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Bharti Airtel Software Developer Interview Questions, Process, and Tips

Updated 15 Jan 2025

Top Bharti Airtel Software Developer Interview Questions and Answers

  • Q1. Longest Common Prefix After Rotation You are given two strings 'A' and 'B'. While string 'A' is constant, you may apply any number of left shift operations to string 'B' ...read more
  • Q2. Longest Subarray with Zero Sum Ninja enjoys working with numbers, and as a birthday challenge, his friend provides him with an array consisting of both positive and nega ...read more
  • Q3. Character Frequency Problem Statement You are given a string 'S' of length 'N'. Your task is to find the frequency of each character from 'a' to 'z' in the string. Examp ...read more
View all 9 questions

Bharti Airtel Software Developer Interview Experiences

5 interviews found

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

(1 Question)

  • Q1. How to optimise fetching 1 lakh entries from db
  • Ans. 

    Use pagination, indexing, caching, and query optimization to fetch 1 lakh entries efficiently from the database.

    • Implement pagination to fetch data in smaller chunks

    • Create indexes on columns frequently used in queries

    • Use caching to store frequently accessed data

    • Optimize queries by avoiding unnecessary joins and using appropriate indexes

    • Consider using database-specific optimizations like query hints or stored procedures

  • Answered by AI

I was interviewed in Jan 2022.

Round 1 - Video Call 

Round duration - 60 Minutes
Round difficulty - Medium

The round started with the Introduction followed by the discussion of projects done mentioned in my resume(all related to Machine Learning and Deep Learning). Then the recruiter asked me about my previous company experience and the work which I was doing there. After the discussion, interviewer started asking basic questions of SQL and PLSQL.

Round 2 - Video Call 

(1 Question)

Round duration - 70 Minutes
Round difficulty - Hard

Interviewer directly started asking questions in SQL,PLSQL AND SHELL SCRIPTING

  • Q1. Write an SQL query to find the second highest salary.
  • Ans. 

    SQL query to find the second highest salary

    • Use the ORDER BY clause to sort the salaries in descending order

    • Use the LIMIT clause to limit the result to the second row

    • Use a subquery to exclude the highest salary from the result

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaMandatory Experience in SQL, PLSQLAirtel interview preparation:Topics to prepare for the interview - DBMS, MySQL, PLSQL, Linux, Shell Scripting, Oracle Apps, Machine Learning with PythonTime required to prepare for the interview - 4 MonthsInterview preparation tips for other job seekers

Tip 1 : Remember all the basic commands and their syntax in PLSQL
Tip 2 : Try to optimize the query being asked in the interview.

Application resume tips for other job seekers

Tip 1 : No false things.
Tip 2 : Highlight your achievements and skills.

Final outcome of the interviewSelected

Skills evaluated in this interview

Software Developer Interview Questions Asked at Other Companies

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Q1. Maximum Subarray Sum Problem Statement Given an array of integers ... read more
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Q2. Minimum Number of Platforms Needed Problem Statement You are give ... read more
asked in Rakuten
Q3. Merge Two Sorted Arrays Problem Statement Given two sorted intege ... read more
asked in Cognizant
Q4. Nth Fibonacci Number Problem Statement Calculate the Nth term in ... read more
Q5. Find Duplicate in Array Problem Statement You are provided with a ... read more
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Jul 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 Resume tips
Round 2 - Coding Test 

Coding round with 3 DSA questions and a few MCQs on aptitude.

Round 3 - One-on-one 

(1 Question)

  • Q1. Interviewer asked questions on DSA.
Round 4 - One-on-one 

(1 Question)

  • Q1. The interviewer asked general questions on DSA.

I was interviewed before May 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

Online Technical Interview ( Coding Round) with 2 medium-hard problem

  • Q1. 

    Trapping Rain Water Problem Statement

    You are given a long type array/list ARR of size N, representing an elevation map. The value ARR[i] denotes the elevation of the ith bar. Your task is to determine th...

  • Ans. 

    Calculate the total amount of rainwater that can be trapped between given elevations in an elevation map.

    • Iterate through the array to find the maximum height on the left and right of each bar.

    • Calculate the amount of water that can be trapped above each bar by taking the minimum of the maximum heights on the left and right.

    • Sum up the trapped water above each bar to get the total trapped water for the elevation map.

  • Answered by AI
  • Q2. 

    Longest Consecutive Sequence Problem Statement

    You are provided with an unsorted array/list ARR of N integers. Your task is to determine the length of the longest consecutive sequence present in the array...

  • Ans. 

