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Qualcomm Interview Questions, Process, and Tips

Updated 6 Mar 2025

Top Qualcomm Interview Questions and Answers

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Hardware Engineer Interview Questions & Answers

user image Aashrith Vennelakanti

posted on 18 Sep 2017

I was interviewed in Sep 2017.

Interview Questionnaire 

8 Questions

  • Q1. How do you implement the overlap-add method of convolution?
  • Ans. 

    Overlap-add method of convolution is implemented by dividing the input signal into overlapping segments and convolving each segment with a filter.

    • Divide the input signal into overlapping segments

    • Apply the filter to each segment

    • Add the convolved segments together to get the output signal

    • The length of each segment should be greater than or equal to the length of the filter

    • The overlap between adjacent segments should be g...

  • Answered by AI
  • Q2. Obtain the Nyquist criterion.
  • Ans. 

    The Nyquist criterion states that in order to accurately sample a signal, the sampling rate must be at least twice the highest frequency component of the signal.

    • The Nyquist criterion is used in digital signal processing and communication systems.

    • It ensures that the original signal can be accurately reconstructed from its samples.

    • The sampling rate should be at least twice the bandwidth of the signal to avoid aliasing.

    • Fo...

  • Answered by AI
  • Q3. Obtain the Nyquist sampling frequency for an unevenly distributed band-limited signal.
  • Ans. 

    Nyquist sampling frequency for unevenly distributed band-limited signal.

    • Determine the highest frequency component in the signal

    • Use Nyquist theorem to calculate the minimum sampling frequency

    • Sampling frequency should be at least twice the highest frequency component

  • Answered by AI
  • Q4. How do you implement interpolation in discrete-time domain?
  • Ans. 

    Interpolation in discrete-time domain involves estimating values between known data points.

    • Interpolation is used to fill in missing data or estimate values between known data points.

    • Common interpolation techniques include linear interpolation, polynomial interpolation, and spline interpolation.

    • Linear interpolation calculates values along a straight line between two known data points.

    • Polynomial interpolation uses a poly...

  • Answered by AI
  • Q5. How do you obtain the in-phase and quadrature components of a real pass-band signal?
  • Ans. 

    The in-phase and quadrature components of a real pass-band signal can be obtained using a complex mixer.

    • A complex mixer is used to convert the real pass-band signal to a complex baseband signal.

    • The in-phase component is obtained by multiplying the pass-band signal with a local oscillator signal in-phase with the carrier frequency.

    • The quadrature component is obtained by multiplying the pass-band signal with a local osci...

  • Answered by AI
  • Q6. How many ways would one arrange sets of coloured balls, the first set all red, the next all blue, and the last all green, and all balls in a set are identical, in a line?
  • Ans. 

    The number of ways to arrange sets of coloured balls in a line.

    • The number of ways to arrange the red balls is the factorial of the number of red balls.

    • The number of ways to arrange the blue balls is the factorial of the number of blue balls.

    • The number of ways to arrange the green balls is the factorial of the number of green balls.

    • To find the total number of arrangements, multiply the number of arrangements for each se

  • Answered by AI
  • Q7. How do you obtain the bit-rate for quantization of a band-limited signal?
  • Ans. 

    The bit-rate for quantization of a band-limited signal can be obtained by considering the Nyquist-Shannon sampling theorem.

    • The Nyquist-Shannon sampling theorem states that in order to accurately represent a band-limited signal, the sampling rate must be at least twice the highest frequency component of the signal.

    • The bit-rate for quantization is determined by the number of bits used to represent each sample. It is typi...

  • Answered by AI
  • Q8. If you were offered an intern in Communications in Hyderabad, would you take it?
  • Ans. 

    Yes, I would take the intern in Communications in Hyderabad.

    • Taking the intern in Communications in Hyderabad would provide me with valuable experience in a different field.

    • It would allow me to expand my skill set and network in a new location.

    • Internships are great opportunities for learning and growth, regardless of the specific field.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Each section had 20 multiple choice questions and each section was allotted 30 minutes. The aptitude section was fairly difficult due to time constraints. The other two sections had several questions with unfamiliar concepts; however the other questions were easy.
Tips: Practice aptitude questions to increase speed in problem-solving.
Duration: 1 hour 30 minutes
Total Questions: 60

Round: Technical Interview
Experience: The first round was fairly short. The interviewer asked only three questions and I was able to answer all except for the overlap-add question. However I had the intuition to get to part of the answer.
Tips: Just brush up concepts in analog communications and DSP.

