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Qualcomm Interview Questions and Answers

Updated 30 Jul 2025
Popular Designations

296 Interview questions

An Engineer was asked 2w ago
Q. What is the procedure to reverse a linked list?
Ans. 

Reversing a linked list involves changing the direction of its pointers to reverse the order of nodes.

  • 1. Initialize three pointers: previous (prev), current (curr), and next.

  • 2. Set prev to null and curr to the head of the list.

  • 3. Iterate through the list: while curr is not null, do the following:

  • a. Store the next node: next = curr.next.

  • b. Reverse the current node's pointer: curr.next = prev.

  • c. Move prev a...

View all Engineer interview questions
An Engineer was asked 2w ago
Q. What is the process for replacing occurrences of 'a' with 'ab' in a string?
Ans. 

To replace 'a' with 'ab' in a string, iterate through the string and substitute each occurrence of 'a'.

  • Use a loop to traverse each character in the string.

  • Check if the character is 'a'.

  • If it is, append 'ab' to a new string; otherwise, append the character.

  • Example: 'cat' becomes 'cabt'.

  • Example: 'banana' becomes 'babnanab'.

View all Engineer interview questions
A Software Engineer was asked 2w ago
Q. Write a program to replace every occurrence of 'a' with 'ab' in a given string.
Ans. 

Replace every occurrence of 'a' with 'ab' in a given string, transforming it accordingly.

  • Use string replacement methods available in programming languages.

  • In Python, use: result = original_string.replace('a', 'ab').

  • In JavaScript, use: let result = originalString.replace(/a/g, 'ab');.

  • Consider edge cases, like strings without 'a' or with consecutive 'a's.

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A Senior Leader Engineer was asked 3w ago
Q. Is the hashbang mandatory in scripts? If omitted, what will happen?
Ans. 

The shebang (#!) indicates the script's interpreter; omitting it can lead to execution issues.

  • The shebang line specifies which interpreter to use (e.g., #!/bin/bash for Bash scripts).

  • Without a shebang, the script may not execute as intended, defaulting to the shell used to run it.

  • Example: A Python script without #!/usr/bin/env python3 may fail if run in a non-Python shell.

  • Using the shebang ensures portability acro...

View all Senior Leader Engineer interview questions

What people are saying about Qualcomm

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marvel98
Verified Icon
2w
works at
Genpact
Offer breakup received but not the offer letter officially!
Hi all, last week Friday I got the offer breakup from Qualcomm but since I okayed it immediately I haven't heard back from them with official offer letter. I am holding another lower package offer from TE Connectivity who wants me to join by another 2 weeks... But are calling me everyday to check the status of my early release. Qualcomm is okay if I join by Sept mid. So what should I do? Please guide.
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A Senior Leader Engineer was asked 3w ago
Q. What challenges have you faced when implementing features in scripts?
Ans. 

Implementing features through scripts can present various challenges, impacting efficiency and functionality.

  • Complexity of the script can lead to maintenance difficulties; for example, a long script with multiple functions can be hard to debug.

  • Integration issues with existing systems; for instance, a new feature script may not align with legacy code, causing conflicts.

  • Performance bottlenecks; a script that process...

View all Senior Leader Engineer interview questions
A Senior Leader Engineer was asked 3w ago
Q. How can scripts be enabled to run without user input?
Ans. 

Scripts can run without user input by using automation tools, scheduling, and background processes.

  • Use cron jobs in Unix/Linux to schedule scripts at specific intervals (e.g., `0 * * * * /path/to/script.sh`).

  • Implement Windows Task Scheduler to run scripts at defined times or events.

  • Utilize automation tools like Jenkins for continuous integration and deployment without manual triggers.

  • Leverage cloud services (e.g.,...

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Qualcomm HR Interview Questions

54 questions and answers

Q. Tell me about the projects you worked on in your previous company.
Q. Why did you leave your last role?
Q. What are the specific responsibilities associated with the role, and how do ... read more
A Senior Leader Engineer was asked 3w ago
Q. What are the key differences between sed and awk?
Ans. 

sed is a stream editor for filtering and transforming text, while awk is a programming language for pattern scanning and processing.

