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Impelsys Senior Angular Developer Interview Questions and Answers

Updated 21 Jan 2025

9 Interview questions

A Senior Angular Developer was asked 5mo ago
Q. What is the difference between a shallow copy and a deep copy?
Ans. 

Shallow copy only copies the references of nested objects, while deep copy creates new copies of nested objects.

  • Shallow copy creates a new object but does not create copies of nested objects.

  • Deep copy creates a new object and also creates copies of nested objects.

  • Shallow copy is faster and more memory efficient, but changes to nested objects affect both original and copied objects.

  • Deep copy is slower and consumes ...

A Senior Angular Developer was asked 5mo ago
Q. Explain the features of ES6.
Ans. 

ES6 features are modern JavaScript enhancements that improve code readability and efficiency.

  • Arrow functions for concise syntax: const add = (a, b) => a + b;

  • Let and const for block-scoped variables: let x = 5; const y = 10;

  • Template literals for string interpolation: const name = 'John'; console.log(`Hello, ${name}!`);

  • Destructuring assignment for easily extracting values from arrays or objects: const { firstName...

Senior Angular Developer Interview Questions Asked at Other Companies

asked in Caizin
Q1. What is Dependency Injection in Angular, and how do the @Self, @s ... read more
asked in Capgemini
Q2. How do you use HTTP requests in Angular? Can you provide an examp ... read more
asked in TCS
Q3. Write a program to find prime numbers.
asked in Capgemini
Q4. What is the difference between ng-content and ng-template?
asked in TCS
Q5. What are the different ways to utilize services in Angular?
A Senior Angular Developer was asked 5mo ago
Q. What are the differences between Subject and BehaviorSubject?
Ans. 

Subject vs BehaviourSubject in Angular

  • Subject is a basic observable that emits values to subscribers

  • BehaviourSubject is a type of Subject that stores the latest value and emits it to new subscribers

  • BehaviourSubject requires an initial value when created

A Senior Angular Developer was asked 5mo ago
Q. Explain wildcard routes and their syntax.
Ans. 

Wildcard routes in Angular allow for handling unknown routes and redirecting to a default route.

  • Wildcard route is denoted by '**' in the route configuration.

  • It is typically used at the end of the route configuration to handle unknown routes.

  • Example: { path: '**', redirectTo: '/404' }

A Senior Angular Developer was asked 5mo ago
Q. Explain ForkJoin and parallel execution.
Ans. 

ForkJoin is an operator in Angular that allows for parallel execution of multiple observables.

  • ForkJoin combines the values from multiple observables and emits them as an array when all observables complete.

  • It waits for all observables to complete and then emits the combined result.

  • Example: forkJoin([observable1, observable2]).subscribe(result => console.log(result));

A Senior Angular Developer was asked 5mo ago
Q. How do you handle errors when fetching data from an API call?
Ans. 

Handle errors in fetching API calls by implementing error handling mechanisms.

  • Use try-catch blocks to catch errors during API calls

  • Implement error handling logic in the catch block to handle different types of errors

  • Display user-friendly error messages to inform users about the issue

  • Use HTTP status codes to identify the type of error (e.g. 404 for not found)

  • Implement retry mechanisms for temporary network issues

A Senior Angular Developer was asked 5mo ago
Q. Explain custom pipes and how to use them in HTML.
Ans. 

Custom pipes in Angular are used to transform data in templates.

  • Custom pipes are created using the @Pipe decorator in Angular.

  • To use a custom pipe in HTML, you need to include it in the declarations array of the NgModule.

  • You can pass parameters to custom pipes in HTML using the pipe symbol (|).

  • Example: {{ value | customPipe:param1:param2 }}

Are these interview questions helpful?
A Senior Angular Developer was asked 5mo ago
Q. What is ng-template, ng-content and ng-container
Ans. 

ng-template, ng-content, and ng-container are Angular structural directives used for template rendering and content projection.

  • ng-template is used to define a template that can be rendered conditionally or multiple times.

  • ng-content is used for content projection, allowing the insertion of content from a parent component into a child component.

  • ng-container is a grouping element that doesn't interfere with styles or...

A Senior Angular Developer was asked 5mo ago
Q. Arrow function vs Regular function
Ans. 

Arrow functions are concise and do not bind their own 'this' value, while regular functions have their own 'this' value and can be used as constructors.

  • Arrow functions have a more concise syntax compared to regular functions.

  • Arrow functions do not have their own 'this' value, they inherit it from the parent scope.

  • Regular functions have their own 'this' value, which can be useful for object-oriented programming and...

Impelsys Senior Angular Developer Interview Experiences

1 interview found

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview in Dec 2024.

Round 1 - Technical 

(10 Questions)

  • Q1. Explain about ES6 features
  • Ans. 

    ES6 features are modern JavaScript enhancements that improve code readability and efficiency.

