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Qualcomm Interview Questions and Answers for Experienced

Updated 7 Jul 2025
Popular Designations

42 Interview questions

An Engineer was asked 11mo ago
Q. Given a string, reverse the order of words.
Ans. 

Reverse words in a given string

  • Split the string into words using a space as delimiter

  • Reverse each word individually

  • Join the reversed words back together with a space in between

View all Engineer interview questions
An Engineer was asked 11mo ago
Q. Write a function to multiply two dynamic 2D arrays.
Ans. 

Dynamic 2D array multiplication involves multiplying two matrices of varying sizes using dynamic memory allocation.

  • Define two 2D arrays (matrices) dynamically using pointers.

  • Ensure the number of columns in the first matrix equals the number of rows in the second.

  • Allocate memory for the result matrix based on the dimensions of the input matrices.

  • Use nested loops to perform the multiplication: for each element in th...

View all Engineer interview questions
An Embedded Software Engineer was asked
Q. Explain the basic structure of a C program.
Ans. 

A basic C program typically includes headers, main function, and can perform simple tasks like printing output.

  • C programs start with #include directives for libraries, e.g., #include <stdio.h>.

  • The main function is the entry point: int main() { /* code */ return 0; }.

  • Use printf() to display output: printf('Hello, World!');.

  • Variables must be declared before use: int a = 5;.

  • Control structures like if, for, and ...

View all Embedded Software Engineer interview questions
A Senior Software Engineer was asked
Q. How would you integrate/embed a Unity application into Android?
Ans. 

Integrating Unity application into Android involves exporting the Unity project as an Android project and then integrating it with Android Studio.

  • Export the Unity project as an Android project

  • Import the project into Android Studio

  • Modify the Android manifest file to include necessary permissions and settings

  • Integrate UnityPlayerActivity into the Android application

  • Build and run the Android application on a device o...

View all Senior Software Engineer interview questions

What people are saying about Qualcomm

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marvel98
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Qualcomm offer disappointment
I am holding an offer of 20.59 fixed(21.7lpa as total CTC) from TE Connectivity. But they are asking me to join by Aug 18, which I cannot. Hence I interviewed with Qualcomm for Program Analyst- Data Analyst role. After clearing all the rounds, Qualcomm HR is saying that he might not be even able to match TE's fixed pay..because the band won't allow it. But would able to offer RSUs worth 10K USD+ joining bonus of 2lakh. What to do? How do I convince him to get it upto atleast 21lpa as fixed, because I had interviewed for 7 hours.
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A Senior Software Engineer was asked
Q. Move the 4 cubes from the middle of the screen to the left, right, bottom, and top. The cubes should keep rotating and stop rotating once they reach their destination.
Ans. 

Move rotating cubes to different positions on screen and stop rotation once reached.

  • Create 4 animations to move each cube to left, right, bottom, and top of the screen

  • Add rotation animation to each cube

  • Stop rotation animation once cube reaches the desired position

View all Senior Software Engineer interview questions
A Senior Engineer was asked
Q. Given the head of a linked list, detect if the linked list has a cycle (loop) and remove it. Return the head of the modified linked list.
Ans. 

To detect and remove a loop in a linked list, we can use Floyd's Cycle Detection Algorithm.

  • Use two pointers, slow and fast, to traverse the linked list

  • If there is a loop, the fast pointer will eventually meet the slow pointer

  • Once the loop is detected, reset one of the pointers to the head and move both pointers at the same pace until they meet again to find the start of the loop

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A Senior Engineer was asked
Q. Explain the usage of static const with an example.
Ans. 

static const is used to declare constants that are known at compile time and cannot be modified

  • static const int MAX_SIZE = 100; // declaring a constant integer

  • static const double PI = 3.14159; // declaring a constant double

  • static const char* MESSAGE = "Hello, World!"; // declaring a constant string

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A Senior Engineer was asked
Q. Write a program to find the length of bits assigned in memory using recursion.
Ans. 

