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Deal4U Corp Backend Developer Interview Questions and Answers

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Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I was interviewed in Dec 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. Why did you choose the flask over the django and fastapi?
  • Ans. 

    I chose Flask over Django and FastAPI due to its simplicity, flexibility, and ease of use for smaller projects.

    • Flask is lightweight and minimalistic, making it easier to set up and use for smaller projects.

    • Flask allows for more flexibility in terms of project structure and customization compared to Django.

    • Flask is well-suited for rapid prototyping and smaller applications where simplicity is key.

    • Django, on the other ha...

  • Answered by AI
  • Q2. Write the code for flask request and response block?
  • Ans. 

    Flask request and response block code snippet

    • Use Flask's request object to access incoming request data

    • Use Flask's jsonify function to create a JSON response

    • Handle different HTTP methods like GET, POST, etc. in the route function

  • Answered by AI
Round 2 - Technical 

(2 Questions)

  • Q1. What is ORM? which ORM tool, have you used?
  • Ans. 

    ORM stands for Object-Relational Mapping, a programming technique for converting data between incompatible type systems in object-oriented programming languages.

    • ORM is used to map objects from an application to tables in a relational database.

    • It simplifies data manipulation by allowing developers to work with objects instead of SQL queries.

    • Popular ORM tools include Hibernate for Java, Entity Framework for .NET, and Seq

  • Answered by AI
  • Q2. Write ORM code for select item from table?
  • Ans. 

    Use ORM code to select item from a table in database.

    • Use ORM query methods like find(), findOne(), or where() to select items from a table.

    • Specify the table name and any conditions for the selection.

    • Example: User.find({ where: { id: 1 } }) will select a user with id 1 from the User table.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Just conduct the interviews
Interview experience
4
Good
Difficulty level
Easy
Process Duration
-
Result
Selected Selected
Round 1 - Coding Test 

I was asked a problem around Edit distance and how to compute a average for a stream of data.

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Nodejs promises async await difference
  • Ans. 

    Node.js promises are a way to handle asynchronous operations, while async/await is a syntax for writing asynchronous code in a synchronous manner.

    • Promises are objects that represent the eventual completion (or failure) of an asynchronous operation.

    • Async/await is a syntactic sugar built on top of promises, making asynchronous code look more like synchronous code.

    • Async functions return a promise, which allows you to use ...

  • Answered by AI
  • Q2. Nodejs architecture eventloop

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Introduce yourself
  • Ans. 

    I am a passionate Backend Developer with 5 years of experience in building scalable and efficient web applications.

    • 5 years of experience in backend development

    • Proficient in programming languages like Java, Python, and Node.js

    • Strong understanding of database management systems such as MySQL and MongoDB

    • Experience in developing RESTful APIs and microservices

    • Familiar with cloud technologies like AWS and Azure

  • Answered by AI
  • Q2. Some python programs
Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. React questions
  • Q2. Nodejs questions

Interview Preparation Tips

Interview preparation tips for other job seekers - coding is must
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I was interviewed in Jul 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. Find pairs from list whose is equals to target
  • Ans. 

    Find pairs from list whose sum is equal to target

    • Iterate through the list and for each element, check if the target minus the element exists in a hashmap

    • If it exists, add the pair to the result list

    • If it doesn't exist, add the current element to the hashmap

  • Answered by AI
  • Q2. Multiple iNheritance

Skills evaluated in this interview

Backend Developer Interview Questions & Answers

Wipro user image Morukurthi Appalaraju

posted on 2 Apr 2024

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. They asked Oops concepts
  • Q2. They asked exception handling
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed in Mar 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Aptitude Test based on general

Round 2 - Coding Test 

Coding Test Based on backend technologies

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for backend
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Moderate to difficult

Round 2 - Technical 

(1 Question)

  • Q1. DSA questions based on Dynamic programming
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Collection Related Topics, Internal working of Hashmap, problem solving questions related to java 8 and ds.

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