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Qualcomm System Engineer Interview Questions and Answers

Updated 2 Oct 2024

Qualcomm System Engineer Interview Experiences

4 interviews found

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Qualcomm Careers and was interviewed in Dec 2023. There were 4 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Managerial Introduction and alignment with the job role.
Round 2 - Technical 

(1 Question)

  • Q1. Technical Hardware Questions
Round 3 - Technical 

(1 Question)

  • Q1. Technical Software/Scripting Questions
Round 4 - HR 

(1 Question)

  • Q1. General HR discussions

Interview Preparation Tips

Interview preparation tips for other job seekers - Make sure you fit well with the requirements and have your fundamental understanding pretty strong. They will chain questions and keep going, make sure you have the thinking stamina to keep on going for 2 hours continuously.
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Qualcomm Careers and was interviewed in Dec 2023. There were 4 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Managerial Introduction and alignment with the job role.
Round 2 - Technical 

(1 Question)

  • Q1. Technical Hardware Questions
Round 3 - Technical 

(1 Question)

  • Q1. Technical Software/Scripting Questions
Round 4 - HR 

(1 Question)

  • Q1. General HR discussions

Interview Preparation Tips

Interview preparation tips for other job seekers - Make sure you fit well with the requirements and have your fundamental understanding pretty strong. They will chain questions and keep going, make sure you have the thinking stamina to keep on going for 2 hours continuously.

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Interview experience
4
Good
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Oct 2023. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. What will variance of sum of two iid random variables
  • Ans. 

    Variance of sum of two iid random variables is the sum of their individual variances.

    • Variance of sum of two iid random variables is the sum of their individual variances

    • If X and Y are iid random variables, Var(X+Y) = Var(X) + Var(Y)

    • For example, if X and Y are both dice rolls, Var(X+Y) = Var(X) + Var(Y) = 35/12

  • Answered by AI
  • Q2. Different type of fading channels in wireless system
  • Ans. 

    Different types of fading channels in wireless systems include Rayleigh fading, Rician fading, and Nakagami fading.

    • Rayleigh fading is when there is no line of sight between transmitter and receiver, resulting in random amplitude and phase variations.

    • Rician fading is a combination of a dominant line of sight signal and scattered signals, leading to a stronger signal with fading effects.

    • Nakagami fading models the wireles...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Go through deep study
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed before Oct 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - One-on-one 

(4 Questions)

  • Q1. 3-4 rounds of c and DSP questions.
  • Q2. Fourier transform
  • Q3. Digital filtering
  • Q4. C coding and basics

Interview Preparation Tips

Interview preparation tips for other job seekers - Have C and DSP concepts handy. some tricky coding and fundamentals are a necessity.

Qualcomm interview questions for designations

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 (1)

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 (1)

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 (2)

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 (37)

 Staff Engineer

 (4)

 Embedded Engineer

 (4)

 Lead Engineer

 (3)

 Test Engineer

 (3)

System Engineer Jobs at Qualcomm

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Interview questions from similar companies

Software Engineer Interview Questions & Answers

Intel user image Niranjhana Narayanan

posted on 4 Dec 2016

I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Why UDP and not TCP in project
  • Ans. 

    UDP is preferred over TCP in this project due to its low latency and lightweight nature.

    • UDP is a connectionless protocol, which means it does not establish a direct connection between the sender and receiver.

    • UDP is faster than TCP as it does not have the overhead of establishing and maintaining a connection.

    • UDP is suitable for applications where real-time data transmission is crucial, such as video streaming or online ...

  • Answered by AI
  • Q2. How would you clear the 7th bit in a 32 bit register
  • Ans. 

    To clear the 7th bit in a 32-bit register, perform a bitwise AND operation with a mask that has all bits set to 1 except the 7th bit.

