem-solving skills with real-life examples

• Received positive feedback on my communication and teamwork abilities
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Q1. Offer letter related
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Q2. Relocation related
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Q1. Ticket booking and travel date related
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Q2. Confirmation on travel
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Q1. Are you ready to travel?
Ans. 
Yes, I am ready to travel for work as needed.
• I am willing to travel for client meetings, conferences, and team collaborations.

• I have previous experience traveling for work in my current or past roles.

• I understand the importance of face-to-face interactions in a technical lead role.
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Q2. Have you talked to your reporting manager
Ans. 
Yes, I regularly communicate with my reporting manager to provide updates and discuss any issues or concerns.
• Regularly scheduled check-ins with reporting manager

• Provide updates on project progress

• Discuss any issues or concerns

• Seek guidance and feedback from reporting manager
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Q1. How do microservices communicate?
Ans. 
Microservices communicate through lightweight protocols like HTTP, messaging queues, and RPC.
• HTTP: RESTful APIs are commonly used for communication between microservices.

• Messaging queues: Services can communicate asynchronously through message brokers like RabbitMQ or Kafka.

• RPC (Remote Procedure Call): Services can make direct calls to each other using protocols like gRPC.
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Q2. What is the internal working of a HashMap?
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• To retrieve a value, the key is hashed a...read more
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Q1. Covered all html css js and React topics
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Covered all html css js and React topics with real time scenarios and what we will do in given situations

Q1. Core java elated questions and programs
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Q1. Questions related to tech mentioned in cv
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Q1. Salary discussion
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