  • sed is primarily used for text substitution and manipulation, e.g., 'sed s/old/new/g file.txt'.

  • awk is designed for data extraction and reporting, e.g., 'awk '{print $1}' file.txt' to print the first column.

  • sed operates on a line-by-line basis, while awk processes data in fields and re...

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An IT Engineer was asked 1mo ago
Q. What is your experience in troubleshooting boot issues?
Ans. 

I have extensive experience troubleshooting boot issues across various operating systems and hardware configurations.

  • Identified and resolved BIOS misconfigurations preventing booting on a custom-built PC.

  • Used recovery tools to fix corrupted boot sectors on Windows systems.

  • Diagnosed hardware failures, such as faulty RAM, that caused boot loops.

  • Utilized safe mode to troubleshoot driver issues that hindered system st...

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A Technical Support Engineer was asked 1mo ago
Q. What are the different Wi-Fi generations and their characteristics?
Ans. 

Wi-Fi generations, from 802.11b to Wi-Fi 6E, have evolved in speed, range, and efficiency, enhancing wireless connectivity.

  • 802.11b (1999): Up to 11 Mbps, 2.4 GHz, good range but limited speed.

  • 802.11g (2003): Up to 54 Mbps, 2.4 GHz, backward compatible with 802.11b.

  • 802.11n (2009): Up to 600 Mbps, operates on 2.4 GHz and 5 GHz, MIMO technology for better performance.

  • 802.11ac (2013): Up to 3.5 Gbps, primarily 5 GHz, ...

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An Associate Software Engineer was asked 3mo ago
Q. Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree.
Ans. 

LCA (Lowest Common Ancestor) is the deepest node that is an ancestor of two given nodes in a tree structure.

  • LCA can be found using recursion or iterative methods.

  • In a binary tree, traverse from the root to find both nodes.

  • If one node is found in the left subtree and the other in the right, the current node is the LCA.

  • Example: In a tree with nodes 3, 5, and 1, the LCA of 5 and 1 is 3.

  • For binary search trees, if bot...

View all Associate Software Engineer interview questions

Qualcomm Interview Experiences

276 interviews found

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
No response

I appeared for an interview in Dec 2024.

Round 1 - One-on-one 

(2 Questions)

  • Q1. What can you share about your experience?
  • Ans. 

    I have over 5 years of experience as a Business Analyst in the finance industry.

    • Led cross-functional teams to analyze market trends and develop strategic plans

    • Performed data analysis to identify opportunities for cost reduction and revenue growth

    • Collaborated with stakeholders to gather requirements and create detailed business requirements documents

  • Answered by AI
  • Q2. What are the specific responsibilities associated with the role, and how does the workflow typically function?
  • Ans. 

    Business Analyst responsibilities include analyzing data, identifying trends, and making recommendations to improve business processes.

    • Gather and analyze data to identify trends and make recommendations

    • Work closely with stakeholders to understand business needs and requirements

    • Create reports and presentations to communicate findings and recommendations

    • Collaborate with cross-functional teams to implement solutions

    • Monito...

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. It was little technical with the Excel and Power Bi
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
4
Good
Difficulty level
Hard
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. What is Planning?
  • Ans. 

    Planning is the process of setting goals, determining actions to achieve those goals, and allocating resources effectively.

    • Setting specific, measurable, achievable, relevant, and time-bound (SMART) goals

    • Creating a detailed plan of action to achieve the goals

    • Allocating resources such as time, money, and manpower efficiently

    • Monitoring progress and making adjustments as needed

    • Examples: Financial planning for a company's b...

  • Answered by AI
  • Q2. What to build financial model?
  • Ans. 

    A financial model is built to forecast future financial performance of a company or project.