    • Create a mask with the 7th bit set to 0 and all other bits set to 1

    • Perform a bitwise AND operation between the register and the mask

    • Store the result back in the register

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Questions were based on C concepts, given piece of code, find error, output, etc then data structures, bit manipulation, a few aptitude questions were also there (around 5-7).
Tips: Practice aptitude, C, data structures (geeksforgeeks.org is a good source).
Duration: 1 hour
Total Questions: 30

Round: Technical + HR Interview
Experience: I was asked to explain project in detail, I had done projects on embedded, so was asked about that, details like what fields did you use in that structure, why this implementation and not some related other. Memory management, network communications, operating systems. Then questions on C concepts like memory allocation, function pointers, then data structures like linked lists, then bit manipulation in registers. Questions from electrical coursework. Then later, why higher studies, would you still go for higher studies if you had a good job at a company, why etc.
Tips: Be thorough with C (know your Kernighan & Ritchie) and be prepared to go into details about your projects.

Skills: C, Data Structures, Coursework Understanding, Project And Internship
College Name: IIT Madras

Skills evaluated in this interview

Interview Preparation Tips

Round: Technical Interview
Experience: questions were mainly asked on C, data structures linked lists, wireless communications. i was asked questions on pointers, linked lists, difference between structures and unions, endien-ness(big or little)
about microprocesors- interrupt scheme: which scheme is better , when?
about assembly programming.
They may ask you to write assembly codes/C program
emphasis is on the logic used and not so much on the syntax.

Tips: do C really well. they ask you about projects. also do communication subjects, microprocessors.
they prefer if you know about data structures and OS but it's okay even if you don't.
be honest. if you don't know something say you don't.
do your final year project well.

College Name: Veermata Jijabai Technological Institute, Mumbai [ VJTI ]

I applied via Campus Placement and was interviewed in Dec 2016. There was 1 interview round.

Interview Questionnaire 

7 Questions

  • Q1. Phases of compiler
  • Ans. 

    Phases of compiler include lexical analysis, syntax analysis, semantic analysis, code generation, and optimization.

    • Lexical analysis: breaking down input into tokens

    • Syntax analysis: checking if tokens form valid syntax

    • Semantic analysis: checking if syntax is semantically correct

    • Code generation: generating machine code from input

    • Optimization: improving generated code performance

  • Answered by AI
  • Q2. Compiler optimisations
  • Q3. Why to c over cpp
  • Ans. 

    C is preferred over C++ for certain applications due to its simplicity and efficiency.

    • C is a simpler language compared to C++ and has a smaller runtime footprint.

    • C is often used for low-level programming, embedded systems, and operating systems.

    • C allows for more control over memory management and can be faster in certain scenarios.

    • C++ introduces additional features like object-oriented programming and templates, which

  • Answered by AI
  • Q4. Classes and structure and memory allocation for them
  • Ans. 

    Classes are blueprints for creating objects, while structures are similar but with different default access levels.

    • Classes and structures are used to define the structure and behavior of objects in object-oriented programming.

    • Classes are reference types and are allocated on the heap, while structures are value types and are allocated on the stack.

    • Memory allocation for classes is managed by garbage collection, while mem...

  • Answered by AI
  • Q5. My research area
  • Q6. My professional experience
  • Q7. Knowledge in cpp, c and debugging

Interview Preparation Tips

Round: Technical Interview
Experience: Asked about, basic cpp, c. compiler optimisations and phases, lex and yacc. why and how compiler optimisations help.
Tips: Its good.

Round: Technical Interview
Experience: How good am i in c, cpp. My research area.
Tips: Question where not clear to me. when asked how good are you in cpp, in debugging, in firmware I was not able to understand what the interviewer was looking for.

College Name: IIT Madras

Skills evaluated in this interview

Software Engineer Interview Questions & Answers

Intel user image ESHAN SHEKHAR cs15m018

posted on 2 Dec 2016

I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Given a blackbox with arithmetic circuits , design the logical circuits
  • Ans. 

    Design logical circuits for arithmetic circuits in a blackbox.

    • Understand the functionality of the arithmetic circuits in the blackbox.

