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Lumen Technologies Software Engineer Interview Questions and Answers

Updated 26 Apr 2022

Lumen Technologies Software Engineer Interview Experiences

3 interviews found

I applied via Approached by Company and was interviewed in Mar 2022. There were 4 interview rounds.

Round 1 - Aptitude Test 

Standard test

Round 2 - Coding Test 

Difficult problem to solve

Round 3 - HR 

(1 Question)

  • Q1. What are your strengths and weaknesses?
  • Ans. 

    My strengths include problem-solving, attention to detail, and teamwork. My weaknesses include time management and public speaking.

    • Strengths: problem-solving, attention to detail, teamwork

    • Weaknesses: time management, public speaking

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

(1 Question)

  • Q1. Manager discussion to understand career path

Interview Preparation Tips

Topics to prepare for Lumen Technologies Software Engineer interview:
  • Company Research
  • Telecom
  • technology
Interview preparation tips for other job seekers - Doing research about the company is helpful and ask questions about life at Lumen.
Round 1 - Technical 

(2 Questions)

  • Q1. Prepare dsa well, and
  • Q2. Dynamic programming, array concepts

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare DSA well, aling with some dynamic programming

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Interview Questionnaire 

3 Questions

  • Q1. Why do you want to join this company?
  • Ans. 

    I am excited to join this company because of its reputation for innovation and commitment to employee growth.

    • I am impressed by the company's track record of developing cutting-edge software solutions.

    • I appreciate the emphasis on professional development and growth opportunities for employees.

    • I am excited about the prospect of working with a talented and dedicated team.

    • I believe that this company's values align with my ...

  • Answered by AI
  • Q2. Who is your role model?
  • Ans. 

    My role model is Elon Musk.

    • I admire his innovative thinking and determination to push boundaries.

    • His ability to lead multiple successful companies is inspiring.

    • His focus on sustainable energy and space exploration aligns with my values.

    • I strive to emulate his work ethic and passion for making a positive impact on the world.

  • Answered by AI
  • Q3. What extra-curricular activities have you been involved in?
  • Ans. 

    I have been involved in various extra-curricular activities such as volunteering, sports, and music.

    • Volunteered at local animal shelter

    • Played on intramural basketball team

    • Participated in school choir

    • Attended coding workshops and hackathons

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: I consulted my seniors for preparation of my resume. I believe that seniors provide the best possible insights in this regards. I had a standard resume for all the companies.

Round: Test
Experience: I had prepared for the CAT examination which helped me in these written tests. The first round was the written test. The criterion for the written test was to have a CGPA more than 6.0. There was an aptitude test and a technical test. The technical test consisted of programming questions based on C++ and data structures. From data structures they asked a lot questions based on tree traversals and from C++. A large number of questions from pointers and arrays were also asked.
The aptitude test was slightly easier than the CAT examination standards. Majority of the questions were related to data interpretation and some were of based on logical reasoning. The total duration of the both the tests combined was 90 minutes.

Around 50 people appeared for the first round and nearly 13 got shortlisted for the next round.
Tips: For the written tests, particularly the aptitude section, if would really help if you have prepared for the CAT examination. There is a book written by an author named R.S. Agarwal which would prove to be beneficial from the point of view of these written tests.
Duration: 90 minutes

Round: Group Discussion
Experience: I did not prepare much for the GD’s. However I did keep myself abreast with certain latest happenings.There were no group activities conducted in the recruitment process of Century Link.

Round: HR Interview
Experience: For HR interviews I prepared answers to some frequently asked HR questions. I found these questions on the internet. Generally the questions asked in the interviews are related to the profile on offer; for instance in A2Z interview I was asked a lot of questions from power systems since it was a core company and in Century Links I was asked questions from C++ and data structures since they had come to recruit for a software engineering profile.

Round: Technical Interview
Experience: In this interview I was questioned on my C++ and data structure knowledge. They asked me questions on pointers and further asked me to explain the concept of dangling pointers. They did not want me to write down the complete code with proper syntax's of the problems asked to me. They only asked me to write the algorithms of the various problems.
They also asked me some puzzles. Unfortunately, I was not able to solve any of them. During the course of the interview they asked me to specify the reason for my keen interest in joining an IT company.
At the end of first interview some candidates were shortlisted and called for the second round of interview.

Round: Technical Interview
Experience: The second interview was conducted by a senior company official. He enquired about my project and again, like in the first interview, asked me to state the reason for my interest in joining an IT company.This interview round was an elimination round.

Round: HR Interview
Experience: The interview was an HR interview. Candidates who reached till this interview were all selected; basically this interview was like a formality to check the candidate’s fit with the company.

College Name: IIT ROORKEE
Motivation: I had never heard of the company before the recruitment season. I attended the PPT organised by the company, I found the company to be a well reputed/established company and thus applied to it. The profile was open for Electrical, Computer Science, Mechanical and Electronics engineering students.

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Not Selected

I applied via campus placement at BRACT's Vishwakarma Institute of Information Technology, Pune and was interviewed in Oct 2024. There was 1 interview round.

Round 1 - One-on-one 

(4 Questions)

  • Q1. What is polymorphism
  • Ans. 

    Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.

    • Polymorphism allows objects of different classes to be treated as objects of a common superclass.

    • It enables a single interface to be used for different data types or classes.

    • Examples include method overloading and method overriding in object-oriented programming.

  • Answered by AI
  • Q2. Find missing number from nth number array.
  • Ans. 

    Find missing number from nth number array.

    • Iterate through the array and calculate the sum of all numbers

    • Calculate the sum of numbers from 1 to n using the formula n*(n+1)/2

    • Subtract the sum of array from the sum of numbers from 1 to n to find the missing number

  • Answered by AI
  • Q3. Explain inheritance and it types
  • Ans. 

    Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

    • Inheritance allows a class to reuse code from another class.

    • Types of inheritance include single inheritance, where a class inherits from only one parent class, and multiple inheritance, where a class inherits from multiple parent classes.

    • Example: Class B inherits from Class A, so Class B can access

  • Answered by AI
  • Q4. Find 2nd max elements from aaray
  • Ans. 

    Find 2nd max element from array of strings

    • Sort the array in descending order

    • Skip the first element (max element)

    • Return the second element

  • Answered by AI

Skills evaluated in this interview

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Very good but easy
easy question long question

Round 2 - Technical 

(2 Questions)

  • Q1. Java codingg on sql programming
  • Q2. Colection framework java concept
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed in Jul 2024. There were 3 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Trie based question
  • Q2. Design LRU cache
  • Ans. 

    Design a data structure for LRU cache with get and put operations, evicting least recently used item when capacity is reached.

    • Implement a doubly linked list to keep track of the order of keys based on their usage

    • Use a hashmap to store key-value pairs for quick access

    • Update the order of keys in the linked list when a key is accessed or inserted

    • Evict the least recently used item when the cache reaches its capacity

  • Answered by AI
Round 2 - System Design 

(2 Questions)

  • Q1. Unique ID generator
  • Q2. Project related questions
Round 3 - Behavioral 

(2 Questions)

  • Q1. Operating systems, DBMS
  • Q2. Few question on projects from my previous company

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Hacker rank, 3 questions with 1 hour duration

Round 2 - Technical 

(2 Questions)

  • Q1. Stack parenthesis matching
  • Q2. Linked List reversal
Round 3 - Behavioral 

(3 Questions)

  • Q1. Operating System basics
  • Q2. Behavorial questions
  • Q3. Networking Basics
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Difficult online round

Round 2 - One-on-one 

(2 Questions)

  • Q1. Arrays from neetcode
  • Ans. 

    Arrays are a collection of strings in programming used to store multiple values under a single variable name.

    • Arrays are declared using square brackets []

    • Each element in an array is accessed by its index, starting from 0

    • Example: var fruits = ['apple', 'banana', 'orange']

  • Answered by AI
  • Q2. Linked list from neetcode
Round 3 - One-on-one 

(2 Questions)

  • Q1. Trees in neet code
  • Ans. 

    Trees in neet code refer to the implementation of tree data structures in coding challenges on the platform NeetCode.

    • Trees are a common data structure used in coding challenges to represent hierarchical relationships between data.

    • Common tree operations include traversal (inorder, preorder, postorder), insertion, deletion, and searching.

    • Examples of tree-related coding challenges on NeetCode include implementing a binary...

  • Answered by AI
  • Q2. Trees in leet code
  • Ans. 

    Trees in leetcode are a common topic for coding interviews, involving various tree traversal and manipulation techniques.

    • Understand different tree traversal methods like inorder, preorder, and postorder.

    • Learn about common tree algorithms like finding the height, diameter, and lowest common ancestor.

    • Practice solving tree-related problems on leetcode to improve your skills.

  • Answered by AI

Skills evaluated in this interview

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

Basic java mcq, Java Hibernate Spring MVC framework questions

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(1 Question)

  • Q1. Os , CPP , bit manipulation
Round 2 - One-on-one 

(1 Question)

  • Q1. Os , threads,cpp, python

Lumen Technologies Interview FAQs

How many rounds are there in Lumen Technologies Software Engineer interview?
Lumen Technologies interview process usually has 2-3 rounds. The most common rounds in the Lumen Technologies interview process are Aptitude Test, Coding Test and HR.
How to prepare for Lumen Technologies Software Engineer 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 Lumen Technologies. The most common topics and skills that interviewers at Lumen Technologies expect are Deployment, ICMP, Microsoft Windows, Perl and Python.
What are the top questions asked in Lumen Technologies Software Engineer interview?

Some of the top questions asked at the Lumen Technologies Software Engineer interview -

  1. Dynamic programming, array conce...read more
  2. Prepare dsa well, ...read more

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Lumen Technologies Software Engineer Salary
based on 467 salaries
₹3.3 L/yr - ₹12 L/yr
14% less than the average Software Engineer Salary in India
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Lumen Technologies Software Engineer Reviews and Ratings

based on 67 reviews

3.6/5

Rating in categories

3.5

Skill development

4.2

Work-life balance

3.3

Salary

3.9

Job security

3.6

Company culture

3.1

Promotions

3.7

Work satisfaction

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