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Wissen Technology Interview Questions, Process, and Tips

Updated 2 Mar 2025

Top Wissen Technology Interview Questions and Answers

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149 interviews found

Intern Interview Questions & Answers

user image Anonymous

posted on 22 Sep 2024

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

I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Paper pen coding test

Round 2 - Technical 

(4 Questions)

  • Q1. Easy-medium level sliding window problem
  • Ans. 

    Find the maximum sum of a subarray of size k in an array of integers.

    • Use a sliding window approach to keep track of the sum of the current subarray.

    • Slide the window by adding the next element and subtracting the previous element.

    • Keep track of the maximum sum encountered so far.

    • Return the maximum sum found.

  • Answered by AI
  • Q2. Easy-medium level array problem
  • Ans. 

    Find the longest common prefix among an array of strings.

    • Iterate through the characters of the first string and compare with other strings.

    • Stop when a character doesn't match or reach the end of any string.

    • Return the prefix found so far.

  • Answered by AI
  • Q3. Gave me a condition and asked what data structure i would use. Problem was related to data retrieval so we would use hashmaps.
  • Q4. They also asked sql queires and dbms related concepts (ACID, etc)

Skills evaluated in this interview

Intern Interview Questions asked at other Companies

Q1. Case. There is a housing society “The wasteful society”, you collect all the household garbage and sell it to 5 different businesses. Determine what price you will pay to the society members in Rs/kg, given you want to make a profit of 20% ... read more
View answer (8)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Technical 

(5 Questions)

  • Q1. Write a program to merge 2 sorted list with n+m complexity
  • Ans. 

    Merge two sorted lists with n+m complexity

    • Create a new list to store the merged result

    • Iterate through both lists simultaneously and compare elements

    • Add the smaller element to the new list and move to the next element in that list

    • Continue until all elements from both lists are merged

  • Answered by AI
  • Q2. From the employee table find out the employee list whose salary is highest in the department
  • Q3. Singleton design patterns
  • Q4. What is dependency injection
  • Ans. 

    Dependency injection is a design pattern where components are given their dependencies rather than creating them internally.

    • Dependency injection helps in achieving loose coupling between classes.

    • It allows for easier testing by providing a way to mock dependencies.

    • There are three types of dependency injection - constructor injection, setter injection, and interface injection.

  • Answered by AI
  • Q5. N+1 problem of hibernate
  • Ans. 

    The n+1 problem in Hibernate occurs when a query results in multiple individual queries being executed for each row fetched.

    • Occurs when a query fetches a collection and then for each element in the collection, another query is executed to fetch related data

    • Can be resolved by using fetch joins or batch fetching to reduce the number of queries

    • Improves performance by reducing the number of database round trips

  • Answered by AI

Skills evaluated in this interview

Top Wissen Technology Senior Software Engineer Interview Questions and Answers

Q1. Write a javascript function which returns maximum and minimum occurrence of letter from string
View answer (1)

Senior Software Engineer Interview Questions asked at other Companies

Q1. Find Nth PrimeYou are given a number 'N'. Your task is to find Nth prime number. A prime number is a number greater than 1 that is not a product of two smaller natural numbers. Prime numbers have only two factors – 1 and the number itself. ... read more
View answer (6)
Interview experience
1
Bad
Difficulty level
Hard
Process Duration
4-6 weeks
Result
No response

I applied via Referral and was interviewed in Jul 2024. There were 5 interview rounds.

Round 1 - Coding Test 

Five MCQs, 2 moderate-level+1 hard level coding,2 SQL queries.

Round 2 - Assignment 

Hard-level 6 Data structure based questions to write the code.

Round 3 - Technical 

(2 Questions)

  • Q1. Flattenedarray code
  • Q2. Nested array objects to single array.
  • Ans. 

    Convert nested array objects to single array of strings.

    • Iterate through the nested arrays and flatten them into a single array.

    • Use recursion to handle multiple levels of nesting.

    • Example: [["a", "b"], ["c", "d"]] -> ["a", "b", "c", "d"]

  • Answered by AI
Round 4 - One-on-one 

(2 Questions)

  • Q1. Reverse the list node with head node having multiple values.
  • Ans. 

