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Qualcomm Software Engineer Interview Questions, Process, and Tips

Updated 5 Jan 2025

Top Qualcomm Software Engineer Interview Questions and Answers

  • 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 ...read more
  • Q2. Given an array A[n], write a C program to find P and Q (P>Q) such that A[P] - A[Q] is maximum
  • Q3. What is scheduling? List different types of scheduling
View all 45 questions

Qualcomm Software Engineer Interview Experiences

36 interviews found

Software Engineer Interview Questions & Answers

user image Pavan Dronavalli

posted on 18 Sep 2016

I applied via campus placement at Indian Institute of Technology (IIT), Chennai

Interview Questionnaire 

16 Questions

  • 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 us...
  • Q2. Given an array A[n], write a C program to find P and Q (P>Q) such that A[P] - A[Q] is maximum
  • Ans. 

    C program to find P and Q (P>Q) such that A[P] - A[Q] is maximum

    • Iterate through array and keep track of maximum difference and corresponding indices

    • Initialize P and Q to first two elements and update as necessary

    • Time complexity: O(n)

  • Answered by AI
  • Q3. A pyramid is given many blank spaces. Condition is that number in a cell equals sum of numbers in bottom two cells. Fill the blanks
  • Ans. 

    The question asks to fill the blanks in a pyramid where each number is the sum of the numbers in the bottom two cells.

    • Start from the bottom row and work your way up, calculating the sum of the numbers in the bottom two cells for each blank space.

    • Use a loop to iterate through each row and column of the pyramid.

    • Store the calculated sum in the corresponding blank space.

    • Repeat the process until all the blanks are filled.

  • Answered by AI
  • Q4. What are the basic functions of OS?
  • Ans. 

    OS functions include managing hardware resources, providing user interface, and running applications.

    • Managing hardware resources such as CPU, memory, and storage

    • Providing user interface for interaction with the computer

    • Running applications and managing processes

    • Managing file systems and data storage

    • Providing security and access control

    • Managing network connections and communication

    • Performing system updates and maintenan...

  • Answered by AI
  • Q5. What is scheduling? List different types of scheduling
  • Ans. 

    Scheduling is the process of allocating resources to tasks based on priority and availability.

    • Different types of scheduling include: preemptive and non-preemptive scheduling, round-robin scheduling, priority scheduling, and deadline scheduling.

    • Preemptive scheduling allows higher priority tasks to interrupt lower priority tasks, while non-preemptive scheduling does not.

    • Round-robin scheduling allocates a fixed time slice...

  • Answered by AI
  • Q6. What is a deadlock? How to know if a deadlock is present?
  • Ans. 

    A deadlock is a situation where two or more processes are unable to proceed because they are waiting for each other to release resources.

    • Deadlocks occur when two or more processes are blocked and unable to continue executing.

    • To detect a deadlock, look for circular wait, hold and wait, no preemption, and mutual exclusion.

    • Examples of deadlocks include a printer that is waiting for a user to replace the paper tray, or two...

  • Answered by AI
  • Q7. What is Moore's Law?
  • Ans. 

    Moore's Law is the observation that the number of transistors in a dense integrated circuit doubles about every two years.

    • Named after Intel co-founder Gordon Moore

    • First stated in 1965

    • Has been a driving force behind technological advancements

    • Predicts exponential growth in computing power

    • Has been challenged in recent years due to physical limitations

  • Answered by AI
  • Q8. Differentiate between a process and a thread
  • Ans. 

    A process is an instance of a program while a thread is a subset of a process.

    • A process has its own memory space while threads share memory space

    • Processes are heavyweight while threads are lightweight

    • Processes communicate through inter-process communication while threads communicate through shared memory

    • Examples of processes include web browsers, text editors, etc. while examples of threads include GUI updates, backgro

  • Answered by AI
  • Q9. What are the advantages of having multi-core processor?
  • Ans. 

    Multi-core processors provide faster and more efficient computing.

    • Improved performance and speed

    • Ability to handle multiple tasks simultaneously

    • Reduced power consumption

    • Better multitasking capabilities

    • Enhanced user experience

    • Examples: Intel Core i7, AMD Ryzen 9

  • Answered by AI
  • Q10. Tell me about yourself and your family briefly
  • Ans. 

    I am a software engineer with a loving family.

    • I have been working as a software engineer for 5 years.

    • My wife is a teacher and we have two children.

    • We enjoy spending time together outdoors and traveling.

    • My parents live in a different state but we keep in touch regularly.

    • Family is very important to me and I prioritize spending time with them.

  • Answered by AI
  • Q11. Tell me about your course projects
  • Ans. 

    Developed a web-based project management tool and a mobile app for tracking expenses

    • Created a responsive UI using React and Bootstrap

    • Implemented user authentication and authorization using Firebase

    • Integrated Google Maps API for location tracking in the mobile app

    • Used Node.js and MongoDB for backend development

    • Collaborated with a team of four to complete the projects

  • Answered by AI
  • Q12. Tell me about your professional experience
  • Ans. 