    Find the length of the longest consecutive sequence in an unsorted array of integers.

    • Iterate through the array and store each element in a set for constant time lookup.

    • For each element, check if it is the start of a sequence by looking for its previous number in the set.

    • Update the length of the current consecutive sequence and track the longest sequence found so far.

    • Return the length of the longest consecutive sequence...

  • Answered by AI
Round 2 - Coding Test 

(2 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

Online Technical Coding Interview

  • Q1. 

    Stack using Two Queues Problem Statement

    Develop a Stack Data Structure to store integer values using two Queues internally.

    Your stack implementation should provide these public functions:

    Explanation:

    ...
  • Ans. 

    Implement a stack using two queues to store integer values with specified functions.

    • Create a stack using two queues internally

    • Implement functions for push, pop, top, size, and isEmpty

    • Handle edge cases such as empty stack or invalid data

    • Ensure the stack functions work correctly and efficiently

    • Test the implementation with sample inputs and outputs

  • Answered by AI
  • Q2. 

    Left View of a Binary Tree

    Given a binary tree, your task is to print the left view of the tree. The left view of a binary tree contains the nodes visible when the tree is viewed from the left side.

    Inpu...

  • Ans. 

    Print the left view of a binary tree, containing nodes visible from the left side.

    • Traverse the tree in a level order manner and print the first node at each level.

    • Use a queue to keep track of nodes at each level.

    • Handle null nodes represented by -1 in the input.

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 cgpaAirtel interview preparation:Topics to prepare for the interview - Data structure and algorithms, Object Oriented Programming, Database, SQL, Coding BasicsTime required to prepare for the interview - 6 MonthsInterview preparation tips for other job seekers

Tip 1 : Practice problem solving as much as you can 
Tip 2 : Try to solve online coding problem as much as possible to get good understanding of DSA
Tip 3 : Be confident with your Resume

Application resume tips for other job seekers

Tip 1 : Should have some projects on resume 
Tip 2 : Resume sections should be clear and no false information

Final outcome of the interviewSelected

Skills evaluated in this interview

Bharti Airtel interview questions for designations

 Software Engineer

 (8)

 Senior Software

 (1)

 Software Engineer2

 (1)

 Backend Developer

 (1)

 ERP Developer

 (1)

 Trainee Developer

 (1)

 SQL Developer

 (1)

 Lead Developer

 (1)

I was interviewed in Oct 2020.

Round 1 - Coding Test 

(2 Questions)

Round duration - 90 minutes (60 minutes for coding and 30 minutes for MCQs)
Round difficulty - Medium

The test was conducted in the evening from 7:00 pm to 8:30 pm. Because of the covid situation, the test was online and was given by all the students from their home. 
Login window of 15 minutes was given and all students were supposed to login within initial 15 minutes (between 7:00 and 7:15 pm). The test was conducted on AMCAT and webcam was on during the whole test duration.
There were two sections in the test: 1.) Coding round with 2 coding questions - 60 minutes (2.) MCQ round with 30 MCQs - 30 minutes
120 students appeared for this round and 20 were shortlisted for further process.

  • Q1. 

    Character Frequency Problem Statement

    You are given a string 'S' of length 'N'. Your task is to find the frequency of each character from 'a' to 'z' in the string.

    Example:

    Input:
    S : abcdg
    Output:
    1...
  • Ans. 

    Given a string, find the frequency of each character from 'a' to 'z' in the string.

    • Create an array of size 26 to store the frequency of each character from 'a' to 'z'.

    • Iterate through the string and increment the count of the corresponding character in the array.

    • Print the array of frequencies as the output for each test case.

  • Answered by AI
  • Q2. 

    Longest Common Prefix After Rotation

    You are given two strings 'A' and 'B'. While string 'A' is constant, you may apply any number of left shift operations to string 'B'.

    Explanation:

    Your task is to calcu...

  • Ans. 

    Calculate the minimum number of left shift operations needed to achieve the longest common prefix between two strings.

    • Apply left shift operations to string B to find the longest common prefix with string A

    • Count the number of left shifts needed to achieve the longest common prefix

    • Return the minimum number of left shift operations for each test case

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 50-60 minutes
Round difficulty - Medium

This round started at 11 am and went till 3 pm. 
Out of 120 students that appeared in online coding test, 20 were shortlisted for the first round of interviews.
In this round, everyone was asked some moderate level coding questions. We were supposed to write the code in our IDE, present the screen and show the interviewer the output of our code.
The interview started with the introduction being followed by 2 coding problems.