    Reverse a list node with multiple values in Java.

    • Create a new linked list to store the reversed nodes.

    • Traverse the original list and add each node to the front of the new list.

    • Update the head node of the original list to point to the new list.

  • Answered by AI
  • Q2. Hard-level string question to write the code.
Round 5 - Technical 

(2 Questions)

  • Q1. Advanced Java and database
  • Q2. Advanced Data structures

Skills evaluated in this interview

Top Wissen Technology Java Developer Interview Questions and Answers

Q1. Parent class has run() and walk() . Parent run() - calls walk() Child Class overrides Parent class Inside run() - calls super.run() Walk() - calls super.walk In main class Parent p = new child() p.run() What will be the order of execution?
View answer (5)

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 1You have been given an integer array/list(ARR) of size N that contains only integers, 0 and 1. Write a function to sort this array/list. Think of a solution which scans the array/list only once and don't require use of an extra arra... read more
View answer (4)
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed in Oct 2024. There were 2 interview rounds.

Round 1 - Coding Test 

HackerRank assessment

Round 2 - Technical 

(2 Questions)

  • Q1. Java Streams related questions
  • Q2. EASY TO Medium Level of DSA questions

Top Wissen Technology Software Engineer Interview Questions and Answers

Q1. How to use custom object as a key in HashMap?
View answer (1)

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (169)

Wissen Technology interview questions for popular designations

 Java Developer

 (22)

 Software Engineer

 (18)

 Senior Software Engineer

 (17)

 Software Developer

 (17)

 Associate Software Engineer

 (8)

 Data Engineer

 (5)

 Senior Software Developer

 (4)

 Angular Developer

 (2)

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

(1 Question)

  • Q1. Remove duplicates from an array

Top Wissen Technology Java Developer Interview Questions and Answers

Q1. Parent class has run() and walk() . Parent run() - calls walk() Child Class overrides Parent class Inside run() - calls super.run() Walk() - calls super.walk In main class Parent p = new child() p.run() What will be the order of execution?
View answer (5)

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 1You have been given an integer array/list(ARR) of size N that contains only integers, 0 and 1. Write a function to sort this array/list. Think of a solution which scans the array/list only once and don't require use of an extra arra... read more
View answer (4)

Get interview-ready with Top Wissen Technology Interview Questions

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
-
Result
Selected Selected
Round 1 - Coding Test 

1- sql adn 10 spark questions.

Round 2 - Technical 

(2 Questions)

  • Q1. Python programs - 4
  • Q2. Sql questions - 4
Round 3 - Technical 

(1 Question)

  • Q1. Project related and work experience questions
Round 4 - HR 

(1 Question)

  • Q1. Managerial question

Data Engineer Interview Questions asked at other Companies

Q1. Optimal Strategy for a GameYou and your friend Ninjax are playing a game of coins. Ninjax place the 'N' number of coins in a straight line. The rule of the game is as follows: 1. Each coin has a value associated with it. 2. It’s a two-playe... read more
View answer (6)

Jobs at Wissen Technology

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Java Developer Interview Questions & Answers

user image Satya Nikhil Matlakunta

posted on 17 Dec 2024

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

Coding test time limit is 60 minutes it is moderate

Round 2 - One-on-one 

(1 Question)

  • Q1. Find the missing number in an given array

Top Wissen Technology Java Developer Interview Questions and Answers

Q1. Parent class has run() and walk() . Parent run() - calls walk() Child Class overrides Parent class Inside run() - calls super.run() Walk() - calls super.walk In main class Parent p = new child() p.run() What will be the order of execution?
View answer (5)

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more
View answer (3)
Interview experience
1
Bad
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Recruitment Consulltant and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Angular basic, JS basic
  • Q2. Some output questions and DSA problems.

Interview Preparation Tips

Interview preparation tips for other job seekers - Don't bother with this company. They're a complete waste of time. After i passed the first round, they asked me for my salary expectations, even though we'd already discussed it beforehand. Then they try to offered me the same salary as previous CTC.