    I have 5 years of experience in software engineering with expertise in Java and Python.

    • Developed and maintained web applications using Java and Spring framework

    • Designed and implemented RESTful APIs using Python and Flask

    • Worked on database management and optimization using MySQL and MongoDB

    • Collaborated with cross-functional teams to deliver high-quality software products

    • Participated in code reviews and provided construc

  • Answered by AI
  • Q13. What are your academic interests?
  • Ans. 

    My academic interests include computer science, artificial intelligence, and machine learning.

    • Computer science

    • Artificial intelligence

    • Machine learning

  • Answered by AI
  • Q14. Explain one CS topic(of your choice) in layman terms
  • Ans. 

    Explain Big O notation

    • Big O notation is used to describe the time complexity of an algorithm

    • It helps us understand how the algorithm's performance changes with input size

    • O(1) means constant time, O(n) means linear time, O(n^2) means quadratic time

    • We want algorithms with lower Big O values for better performance

  • Answered by AI
  • Q15. What are your location preferences?
  • Ans. 

    I am open to relocation based on the job opportunity and growth prospects.

    • Open to relocation for the right opportunity

    • Willing to move for career growth

    • Flexible with location based on job requirements

  • Answered by AI
  • Q16. Would you like to have a pizza slice? ;)
  • Ans. 

    Yes, I would love to have a pizza slice!

    • I am a big fan of pizza and would never say no to a slice!

    • Pizza is the perfect food for any occasion, whether it's a quick lunch or a late-night snack.

    • I particularly enjoy pepperoni and mushroom pizza, but I'm open to trying new toppings as well.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Questions were of average difficulty but lengthy. The test was conducted between 7:30 PM and 9 PM. I had a long day so it was a little tiresome.
Tips: Time is of importance. I suggest you to quickly browse through all the questions and pick the easy ones beforehand instead of being stuck on a single difficult question.
Duration: 90 minutes
Total Questions: 60

Round: Technical Interview
Experience: I found the questions easy so I was able to answer them all.
Tips: Don't just think in your mind. Think out loud so that the interviewer can correct you.

Round: HR Interview
Experience: Interviewer was friendly. It was like talking with a friend.
Tips: Keep it short and brief. It's fine even if your English is not good. (Mine wasn't )

General Tips: Be cool and calm. If you don't know something, admit it. You can come back to it later.
Skill Tips: No need to go very deep. Just know the basics properly.
Skills: Puzzle Solving Capability, Computer Organisation, Operating System Basics, Object Oriented Programming (OOP) Basics, C Programming, Aptitude
Duration: 2
College Name: IIT Madras
Motivation: Qualcomm is an industry leader in mobile hardware. The work profile suited me well.
Funny Moments: The nice HR lady offered me a pizza slice.

Skills evaluated in this interview

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

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

Round 1 - Aptitude Test 

Aptitude and technical questions were asked

Round 2 - Technical 

(2 Questions)

  • Q1. Pattern question
  • Q2. Doubly linked list insertion
Round 3 - Behavioral 

(2 Questions)

  • Q1. C++ linked lists
  • Q2. Resume based, projects were asked.

Software Engineer Interview Questions Asked at Other Companies

asked in Qualcomm
Q1. Bridge and torch problem : Four people come to a river in the nig ... read more
asked in Capgemini
Q2. In a dark room,there is a box of 18 white and 5 black gloves. You ... read more
asked in TCS
Q3. Find the Duplicate Number Problem Statement Given an integer arra ... read more
Q4. Tell me something about yourself. Define encapsulation. What is i ... read more
asked in Paytm
Q5. Puzzle : 100 people are standing in a circle .each one is allowed ... read more
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

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

Round 1 - Aptitude Test 

First round-aptitute and technical questions from C,OS,DBMS

Round 2 - Technical 

(2 Questions)

  • Q1. What are the types of caching mechanisms?
  • Ans. 

    Types of caching mechanisms include browser caching, server-side caching, and content delivery network (CDN) caching.

    • Browser caching: storing web page resources locally on a user's device to reduce load times on subsequent visits.

    • Server-side caching: storing data in memory on the server to reduce the need to fetch data from the database repeatedly.

    • Content Delivery Network (CDN) caching: caching content on servers distr...

  • Answered by AI
  • Q2. Explain the physical memory and virtual memory
  • Ans. 

    Physical memory refers to the actual RAM installed in a computer, while virtual memory is a memory management technique that uses disk space as an extension of RAM.

    • Physical memory is the actual hardware component where data is stored temporarily for quick access by the CPU.

    • Virtual memory is a memory management technique that allows the operating system to use disk space as an extension of physical memory.