    • Identify the purpose of the financial model (e.g. budgeting, valuation, forecasting)

    • Gather historical financial data and relevant assumptions

    • Create income statement, balance sheet, and cash flow statement projections

    • Perform sensitivity analysis to assess the impact of different variables

    • Validate the model by comparing actual res...

  • Answered by AI
Round 2 - One-on-one 

(2 Questions)

  • Q1. What is depreciation?
  • Ans. 

    Depreciation is the allocation of the cost of a tangible asset over its useful life.

    • Depreciation is a non-cash expense that reduces the value of an asset over time.

    • It reflects the wear and tear, obsolescence, or decrease in value of an asset.

    • Common methods of calculating depreciation include straight-line, double declining balance, and units of production.

    • Example: A company purchases a machine for $10,000 with a useful...

  • Answered by AI
  • Q2. What is the concept of budgeting?
  • Ans. 

    Budgeting is the process of creating a plan to manage income and expenses over a specific period of time.

    • Budgeting involves setting financial goals and creating a detailed plan to achieve them.

    • It helps in tracking income, expenses, and savings to ensure financial stability.

    • Budgeting can be done on a personal level, for businesses, or for specific projects.

    • Examples of budgeting tools include spreadsheets, budgeting apps...

  • Answered by AI
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.

Interview Questions & Answers

user image Anonymous

posted on 30 Jul 2025

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

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

  • Q1. First round, asked about pointer to array, some modifications, then asked about memcpy and memove. some discussion on that. Second round: Asked about a dsa question on LinkedList, and then some modificatio...
  • Q2. Managerial Round: Asked standard questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Hiring freeze was told to me. Prepare basic os and dsa and c/c++ concepts, you'd be good to go
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Technical interview questions
  • Q2. Questions technical interview questions
Round 2 - One-on-one 

(2 Questions)

  • Q1. One on round questions
  • Q2. Questiobs one on round

Interview Preparation Tips

Interview preparation tips for other job seekers - seek job
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
  • Ans. 

    Insertion in a doubly linked list involves adding nodes with pointers to both previous and next nodes for bidirectional traversal.

    • A doubly linked list node contains three parts: data, a pointer to the next node, and a pointer to the previous node.

    • To insert at the beginning, adjust the head pointer and update the new node's next and previous pointers.

    • To insert at the end, traverse to the last node, update its next point...

  • Answered by AI
Round 3 - Behavioral 

(2 Questions)

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

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

Accountant Interview Questions & Answers

user image Anonymous

posted on 4 Dec 2024

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-

I applied via Company Website

Round 1 - One-on-one 

(1 Question)

  • Q1. Give an example of a customer dispute in making payment
  • Ans. 

    A customer disputed a payment due to incorrect billing for services rendered, leading to a resolution process.

    • Customer received an invoice for $1,000 but only expected to pay $800 based on prior agreement.

    • Dispute arose when the customer claimed they were charged for services not rendered.

    • Communication breakdown occurred; the customer felt their concerns were not addressed promptly.

    • Resolution involved reviewing service ...

  • Answered by AI
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

Qualcomm Interview FAQs

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

Some of the top questions asked at the Qualcomm 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
What are the most common questions asked in Qualcomm HR round?

The most common HR questions asked in Qualcomm interview are -

  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

4.1/5

based on 195 interview experiences

Difficulty level

Easy 14%
Moderate 74%
Hard 12%

Duration

Less than 2 weeks 63%
2-4 weeks 26%
4-6 weeks 7%
6-8 weeks 2%
More than 8 weeks 3%
View more

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Qualcomm Reviews and Ratings

based on 1.1k reviews

3.8/5

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3.5

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3.4

Work-life balance

4.0

Salary

3.6

Job security

3.5

Company culture

3.3

Promotions

3.4

Work satisfaction

Explore 1.1k Reviews and Ratings
Staff Engineer, CPU Software Test Engineer (Server)

Bangalore / Bengaluru

4-9 Yrs

Not Disclosed

CPU Physical Design Verification(PDV) Engineer, Staff

Bangalore / Bengaluru

8-13 Yrs

Not Disclosed

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