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Senior Software Engineer Interview Questions & Answers

Anonymous

posted on 26 Jul 2023

Interview experience

Average

Difficulty level

Moderate

Process Duration

Less than 2 weeks

Result

Not Selected

I applied via Naukri.com and was interviewed in Jun 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist

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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.

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Round 2 - Technical

(2 Questions)

Q1. Explain Java 8 features

Ans.

Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.

Lambda expressions allow you to write code in a more concise and readable way.
Functional interfaces are interfaces with a single abstract method, which can be implemented using lambda expressions.
Streams provide a way to work with collections of objects in a functional style.
Default methods allow int...

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Q2. Find 2nd Highest number from an array

Ans.

Find 2nd highest number from an array of strings

Convert array of strings to array of integers
Sort the array in descending order
Return the second element in the sorted array

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Round 3 - One-on-one

(5 Questions)

Q1. Explain Microservice design pattern

Ans.

Microservice design pattern is an architectural style where an application is composed of small, independent services that communicate over well-defined APIs.

Each service is responsible for a specific business function
Services are loosely coupled and can be developed, deployed, and scaled independently
Communication between services is typically done through lightweight protocols like HTTP or messaging queues
Microservic...

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Q2. List all the Annotation used in your project Explain difference between @component and @bean

Ans.

Annotations used in project: @Component, @Bean. Difference: @Component is a generic stereotype for any Spring-managed component, while @Bean is used to explicitly declare a Spring bean.

Annotations used in project: @Component, @Bean
@Component is a generic stereotype for any Spring-managed component
@Bean is used to explicitly declare a Spring bean

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Q3. Explain SOLID design principle

Ans.

SOLID is a set of five design principles to make software designs more understandable, flexible, and maintainable.

S - Single Responsibility Principle: A class should have only one reason to change.
O - Open/Closed Principle: Software entities should be open for extension but closed for modification.
L - Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of its subclasses without aff...

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Q4. Explain internal working of has map

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...

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Q5. Explain angular hooks

Ans.

Angular hooks are lifecycle events in Angular components that allow developers to tap into key moments in a component's lifecycle.

Angular hooks include ngOnInit, ngOnChanges, ngDoCheck, ngOnDestroy, etc.
ngOnInit is used for initialization logic, ngOnChanges is used for reacting to input changes, ngDoCheck is used for custom change detection, and ngOnDestroy is used for cleanup tasks.
Developers can use these hooks to pe...

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Interview Preparation Tips

Interview preparation tips for other job seekers - focus more on these topics
Oops
java 8
Arrays questions
collections
Threads
microservice
springboot

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Senior Software Engineer Interview Questions asked at other Companies

Q1. Tell me about yourself. What technology are you using? What is a Collection? What are the different types of collection there? What is the difference between ArrayList and LinkedList What are the basic building blocks of Stream operators, s... read more

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Fullstack Java Application Developer Interview Questions & Answers

Anonymous

posted on 26 Feb 2025

Interview experience

Good

Difficulty level

Moderate

Process Duration

Less than 2 weeks

Result

Selected

I was interviewed in Jan 2025.

Round 1 - Technical

(3 Questions)

Q1. Find duplicate element frequency in an array.

Ans.

Find duplicate element frequency in an array of strings.

Create a HashMap to store each element and its frequency.
Iterate through the array and update the frequency in the HashMap.
Print out elements with frequency greater than 1.

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Q2. Stream API examples

Ans.

Stream API in Java provides a way to process collections of objects in a functional style.

Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.
Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); Stream<String> stream = names.stream();
Example: List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5); int sum = numbers.

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Q3. Dependency Injection in Spring

Ans.

Dependency Injection in Spring is a design pattern where objects are provided with their dependencies rather than creating them.

In Spring, Dependency Injection is achieved through either constructor injection or setter injection.
It helps in achieving loose coupling between classes and makes the code more maintainable and testable.
Example: @Autowired annotation in Spring is used for dependency injection.

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Round 2 - Technical