    • Arrow functions for concise syntax: const add = (a, b) => a + b;

    • Let and const for block-scoped variables: let x = 5; const y = 10;

    • Template literals for string interpolation: const name = 'John'; console.log(`Hello, ${name}!`);

    • Destructuring assignment for easily extracting values from arrays or objects: const { firstName, las...

  • Answered by AI
  • Q2. Shallow copy vs deep copy
  • Ans. 

    Shallow copy only copies the references of nested objects, while deep copy creates new copies of nested objects.

    • Shallow copy creates a new object but does not create copies of nested objects.

    • Deep copy creates a new object and also creates copies of nested objects.

    • Shallow copy is faster and more memory efficient, but changes to nested objects affect both original and copied objects.

    • Deep copy is slower and consumes more ...

  • Answered by AI
  • Q3. Arrow function vs Regular function
  • Ans. 

    Arrow functions are concise and do not bind their own 'this' value, while regular functions have their own 'this' value and can be used as constructors.

    • Arrow functions have a more concise syntax compared to regular functions.

    • Arrow functions do not have their own 'this' value, they inherit it from the parent scope.

    • Regular functions have their own 'this' value, which can be useful for object-oriented programming and cons...

  • Answered by AI
  • Q4. Subject vs BehaviourSubject
  • Ans. 

    Subject vs BehaviourSubject in Angular

    • Subject is a basic observable that emits values to subscribers

    • BehaviourSubject is a type of Subject that stores the latest value and emits it to new subscribers

    • BehaviourSubject requires an initial value when created

  • Answered by AI
  • Q5. Angular lifecycle methods
  • Q6. Custom pipes and how to use it in html
  • Ans. 

    Custom pipes in Angular are used to transform data in templates.

    • Custom pipes are created using the @Pipe decorator in Angular.

    • To use a custom pipe in HTML, you need to include it in the declarations array of the NgModule.

    • You can pass parameters to custom pipes in HTML using the pipe symbol (|).

    • Example: {{ value | customPipe:param1:param2 }}

  • Answered by AI
  • Q7. What is ng-template, ng-content and ng-container
  • Ans. 

    ng-template, ng-content, and ng-container are Angular structural directives used for template rendering and content projection.

    • ng-template is used to define a template that can be rendered conditionally or multiple times.

    • ng-content is used for content projection, allowing the insertion of content from a parent component into a child component.

    • ng-container is a grouping element that doesn't interfere with styles or layo...

  • Answered by AI
  • Q8. Explain ForkJoin and parallel execution
  • Ans. 

    ForkJoin is an operator in Angular that allows for parallel execution of multiple observables.

    • ForkJoin combines the values from multiple observables and emits them as an array when all observables complete.

    • It waits for all observables to complete and then emits the combined result.

    • Example: forkJoin([observable1, observable2]).subscribe(result => console.log(result));

  • Answered by AI
  • Q9. Wildcard routes and it's syntax
  • Ans. 

    Wildcard routes in Angular allow for handling unknown routes and redirecting to a default route.

    • Wildcard route is denoted by '**' in the route configuration.

    • It is typically used at the end of the route configuration to handle unknown routes.

    • Example: { path: '**', redirectTo: '/404' }

  • Answered by AI
  • Q10. Handle errors in fetching api call
  • Ans. 

    Handle errors in fetching API calls by implementing error handling mechanisms.

    • Use try-catch blocks to catch errors during API calls

    • Implement error handling logic in the catch block to handle different types of errors

    • Display user-friendly error messages to inform users about the issue

    • Use HTTP status codes to identify the type of error (e.g. 404 for not found)

    • Implement retry mechanisms for temporary network issues

  • Answered by AI
Round 2 - HR 

(2 Questions)

  • Q1. Behavioural questions
  • Q2. Why should we hire you
  • Ans. 

    I have extensive experience in Angular development, strong problem-solving skills, and a proven track record of delivering high-quality projects on time.

    • I have X years of experience working with Angular framework

    • I have successfully completed projects A, B, and C using Angular

    • I am proficient in problem-solving and troubleshooting issues in Angular applications

  • Answered by AI

Top trending discussions

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Interview Tips & Stories
1w (edited)
a team lead
Why are women still asked such personal questions in interview?
I recently went for an interview… and honestly, m still trying to process what just happened. Instead of being asked about my skills, experience, or how I could add value to the company… the questions took a totally unexpected turn. The interviewer started asking things like When are you getting married? Are you engaged? And m sure, if I had said I was married, the next question would’ve been How long have you been married? What does my personal life have to do with the job m applying for? This is where I felt the gender discrimination hit hard. These types of questions are so casually thrown at women during interviews but are they ever asked to men? No one asks male candidates if they’re planning a wedding or how old their kids are. So why is it okay to ask women? Can we please stop normalising this kind of behaviour in interviews? Our careers shouldn’t be judged by our relationship status. Period.
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Ask anonymously on communities.

Interview questions from similar companies

I applied via Approached by Company and was interviewed before Sep 2021. There were 2 interview rounds.

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 - One-on-one 

(2 Questions)

  • Q1. Basic oops concepts C# questions
  • Q2. Project related questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Easy process just your basics should be clear. Be you & explain it properly.