  • Q1. 

    Longest Subarray with Zero Sum

    Ninja enjoys working with numbers, and as a birthday challenge, his friend provides him with an array consisting of both positive and negative integers. Ninja is curious to ...

  • Ans. 

    Find the length of the longest subarray with zero sum in an array of integers.

    • Iterate through the array and keep track of the running sum using a hashmap.

    • If the running sum is seen before, the subarray between the current index and the previous index with the same sum is a subarray with zero sum.

    • Update the length of the longest subarray with zero sum as you iterate through the array.

    • Example: For arr1 = [1, -1, 3, 2, -2...

  • Answered by AI
Round 3 - HR 

Round duration - 20 minutes
Round difficulty - Medium

7 students were shortlisted for the HR round. This round started at 7:30 pm and went till 8:30 pm.
Like all the other rounds, this round too was virtual (on google meet). In the beginning, the interviewer introduced himself and then asked questions based on my resume.
All the 7 candidates were selected in the HR round.

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from National Institute of Technology, Kurukshetra. Eligibility criteriaAbove 7.5 CGPAAirtel interview preparation:Topics to prepare for the interview - Object-Oriented Programming, Data Structures and Algorithms, Operating System, Database Management System, Computer NetworksTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Questions are asked on DSA, so practice questions and it is not the number of questions you practice, but how well you practice the questions. Prepare a notebook and write down the approach you follow. Make proper notes and maintain that notebook. Will help for quick revision.
Tip 2 : Conceptual questions are asked from topics other than DSA. So watching videos on youtube will not help. Read the book thoroughly to make yourself ready for interviews.
Tip 3 : ALWAYS read about the real-life examples of the concepts you read. This is often asked in interviews and you will definitely regret failing to answer this question.

Application resume tips for other job seekers

Tip 1 : Having projects in resume will help you to give the direction to your interview, which increases the chances of selection.
Tip 2 : Add some achievements other than academics, it shows that you are a team player and increases the probability of getting shortlisted. BUT do not write anything that is not true or else, it will backfire.

Final outcome of the interviewSelected

Skills evaluated in this interview

Get interview-ready with Top Bharti Airtel Interview Questions

Interview questions from similar companies

Interview Questionnaire 

2 Questions

  • Q1. They asked me on java and I have joined as a fresher they not much questions as I got selected as fresher on oops concepts and collections
  • Q2. Please be confident while facing interview and they will check your communication skills

I applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Mcq based on language

Round 2 - One-on-one 

(1 Question)

  • Q1. Do you know STL. Find loop in linked list.
  • Ans. 

    STL knowledge and finding loop in linked list

    • STL (Standard Template Library) is a C++ library that provides containers, algorithms, and iterators.

    • To find a loop in a linked list, we can use Floyd's cycle-finding algorithm.

    • In this algorithm, we use two pointers, one moving at a slower pace and the other at a faster pace.

    • If there is a loop in the linked list, the faster pointer will eventually catch up to the slower poin...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Have basic DSA and OOPs understanding. Questions are not tough. Basic knowledge is enough.

Skills evaluated in this interview

Interview Questionnaire 

1 Question

  • Q1. Time management

Interview Questionnaire 

1 Question

  • Q1. Sql joins

Interview Preparation Tips

Interview preparation tips for other job seekers - go to google and search it

Interview Questionnaire 

2 Questions

  • Q1. Python
  • Q2. Webdevelopment
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Bharti Airtel Interview FAQs

How many rounds are there in Bharti Airtel Software Developer interview?
Bharti Airtel interview process usually has 2-3 rounds. The most common rounds in the Bharti Airtel interview process are One-on-one Round, Resume Shortlist and Coding Test.
What are the top questions asked in Bharti Airtel Software Developer interview?

Some of the top questions asked at the Bharti Airtel Software Developer interview -

  1. How to optimise fetching 1 lakh entries from...read more
  2. The interviewer asked general questions on D...read more
  3. Interviewer asked questions on D...read more

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Bharti Airtel Software Developer Interview Process

based on 3 interviews

Interview experience

4
  
Good
View more
Bharti Airtel Software Developer Salary
based on 140 salaries
₹5.7 L/yr - ₹23.4 L/yr
70% more than the average Software Developer Salary in India
View more details

Bharti Airtel Software Developer Reviews and Ratings

based on 15 reviews

4.2/5

Rating in categories

3.8

Skill development

4.0

Work-life balance

3.6

Salary

3.8

Job security

3.7

Company culture

3.0

Promotions

3.5

Work satisfaction

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