Program to find length of bits assigned in memory using recursion.

  • Define a recursive function to count the bits in memory

  • Base case: if input is 0, return 0

  • Recursive case: return 1 + function(input / 2)

View all Senior Engineer interview questions
A Senior Engineer was asked
Q. Design a data structure that accepts 0 or 1 as input, traverses a linked list based on the input, and returns the decimal equivalent of the traversed data.
Ans. 

Traverse a linked list based on input 0 or 1 to return decimal equivalent.

  • Create a function that takes input 0 or 1 and traverses the linked list accordingly.

  • For each node in the linked list, multiply the current decimal value by 2 and add the data of the node if input is 1.

  • Return the final decimal value after traversing the linked list.

View all Senior Engineer interview questions
A Senior Engineer was asked
Q. Write mock code to initialize GPIO using HAL functions, and write a function to set and clear GPIO status.
Ans. 

Initialize and control GPIO using HAL functions in embedded systems.

  • Use HAL_GPIO_Init() function to initialize GPIO pins

  • Use HAL_GPIO_WritePin() function to set or clear GPIO status

  • Example: HAL_GPIO_Init(&GPIO_InitStruct)

  • Example: HAL_GPIO_WritePin(GPIOx, GPIO_PIN_x, GPIO_PIN_SET)

View all Senior Engineer interview questions

Qualcomm Interview Experiences for Experienced

66 interviews found

Interview experience
4
Good
Difficulty level
Hard
Process Duration
-
Result
No response

I appeared for an interview in Dec 2024.

Round 1 - One-on-one 

(3 Questions)

  • Q1. Mostly related to docker networking concept.
  • Q2. How linux boot process work?
  • Ans. 

    Linux boot process involves several stages including BIOS, bootloader, kernel initialization, and user space initialization.

    • BIOS (Basic Input/Output System) performs hardware initialization and loads bootloader

    • Bootloader (GRUB, LILO) loads the Linux kernel into memory and starts it

    • Kernel initializes devices, mounts the root filesystem, and starts the init process

    • Init process (systemd, SysVinit) starts user space proces...

  • Answered by AI
  • Q3. Git, merge abd rebase cherry-pick etc

Interview Preparation Tips

Interview preparation tips for other job seekers - overall interview was good
i was interviewed for devops roles
Interview experience
1
Bad
Difficulty level
Easy
Process Duration
More than 8 weeks
Result
No response

I appeared for an interview in Sep 2024.

Round 1 - Technical 

(1 Question)

  • Q1. Project experience, admin questions, scenario based questions in admin, apex and in general tech questions Tableau, excel etc
Round 2 - Technical 

(1 Question)

  • Q1. Overall project experience and cross questioning on my candidature
Round 3 - Technical 

(1 Question)

  • Q1. Integration with Salesforce questions
Round 4 - Technical 

(1 Question)

  • Q1. Reports and dashboards, sprint management questions
Round 5 - Technical 

(1 Question)

  • Q1. Apex and Salesforce admin questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Don't expect much from them, the organization's hiring process itself is ridiculous.

Engineer Interview Questions & Answers

user image Anonymous

posted on 13 Aug 2024

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

(2 Questions)

  • Q1. Bitwise questions easy to medium
  • Q2. Merge two sorter linked list
  • Ans. 

    Merge two sorted linked lists into a single sorted linked list

    • Create a new linked list to store the merged result

    • Iterate through both input linked lists and compare nodes to determine the order in which they should be merged

    • Update the next pointers of the nodes in the new linked list accordingly

  • Answered by AI
Round 2 - Technical 

(2 Questions)

  • Q1. Inter process communication theory
  • Q2. Reverse words in String
  • Ans. 

