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Thales

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3.7

based on 378 Reviews

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Thales Interview Questions and Answers

Updated 16 Mar 2025

Thales Interview Experiences

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47 interviews found

Software Engineer Interview Questions & Answers

user image Anonymous

posted on 15 Apr 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Job Portal and was interviewed before Apr 2023. There was 1 interview round.

Round 1 - Technical 

(3 Questions)

  • Q1. Basics of testing
    • Add your answer
  • Q2. Sql basic, joins
    • Add your answer
  • Q3. Unix and shell scripting
    • Add your answer

Top Thales Software Engineer Interview Questions and Answers

Q1. Reverse a String Problem Statement Given a string STR containing characters from [a-z], [A-Z], [0-9], and special characters, determine the reverse of the string. Input: The input starts with a single integer 'T', which represents the numbe... read more
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 (217)

Software Engineer Interview Questions & Answers

user image Anonymous

posted on 4 Apr 2022

I appeared for an interview in Oct 2021.

Round 1 - Video Call 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with basic DSA questions. Questions on Selenium and Linux commands were also asked.

  • Q1. 

    Reverse a String Problem Statement

    Given a string STR containing characters from [a-z], [A-Z], [0-9], and special characters, determine the reverse of the string.

    Input:

    The input starts with a single i...
  • Ans. 

    Reverse a given string containing characters from [a-z], [A-Z], [0-9], and special characters.

    • Iterate through the characters of the string from end to start and append them to a new string to get the reversed string.

    • Use built-in functions like reverse() or StringBuilder in languages like Java for efficient reversal.

    • Handle special characters and numbers along with alphabets while reversing the string.

    • Ensure to print eac...

    • Answered by AI
    Add your answer
  • Q2. 

    Duplicate Characters in a String

    Given a string 'S' of length 'N', identify and return all the characters in the string that appear more than once along with their frequency.

    Example:

    Input:
     N = 5
     S =...
  • Ans. 

    Identify and return all characters in a string that appear more than once along with their frequency.

    • Iterate through the string and count the frequency of each character using a hashmap.

    • Return characters with frequency greater than 1 in an array of tuples.

    • Answered by AI
    Add your answer
  • Q3. What is the cut command in Linux and how do you use it?
  • Ans. 

    The cut command in Linux is used to extract sections from each line of input.

    • Used to cut out specific sections of text from a file or input stream

    • Can specify the delimiter used to separate fields

    • Options include -c for characters, -f for fields, and -d to specify the delimiter

    • Example: cut -d',' -f1,3 file.txt

    • Answered by AI
    Add your answer
  • Q4. What is the Find command in Linux and how is it used?
  • Ans. 

    The Find command in Linux is used to search for files and directories based on specified criteria.

    • Used to search for files and directories in a specified directory

    • Criteria can include file name, size, permissions, and more

    • Can be combined with other commands like -exec to perform actions on found files

    • Answered by AI
    Add your answer

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAThales interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, Linux, Aptitude, OOPS, SeleniumTime required to prepare for the interview - 4 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewRejected

Skills evaluated in this interview

Top Thales Software Engineer Interview Questions and Answers

Q1. Reverse a String Problem Statement Given a string STR containing characters from [a-z], [A-Z], [0-9], and special characters, determine the reverse of the string. Input: The input starts with a single integer 'T', which represents the numbe... read more
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 (217)

Senior Engineer Product Development Interview Questions & Answers

user image Anonymous

posted on 17 Nov 2023

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before Nov 2022. 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 

(1 Question)

  • Q1. Technical questions related to my working background
    • Add your answer
Round 3 - Behavioral 

(1 Question)

  • Q1. Basic questions about company and job role
  • Ans. Ir was nice talking to them.
    • Answered Anonymously
    Add your answer
Round 4 - HR 

(1 Question)

  • Q1. Introduction and salary breakup discussion
    • Add your answer

Senior Engineer Product Development Interview Questions asked at other Companies

Q1. What is copy constructor? Write Syntax? Why there's const and & in the syntax of copy constructor.
View answer (1)

What people are saying about Thales

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a software engineer
1w
Help me decide
Currently working at fractal with 13.5lpa(11.6fixed) have a offer at Thales of 22lpa(20.1 fixed) please help me decide
Got a question about Thales?
Ask anonymously on communities.

SDE Interview Questions & Answers

user image Anonymous

posted on 12 Jun 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Jun 2023. There was 1 interview round.