Angular Frontend Developer Interview Questions asked at other Companies

Q1. How to implement interfaces without methods?
View answer (1)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I was interviewed in Aug 2024.

Round 1 - Technical 

(3 Questions)

  • Q1. Difference between collection and collections
  • Ans. 

    Collection is a single interface in Java while Collections is a utility class containing static methods for operating on collections.

    • Collection is an interface in Java that represents a group of objects known as elements. It is a single entity.

    • Collections is a utility class in Java that contains static methods for operating on collections like sorting, searching, etc.

    • Example: List is a Collection interface while Collec...

  • Answered by AI
  • Q2. Difference between microservies and api
  • Ans. 

    Microservices are a architectural style that structures an application as a collection of loosely coupled services, while APIs are interfaces that allow different software systems to communicate with each other.

    • Microservices are independent, self-contained services that can be developed, deployed, and scaled independently.

    • APIs are interfaces that define how different software components should interact with each other.

    • ...

  • Answered by AI
  • Q3. What is status code 302?
  • Ans. 

    Status code 302 is a temporary redirect response status code indicating that the requested resource has been temporarily moved to a different URL.

    • 302 Found is commonly used in response to a POST/PUT/DELETE request to indicate that the resource has been temporarily moved to a different URL.

    • It is often used during website maintenance or when a webpage has been moved to a new location temporarily.

    • The client should continu...

  • Answered by AI

Skills evaluated in this interview

Senior Software Quality Engineer Interview Questions asked at other Companies

Q1. What is STLC and how you work in different layers of it?
View answer (1)

Analyst Interview Questions & Answers

user image Anonymous

posted on 24 Nov 2024

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

(2 Questions)

  • Q1. Explain maps in Java
  • Ans. 

    Maps in Java are data structures that store key-value pairs and allow for efficient retrieval and manipulation of data.

    • Maps in Java are implemented by classes like HashMap, TreeMap, and LinkedHashMap.

    • They allow you to store unique keys and their corresponding values.

    • You can retrieve values from a map using the key, and also update or remove key-value pairs.

    • Example: HashMap<String, Integer> map = new HashMap<&g...

  • Answered by AI
  • Q2. Concurrency in Java
  • Ans. 

    Concurrency in Java allows multiple tasks to be executed simultaneously, improving performance and responsiveness.

    • Concurrency in Java is achieved through the use of threads.

    • Threads allow different parts of a program to run concurrently.

    • Java provides built-in support for concurrency with classes like Thread and Executor.

    • Concurrency can help improve performance by utilizing multiple CPU cores efficiently.

    • However, concurr...

  • Answered by AI

Skills evaluated in this interview

Analyst Interview Questions asked at other Companies

Q1. N-th Fibonacci NumberYou are given an integer ‘N’, your task is to find and return the N’th Fibonacci number using matrix exponentiation. Since the answer can be very large, return the answer modulo 10^9 +7. Fibonacci number is calculated u... read more
View answer (5)

Wissen Technology Interview FAQs

How many rounds are there in Wissen Technology interview?
Wissen Technology interview process usually has 2-3 rounds. The most common rounds in the Wissen Technology interview process are Technical, Coding Test and Resume Shortlist.
How to prepare for Wissen Technology 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 Wissen Technology. The most common topics and skills that interviewers at Wissen Technology expect are Java, Telecom, Consulting, SQL and Business Intelligence.
What are the top questions asked in Wissen Technology interview?

Some of the top questions asked at the Wissen Technology interview -

  1. Parent class has run() and walk() . Parent run() - calls walk() Child Class ov...read more
  2. 2. What will happen if hashcode only returns a constant? How will it affect the...read more
  3. How to sort a list of students on the basis of their First na...read more
How long is the Wissen Technology interview process?

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

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Wissen Technology Interview Process

based on 147 interviews

Interview experience

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Wissen Technology Reviews and Ratings

based on 487 reviews

3.9/5

Rating in categories

3.8

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3.7

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3.8

Salary

3.8

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3.7

Company culture

3.6

Promotions

3.7

Work satisfaction

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