    Reverse words in a given string

    • Split the string into words using a space as delimiter

    • Reverse each word individually

    • Join the reversed words back together with a space in between

  • Answered by AI
Round 3 - Technical 

(4 Questions)

  • Q1. Linux Module development
  • Q2. Dynamic 2d array multiplication
  • Ans. 

    Dynamic 2D array multiplication involves multiplying two matrices of varying sizes using dynamic memory allocation.

    • Define two 2D arrays (matrices) dynamically using pointers.

    • Ensure the number of columns in the first matrix equals the number of rows in the second.

    • Allocate memory for the result matrix based on the dimensions of the input matrices.

    • Use nested loops to perform the multiplication: for each element in the res...

  • Answered by AI
  • Q3. Why this role ?
  • Ans. 

    I am passionate about solving complex engineering problems and contributing to innovative projects.

    • I have always been fascinated by the intersection of technology and creativity

    • I thrive in fast-paced environments where I can apply my technical skills

    • I am excited about the opportunity to work with a talented team and make a real impact

  • Answered by AI
  • Q4. Why linux kernel ? And About how to compile linux kernel?
  • Ans. 

    Linux kernel is popular for its open-source nature, stability, security, and flexibility. Compiling it allows customization and optimization.

    • Linux kernel is widely used due to its open-source nature, allowing for customization and collaboration.

    • It is known for its stability, security, and flexibility, making it a preferred choice for many developers and organizations.

    • Compiling the Linux kernel involves configuring the ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prep OS.
Prep Embedded Linux.
Prep Bitwise and Linked list Problems. (easy to medium)
Prep Array and String w.r.t to dynamic memory allocation.
Prep Pointer Arithmetic.

Skills evaluated in this interview

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

(2 Questions)

  • Q1. Invert bits of a number
  • Ans. 

    Invert the bits of a given number

    • Use bitwise XOR operator (^) with 1 to flip each bit

    • Repeat the process for all bits in the number

    • Return the inverted number

  • Answered by AI
  • Q2. How do you support backward compatibility whiel designing a system
  • Ans. 

    Backward compatibility can be supported by using versioning, deprecation strategies, and maintaining clear communication with users.

    • Use versioning to clearly distinguish between different versions of the system

    • Implement deprecation strategies to phase out old features gradually

    • Maintain clear communication with users about upcoming changes and provide migration paths

    • Consider using compatibility layers or adapters to bri...

  • Answered by AI

Skills evaluated in this interview

IT Program Manager Interview Questions & Answers

user image Pragnya Jayashree

posted on 19 Apr 2025

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

I appeared for an interview in Mar 2025, where I was asked the following questions.

  • Q1. Why did you leave your last role
  • Ans. 

    I left my last role to pursue new challenges and opportunities for growth in a dynamic environment.

    • I was seeking a role that aligned more closely with my career goals and aspirations.

    • The company was undergoing significant restructuring, which led to uncertainty about future projects.

    • I wanted to work in a more innovative environment where I could leverage my skills in IT program management.

    • I had the opportunity to lead ...

  • Answered by AI
  • Q2. What id you do in your last project with a specific client. was it technical hands on or not
  • Q3. Are you hands on in python
  • Ans. 

    Yes, I am hands-on in Python, utilizing it for automation, data analysis, and developing applications.

    • Developed automation scripts using Python to streamline data processing tasks, reducing manual effort by 30%.

    • Utilized Python libraries like Pandas and NumPy for data analysis, enabling better decision-making through insights.

    • Created RESTful APIs with Flask to support application integration, enhancing system interopera...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Know your profile to answer the details in it
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Codes. 3D convolution using 5x5x5 matrix

Round 2 - One-on-one 

(2 Questions)

  • Q1. Questions was on image processing like color domains, histograms, canny edge detector etc
  • Q2. Deep learning questions about CNN networks
Round 3 - One-on-one 

(2 Questions)

  • Q1. Os related questions
  • Q2. Time complexity related questions
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 in Apr 2024. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Move the 4 cubes from middle of the screen to left, right, bottom and top. Also, it should keep rotating and stop rotation once it reaches there.
  • Ans. 