Round 1 - Aptitude Test 

Dsa test with 2 questions

SDE Interview Questions asked at other Companies

Q1. Return Subsets Sum to K Problem Statement Given an integer array 'ARR' of size 'N' and an integer 'K', return all the subsets of 'ARR' which sum to 'K'. Explanation: A subset of an array 'ARR' is a tuple that can be obtained from 'ARR' by r... read more
View answer (1)

Thales interview questions for popular designations

 Senior Software Engineer

 (9)

 Software Engineer

 (6)

 Technical Lead

 (4)

 Cloud Operations Engineer

 (3)

 Security Engineer

 (1)

 Data Analyst

 (1)

 Software Developer

 (1)

 Process Associate

 (1)

Software Engineer Interview Questions & Answers

user image Anonymous

posted on 2 May 2022

Round 1 - Technical 

(1 Question)

  • Q1. Core Java Spring EJB Rest API
    • Add your answer
Round 2 - Technical 

(1 Question)

  • Q1. Core Java Spring Design Pattern
    • Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Good Core Java, and Spring knowledge should suffice

Top Thales Software Engineer Interview Questions and Answers

Q1. Reverse a String Problem Statement Given a string STR containing characters from [a-z], [A-Z], [0-9], and special characters, determine the reverse of the string. Input: The input starts with a single integer 'T', which represents the numbe... read more
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 (217)

Software Engineer Interview Questions & Answers

user image Anonymous

posted on 9 Oct 2021

I applied via Campus Placement and was interviewed in Sep 2021. There were 4 interview rounds.

Interview Questionnaire 

5 Questions

  • Q1. Concept about Java and it’s experience and in depth analysis of code with different situations
    • Add your answer
  • Q2. OOPS concept
    • Add your answer
  • Q3. Sorting Algorithm
  • Ans. 

    Sorting algorithm is a method of arranging elements in a specific order.

    • Common sorting algorithms include bubble sort, insertion sort, selection sort, merge sort, quick sort, and heap sort.

    • The choice of sorting algorithm depends on the size of the data set, the data type, and the desired time complexity.

    • Sorting algorithms can be implemented in various programming languages such as Java, Python, and C++.

    • Answered by AI
    Add your answer
  • Q4. Project discussion in detail
    • Add your answer
  • Q5. A thorough questions based on your resume so make sure you know everything in detail from projects to tech stack used
    • Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Be honest. It’ll be appreciated to be honest if you don’t have much idea about it rather than being over confident. Also whatever you know about learn in detail. For example I was given to write a code showing inheritance, I was asked questions on multiple scenario it is important to understand the in depth of concept of all keywords like static and annotations (@override) as this is basic but we need to know about how it works and what exactly happens when we don’t have it.

Skills evaluated in this interview

Top Thales Software Engineer Interview Questions and Answers

Q1. Reverse a String Problem Statement Given a string STR containing characters from [a-z], [A-Z], [0-9], and special characters, determine the reverse of the string. Input: The input starts with a single integer 'T', which represents the numbe... read more
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 (217)

Jobs at Thales

View all

Technical Lead Interview Questions & Answers

user image Anonymous

posted on 11 Jul 2022

Round 1 - One-on-one 

(1 Question)

  • Q1. Have a good knowledge on your current tasks.
    • Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Have a good knowledge about your current project.

Technical Lead Interview Questions asked at other Companies

Q1. 1. Explain 5 mins the flow from requirement analysis to production deployment and tools used in the process. 2. What is auto-scaling in a microservices architecture? 3. Difference between micro-service and serverless. 4. If you were going t... read more
View answer (4)

Software Engineer Interview Questions & Answers

user image Anonymous

posted on 29 Oct 2021

Interview Questionnaire 

3 Questions

  • Q1. 1. some basic questions related to selenium.
    • Add your answer
  • Q2. 2. reverse a string, find a duplicate in a string.
  • Ans. 

    Reverse a string and find a duplicate in an array of strings.

    • To reverse a string, we can use the built-in reverse() method or loop through the string and append each character to a new string in reverse order.

    • To find a duplicate in an array of strings, we can use a hash table to keep track of the frequency of each string and return the first string with a frequency greater than 1.

    • Answered by AI
    Add your answer
  • Q3. Some Linux basic command, cut, find.
    • Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Write a simple resume and be extra polite.