I applied via Naukri.com and was interviewed in May 2021. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Basic Java questions

Interview Preparation Tips

Interview preparation tips for other job seekers - They have asked basic Java questions and MySQL questions

I applied via Recruitment Consulltant and was interviewed before Oct 2021. There were 4 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 - Aptitude Test 

It was technical aptitude test on hackerearth

Round 3 - Technical 

(3 Questions)

  • Q1. Coding questions followed by some puzzles
  • Q2. Was asked about datastructures like dictionary and hash maps working
  • Ans. 

    Dictionaries and hash maps are key-value data structures that provide fast data retrieval and storage using hashing techniques.

    • Dictionaries store data in key-value pairs, e.g., {'name': 'Alice', 'age': 30}.

    • Hash maps use a hash function to compute an index for storing values, ensuring O(1) average time complexity for lookups.

    • Collisions occur when multiple keys hash to the same index; they can be resolved using chaining ...

  • Answered by AI
  • Q3. SQL questions but basic
Round 4 - Technical 

(2 Questions)

  • Q1. This was techno-managerial round heavy on puzzles and some advanced technical questions. Study about API working
  • Q2. Basic python programming is necessary

Interview Preparation Tips

Topics to prepare for Apisero Senior Software Engineer interview:
  • API
  • Python
Interview preparation tips for other job seekers - Try to study some puzzles and read your projects well.

I applied via Monster and was interviewed before Dec 2021. There were 5 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 - Coding Test 

Java, SQL, SDLC agile, db queries, Http response and request codes status

Round 3 - Technical 

(3 Questions)

  • Q1. Questions related to resume, ds we worked on, http status cod eand response, related to rest api
  • Q2. Hash set internal working, how do you fine second largest element in an array without sorting,
  • Ans. 

    Finding second largest element in an array without sorting using hash set.

    • Create a hash set and iterate through the array, adding each element to the set.

    • Initialize two variables to keep track of the largest and second largest elements.

    • Iterate through the set and compare each element to the largest and second largest variables.

    • Return the second largest variable.

  • Answered by AI
  • Q3. Idempotent methods, safe methods in http, rest api working, to find en element from binary array related program
Round 4 - Technical 

(1 Question)

  • Q1. Same as technical 2, more ds related questions and http rest related
Round 5 - HR 

(1 Question)

  • Q1. Salary discussion ask as much as you can, don't hesitate

Interview Preparation Tips

Interview preparation tips for other job seekers - Normal interview questions, http rest api questions are more, related to your resume, why shift to mule?

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Jul 2021. There were 5 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. What is the time complexity of swap array program?
  • Ans. 

    The time complexity of swap array program is O(n).

    • The time complexity is determined by the number of elements in the array.

    • The program swaps the elements of the array one by one, so it takes linear time.

    • The Big O notation for the time complexity is O(n), where n is the number of elements in the array.

    • Examples: swapping two elements in an array takes constant time, but swapping all elements takes linear time.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare from basic to advance

Skills evaluated in this interview

I applied via Referral and was interviewed before Jul 2021. There were 4 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. Basic about Android related to latest practices
  • Q2. Basic for Android components and around Jetpack libs
Round 3 - Coding Test 

2-3 days coding test to develop basic Android app

Round 4 - HR 

(2 Questions)

  • Q1. General HR questions
  • Q2. HR will explain company culture and other perks company proving

Interview Preparation Tips

Topics to prepare for Simform Senior Software Engineer interview:
  • jetpack libs
  • Android basic
  • MVVM
Interview preparation tips for other job seekers - HR team is very kind and available for any help. I highly recommended to work with Simform.

I applied via Naukri.com and was interviewed in May 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Java Basics,Cloud Basics,simple level codes,API related question

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep the basics clear, OOPS DS concepts,REST API Concepts will help

I applied via Company Website and was interviewed in May 2021. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Basic programming questions, SQL, API related questions, basic cloud computing concepts

Interview Preparation Tips

Interview preparation tips for other job seekers - Good Java/Programming knowledge required

I applied via Naukri.com and was interviewed in Jul 2021. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Most of the questions are on tell me about yourself, ur previous projects, rest Api, sql, java

Interview Preparation Tips

Interview preparation tips for other job seekers - Stay calm, prepare basics.

Impelsys Interview FAQs

How many rounds are there in Impelsys Senior Angular Developer interview?
Impelsys interview process usually has 2 rounds. The most common rounds in the Impelsys interview process are Technical and HR.
What are the top questions asked in Impelsys Senior Angular Developer interview?

Some of the top questions asked at the Impelsys Senior Angular Developer interview -

  1. What is ng-template, ng-content and ng-contai...read more
  2. Custom pipes and how to use it in h...read more
  3. Handle errors in fetching api c...read more

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Overall Interview Experience Rating

3/5

based on 1 interview experience

Difficulty level

Moderate 100%

Duration

2-4 weeks 100%
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