    Move rotating cubes to different positions on screen and stop rotation once reached.

    • Create 4 animations to move each cube to left, right, bottom, and top of the screen

    • Add rotation animation to each cube

    • Stop rotation animation once cube reaches the desired position

  • Answered by AI
  • Q2. 2 logical questions where asked.
Round 2 - Technical 

(2 Questions)

  • Q1. How would I integrate/embed Unity application into Android.
  • Ans. 

    Integrating Unity application into Android involves exporting the Unity project as an Android project and then integrating it with Android Studio.

    • Export the Unity project as an Android project

    • Import the project into Android Studio

    • Modify the Android manifest file to include necessary permissions and settings

    • Integrate UnityPlayerActivity into the Android application

    • Build and run the Android application on a device or emu...

  • Answered by AI
  • Q2. Interviewer checked my debugging skills

Skills evaluated in this interview

Interview experience
1
Bad
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I appeared for an interview in Mar 2025, where I was asked the following questions.

  • Q1. What does VLSI stand for?
  • Ans. 

    VLSI stands for Very Large Scale Integration, a technology used to create integrated circuits by combining thousands of transistors.

    • VLSI technology allows for the integration of millions of transistors on a single chip.

    • Common applications include microprocessors, memory chips, and digital signal processors.

    • Examples of VLSI devices are CPUs like Intel's Core series and GPUs like NVIDIA's GeForce series.

    • VLSI design invol...

  • Answered by AI
  • Q2. What does HTML mean?
  • Ans. 

    HTML stands for HyperText Markup Language, the standard language for creating web pages and web applications.

    • HTML is used to structure content on the web.

    • It consists of elements represented by tags, e.g., <p> for paragraphs.

    • HTML can embed images, videos, and links, enhancing user experience.

    • HTML5 introduced new features like audio, video, and semantic elements.

  • Answered by AI
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via LinkedIn and was interviewed in Jul 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. DSA,bitwise operations
  • Q2. Gpu architecture

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare DSA,Bitwise operators, Parallel programming, Gpu architecture

QA Engineer Interview Questions & Answers

user image Aisshwarya Tagginmni

posted on 26 May 2025

Interview experience
3
Average
Difficulty level
-
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview in Apr 2025, where I was asked the following questions.

  • Q1. Methods of cycle
  • Q2. Testing questiona

Qualcomm Interview FAQs

How many rounds are there in Qualcomm interview for experienced candidates?
Qualcomm interview process for experienced candidates usually has 2-3 rounds. The most common rounds in the Qualcomm interview process for experienced candidates are Technical, One-on-one Round and Coding Test.
How to prepare for Qualcomm interview for experienced candidates?
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, C++, Staffing, Computer science and Debugging.
What are the top questions asked in Qualcomm interview for experienced candidates?

Some of the top questions asked at the Qualcomm interview for experienced candidates -

  1. Function to write data to some memory location which can dynamically allocate m...read more
  2. Volatile usage w.r.t to gpio initialization, how volatile can help in overwriti...read more
  3. Structure which can take input as 0 or 1 , based on the input traverse the link...read more
What are the most common questions asked in Qualcomm HR round for experienced candidates?

The most common HR questions asked in Qualcomm interview are for experienced candidates -

  1. Why are you looking for a chan...read more
  2. What is your family backgrou...read more
  3. What are your strengths and weakness...read more
How long is the Qualcomm interview process?

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

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Overall Interview Experience Rating

4/5

based on 53 interview experiences

Difficulty level

Easy 8%
Moderate 78%
Hard 14%

Duration

Less than 2 weeks 59%
2-4 weeks 31%
4-6 weeks 6%
More than 8 weeks 3%
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3.8/5

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3.4

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3.6

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3.3

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