Round: Technical Interview
Experience: The second round was longer. The interviewer asked questions mostly in DSP and analog communications. I was able to answer all but one, which involved interpolation in discrete-time domain. The interviewer gave hints on how to get to the solution of the bit-rate and the interpolation question but I was able to answer only the former. The interviewer also asked if I did a course on Linear Algebra, and I affirmed it but I had no memory of it.
Tips: Just like in the first round, but expect more difficult questions.

Round: HR Interview
Experience: The HR interview was very short and the interviewer did not ask any of the typical HR questions except for if I were offered an internship in Communications, I would take it.
Tips: If you make it this far, you'll most likely make it. There is no need to prepare anything in advance.

College Name: IIT Madras

Top Qualcomm Hardware Engineer Interview Questions and Answers

Q1. How many ways would one arrange sets of coloured balls, the first set all red, the next all blue, and the last all green, and all balls in a set are identical, in a line?
View answer (2)

Hardware Engineer Interview Questions asked at other Companies

Q1. How many ways would one arrange sets of coloured balls, the first set all red, the next all blue, and the last all green, and all balls in a set are identical, in a line?
View answer (2)
Interview experience
1
Bad
Difficulty level
Easy
Process Duration
More than 8 weeks
Result
No response

I was interviewed 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.

Project Analyst Interview Questions asked at other Companies

Q1. What is Samarth about?
View answer (2)
Qualcomm Interview Questions and Answers for Freshers
illustration image
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
No response

I was interviewed 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

Business Analyst Interview Questions asked at other Companies

Q1. You have 10 boxes of balls (each ball weighing exactly10 gm) with one box with defective balls (each one of the defective balls weigh 9 gm). You are given an electronic weighing machine and only one chance at it. How will you find out which... read more
View answer (9)
Interview experience
4
Good
Difficulty level
Hard
Process Duration
-
Result
No response

I was interviewed 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

Senior Devops Engineer Interview Questions asked at other Companies

Q1. What are Terraform life cycles ? and how do we use them ?
View answer (3)

Qualcomm interview questions for popular designations

 Software Engineer

 (37)

 Associate Engineer

 (24)

 Engineer

 (19)

 Senior Engineer

 (15)

 Software Developer

 (11)

 Hardware Engineer

 (11)

 Senior Software Engineer

 (7)

 Intern

 (5)

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

Financial Analyst Interview Questions asked at other Companies

Q1. Suppose you have 10000 US dollars with you, out of which you took a loan of 5000 US Dollars. Now suppose you have purchased two assets of 5000 US Dollars each, one through cash and other through bank loan. How would you show this transactio... read more
View answer (3)

Get interview-ready with Top Qualcomm Interview Questions

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

PCB Design Engineer Interview Questions asked at other Companies

Q1. how to calculate trace width? if u have 15A current then what is your trace width?
View answer (2)

Jobs at Qualcomm

View all
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.

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 it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (197)

Software Engineer Interview Questions asked at other Companies

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 used when crossing the bridge. Person... read more
View answer (196)

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
  • 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

Top Qualcomm Engineer Interview Questions and Answers

Q1. What is Min-Cut placement algorithm? Given some block sizes, use the algorithm to place them on a given chip area
View answer (1)

Engineer Interview Questions asked at other Companies

Q1. ❖ If a team member is unable to carry out his work, he is doing it repetitively, how would you handle it?, would you like to work only on lifing of components, or would you be ready to shift to other departments?
View answer (7)
Interview experience
4
Good
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Selected Selected

I was interviewed before Mar 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. Pointer related questions.
  • Q2. Basic puzzles
Round 2 - Coding Test 

Some question on memory management and some puzzles.

Round 3 - Coding Test 

Problems related to pointer like in this scenario what should be the output etc.

Senior Software Engineer Interview Questions asked at other Companies

Q1. K Largest Elements Problem Statement You are given an integer k and an array of integers that contain numbers in random order. Write a program to find the k largest numbers from the given array. You need to save them in an array and return ... read more
View answer (1)

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

Accountant Interview Questions asked at other Companies

Q1. What journal is made when purchase requisition is created
View answer (25)
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

Senior Software Engineer Interview Questions asked at other Companies

Q1. K Largest Elements Problem Statement You are given an integer k and an array of integers that contain numbers in random order. Write a program to find the k largest numbers from the given array. You need to save them in an array and return ... read more
View answer (1)
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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 Staffing, Python, Computer science, C++ 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. How many ways would one arrange sets of coloured balls, the first set all red, ...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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based on 173 interviews

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