    • Physical memor...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - prepare well on data structures and normal array pointers problems on leetcode and also have a knowledge about your projects

Skills evaluated in this interview

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

(1 Question)

  • Q1. It was a dsa coding question
Round 2 - Technical 

(1 Question)

  • Q1. Its was also dsa coding ques

Qualcomm interview questions for designations

 Senior Software Engineer

 (6)

 Software Engineer Intern

 (2)

 Embedded Software Engineer

 (2)

 Associate Software Engineer

 (2)

 Senior Software Engineer 2

 (1)

 Software Developer

 (11)

 Software Tester

 (1)

 Dsp Software Engineer

 (1)

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

(2 Questions)

  • Q1. Detect endianness using C program
  • Ans. 

    Detect endianness using C program

    • Use a union to create a variable with a known value

    • Check the value of the first byte to determine endianness

    • Big endian systems store the most significant byte first

    • Little endian systems store the least significant byte first

    • Example: union { int i; char c; } u; u.i = 1; if (u.c == 1) { /* Little endian */ } else { /* Big endian */ }

  • Answered by AI
  • Q2. Count set bits using C
  • Ans. 

    Count set bits in a number using C programming language.

    • Use bitwise AND operation with 1 to check if the rightmost bit is set.

    • Shift the number to the right by 1 bit each time to check all bits.

    • Repeat the process until the number becomes 0, counting the set bits each time.

  • Answered by AI

Skills evaluated in this interview

Get interview-ready with Top Qualcomm Interview Questions

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

I applied via LinkedIn and was interviewed before Jan 2024. There were 4 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Easy and based on JD
Round 2 - Technical 

(1 Question)

  • Q1. Easy and based on JD
Round 3 - Coding Test 

Hacker rank medium c coding

Round 4 - Technical 

(1 Question)

  • Q1. Basics of Programming and mostly medium difficulty level

Software Engineer Jobs at Qualcomm

View all
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Basic bitwise question
  • Q2. Basic c question
Round 2 - Technical 

(1 Question)

  • Q1. Basic os questions
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Company Website and was interviewed in Dec 2023. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. What is volatile keyword
  • Ans. 

    Volatile keyword in Java is used to indicate that a variable's value will be modified by multiple threads.

    • Volatile keyword ensures visibility of changes made by one thread to other threads.

    • It prevents compiler optimizations that could reorder code and cause unexpected behavior in multi-threaded environments.

    • Volatile keyword is used for variables accessed by multiple threads without synchronization.

    • Example: 'volatile in

  • Answered by AI
  • Q2. Difference between union and structure
  • Ans. 

    Union is a data structure that allows storing different data types in the same memory location, while structure is a data structure that allows storing different data types in a single unit.

    • Union uses the same memory location for all its members, while structure allocates separate memory for each member.

    • In a union, only one member can be accessed at a time, while in a structure, all members can be accessed simultaneous...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for basic questions

Skills evaluated in this interview

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

1.5 Hour - 45 que

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

(1 Question)

  • Q1. Process, stack, queue, networking principles
Round 2 - Technical 

(1 Question)

  • Q1. Process, stack, queue, networking principle
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Rotate a LL with given k size
  • Ans. 

    Rotate a linked list with a given k size

    • Create a function to rotate a linked list by k nodes

    • Use two pointers to find the kth node from the end and the end node

    • Adjust the pointers to rotate the linked list accordingly

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep your OOPS, Computer Architecture, BIt Manipulation, LL concepts clear

Skills evaluated in this interview

Qualcomm Interview FAQs

How many rounds are there in Qualcomm Software Engineer interview?
Qualcomm interview process usually has 2-3 rounds. The most common rounds in the Qualcomm interview process are Technical, Coding Test and One-on-one Round.
How to prepare for Qualcomm 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 Qualcomm. The most common topics and skills that interviewers at Qualcomm expect are Python, Staffing, Computer science, C++ and Linux.
What are the top questions asked in Qualcomm Software Engineer interview?

Some of the top questions asked at the Qualcomm Software Engineer interview -

  1. Bridge and torch problem : Four people come to a river in the night. There is a...read more
  2. Given an array A[n], write a C program to find P and Q (P>Q) such that A[P] - A...read more
  3. What is scheduling? List different types of schedul...read more
How long is the Qualcomm Software Engineer interview process?

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

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Qualcomm Software Engineer Interview Process

based on 24 interviews

5 Interview rounds

  • Technical Round
  • HR Round - 1
  • Aptitude Test Round
  • HR Round - 2
  • Personal Interview1 Round
View more
Qualcomm Software Engineer Salary
based on 961 salaries
₹10 L/yr - ₹36 L/yr
175% more than the average Software Engineer Salary in India
View more details

Qualcomm Software Engineer Reviews and Ratings

based on 94 reviews

3.8/5

Rating in categories

3.4

Skill development

3.6

Work-life balance

4.0

Salary

3.7

Job security

3.6

Company culture

3.4

Promotions

3.3

Work satisfaction

Explore 94 Reviews and Ratings
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