Top Thales Software Engineer Interview Questions and Answers

Q1. Reverse a String Problem Statement Given a string STR containing characters from [a-z], [A-Z], [0-9], and special characters, determine the reverse of the string. Input: The input starts with a single integer 'T', which represents the numbe... read more
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 (217)

Senior QA Engineer Interview Questions & Answers

user image Neha Srivastava

posted on 16 Oct 2023

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Oct 2022. 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 

(1 Question)

  • Q1. Security base question
    • Add your answer
Round 3 - Coding Test 

Python question and selenium

Round 4 - HR 

(1 Question)

  • Q1. Salary discussion and some basic questions
    • Add your answer

Senior QA Engineer Interview Questions asked at other Companies

Q1. Combination Sum Problem Statement Given an array of distinct positive integers ARR and a non-negative integer 'B', find all unique combinations in the array where the sum is equal to 'B'. Numbers can be chosen multiple times from ARR. Ensur... read more
View answer (1)

Senior Software Engineer Interview Questions & Answers

user image Anonymous

posted on 14 Mar 2022

I appeared for an interview before Mar 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 90 Minutes
Round difficulty - Medium

Mainly mcqs and some coding questions

  • Q1. 

    Nth Fibonacci Number Problem Statement

    Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2), with initial conditions F(1) = F(2) = 1.

    Input:

    ...
  • Ans. 

    Calculate the Nth Fibonacci number efficiently using dynamic programming.

    • Use dynamic programming to store previously calculated Fibonacci numbers to avoid redundant calculations.

    • Start with base cases F(1) and F(2) as 1, then iterate to calculate subsequent Fibonacci numbers.

    • Optimize the solution to have a time complexity of O(N) by storing and reusing calculated values.

    • Answered by AI
    Add your answer
Round 2 - Telephonic Call 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Easy

Introduction and some Python Questions

  • Q1. 

    String Palindrome Verification

    Given a string, your task is to determine if it is a palindrome considering only alphanumeric characters.

    Input:

    The input is a single string without any leading or trailing...
  • Ans. 

    Check if a given string is a palindrome considering only alphanumeric characters.

    • Remove non-alphanumeric characters from the input string before checking for palindrome.

    • Use two pointers approach to compare characters from start and end of the string.

    • Convert all characters to lowercase for case-insensitive comparison.

    • Return true if the string is a palindrome, false otherwise.

    • Answered by AI
    Add your answer
Round 3 - Video Call 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Easy

Questions related to cloud deployments and all

  • Q1. Can you explain your approach to project scaling in AWS?
  • Ans. 

    My approach to project scaling in AWS involves utilizing auto-scaling groups, load balancers, and monitoring tools.

    • Utilize auto-scaling groups to automatically adjust the number of EC2 instances based on traffic patterns

    • Implement load balancers to distribute incoming traffic evenly across multiple instances

    • Use monitoring tools like CloudWatch to track performance metrics and make informed scaling decisions

    • Answered by AI
    Add your answer
Round 4 - HR 

(1 Question)

Round duration - 45 Minutes
Round difficulty - Easy

Mainly discussed the future goals and expectations from the company

  • Q1. Can you discuss your work experience, the company culture you've encountered, and your future expectations regarding growth opportunities?
    • Add your answer

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Senior Software Engineer in NoidaEligibility criteriaNo criteriaThales interview preparation:Topics to prepare for the interview - Python, Data structures, Docker, AWS, JenkinsTime required to prepare for the interview - 2 MonthsInterview preparation tips for other job seekers

Tip 1 : Solve coding questions on daily basis
Tip 2 : Start giving interview as early as possible
Tip 3 : Write down the questions being asked in interview

Application resume tips for other job seekers

Tip 1 : Resume should be focused on a particular profile
Tip 2 : Should mention good project experience

Final outcome of the interviewSelected

Skills evaluated in this interview

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
View answer (2)
More about working at Thales

Thales Interview FAQs

How many rounds are there in Thales interview?
Thales interview process usually has 2-3 rounds. The most common rounds in the Thales interview process are Technical, HR and Resume Shortlist.
How to prepare for Thales 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 Thales. The most common topics and skills that interviewers at Thales expect are Aerospace, Operations, Identity Management, Avionics and Python.
What are the top questions asked in Thales interview?

Some of the top questions asked at the Thales interview -

  1. Define Abstraction 2 cubes puzzle Define laws of...read more
  2. Which tools you have worked ...read more
  3. 2. reverse a string, find a duplicate in a stri...read more
How long is the Thales interview process?

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

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Thales Interviews By Designations

Interview Questions for Popular Designations

Thales Interview Process

based on 39 interviews

Interview experience

4.1
  
Good
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Thales Reviews and Ratings

based on 378 reviews

3.7/5

Rating in categories

3.3

Skill development

3.8

Work-life balance

3.5

Salary

3.7

Job security

3.5

Company culture

3.1

Promotions

3.3

Work satisfaction

Explore 378 Reviews and Ratings
Jobs at Thales
Senior Software Engineer

Noida

8-13 Yrs

Not Disclosed

TechOps Engineer

Noida

2-6 Yrs

Not Disclosed

Senior Sales Engineer (Bangalore)

Mumbai

3-8 Yrs

Not Disclosed

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