    • Identify the inputs and outputs of the blackbox.

    • Design logical circuits using logic gates to replicate the arithmetic operations.

    • Test the logical circuits to ensure they produce the same outputs as the arithmetic circuits.

  • Answered by AI
  • Q2. Embedded c-code for recursion
  • Ans. 

    Recursion in embedded C-code allows a function to call itself, useful for repetitive tasks or complex algorithms.

    • Ensure proper base case to avoid infinite recursion

    • Use stack space efficiently as embedded systems have limited resources

    • Avoid recursive functions with deep call stacks to prevent stack overflow

    • Example: Recursive function to calculate factorial of a number

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: During this round we had some technical questions and some digital logic questions.
Tips: Please be patient.Interviewers do stress testing. Don't panic even if you don't know any answers.
Duration: 2 hours
Total Questions: 1

Round: Technical Interview
Experience: He asked me questions regarding my project and some coding questions
Tips: Please be patient.Interviewers do stress testing. Don't panic even if you don't know any answers.

Round: Technical + HR Interview
Experience: He asked me questions regarding my project and some coding questions
Tips: Please be patient.Interviewers do stress testing. Don't panic even if you don't know any answers.

College Name: IIT Madras

Skills evaluated in this interview

Software Engineer Interview Questions & Answers

Intel user image Niranjhana Narayanan

posted on 2 Dec 2016

I applied via Campus Placement and was interviewed in Dec 2016. There were 4 interview rounds.

Interview Preparation Tips

Round: Test
Experience: Questions were based on C concepts, given piece of code, find error, output,etc then data structures, bit manipulation, a few aptitude questions were also there (around 5-7).
Duration: 1 hour
Total Questions: 30

Round: Technical + HR Interview
Experience: I was asked to explain project in detail, I had done projects on embedded, so was asked what fields did you use in that structure, why this implementation and not some related other. Then questions on C concepts, memory allocation, function pointers, data structures, linked lists, then bit manipulation in registers. Then later, why higher studies, would you still go for higher studies if you had a good job at a company, why etc.
Tips: Just be thorough with C (Know your Kernighan Ritchie) and be prepared to go into details about your projects.

College Name: IIT Madras

I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Tell me about your self
  • Ans. 

    I am a passionate software engineer with experience in developing web applications using various technologies.

    • Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

    • Proficient in backend development with Node.js and databases like MongoDB and MySQL

    • Familiar with version control systems like Git and project management tools like Jira

  • Answered by AI
  • Q2. Questions on gen data structures and basic electrical questions Regards software - Dsa,computer organization,computer networks

Interview Preparation Tips

Round: Test
Experience: I was gen basic analytics questions
Tips: No needforany serious preperation,just be yourself
Duration: 45 minutes
Total Questions: 25

Round: Technical + HR Interview
Experience: I got trough most of dsa and computer network questions but i was notso strong in digital part so i cupped
Tips: Just know the basics of all the areas you are interested in.

Round: HR Interview
Experience: This is the basic question expected i have gone through my family childhood experiences and hobies
Tips: Every person have a unique style of expressing themselves ,so prepare for these kind of questions,dont rise any interest in higher studies

College Name: IIT Madras
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Qualcomm Interview FAQs

How many rounds are there in Qualcomm System Engineer 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 HR.
How to prepare for Qualcomm System 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 Linux, SOC, Automotive, Python and C++.
What are the top questions asked in Qualcomm System Engineer interview?

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

  1. What will variance of sum of two iid random variab...read more
  2. Different type of fading channels in wireless sys...read more
  3. 3-4 rounds of c and DSP questio...read more

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Qualcomm System Engineer Interview Process

based on 4 interviews

Interview experience

4.8
  
Excellent
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Qualcomm System Engineer Salary
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₹9.4 L/yr - ₹33.4 L/yr
257% more than the average System Engineer Salary in India
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based on 6 reviews

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3.0

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4.5

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4.2

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