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Qualcomm Staff Engineer Interview Questions and Answers

Updated 11 Nov 2024

Qualcomm Staff Engineer Interview Experiences

4 interviews found

Staff Engineer Interview Questions & Answers

user image sachinkumar butte

posted on 20 Jun 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(1 Question)

  • Q1. C coding round. Reverse the linked list, bit manipulation.
Round 2 - One-on-one 

(2 Questions)

  • Q1. Regarding projects. Windows device driver architecture
  • Q2. KMDF and WDF driver
Round 3 - One-on-one 

(1 Question)

  • Q1. Managerial round questions
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Oct 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Coding round coding round coding round

Round 2 - HR 

(2 Questions)

  • Q1. How are you doing
  • Q2. What is your name

Staff Engineer Interview Questions Asked at Other Companies

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Q3. Minimum Jumps Problem Statement Bob and his wife are in the famou ... read more
Q4. Level Order Traversal of Binary Tree Given a Binary Tree of integ ... read more
asked in Nagarro
Q5. How to write HTML code considering web accessibility for disabled ... read more
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. How do you clock domain cross a signal where source and destination clock can are in the ratio 1:1 , 1:2, 2:1. Same circuit should work for all three.
  • Ans. 

    To clock domain cross a signal with different clock ratios, use a synchronizer circuit with multiple stages.

    • Implement a synchronizer circuit with multiple flip-flops to synchronize the signal between different clock domains.

    • Use a gray code or other encoding techniques to handle the different clock ratios.

    • Ensure proper setup and hold times are met for reliable data transfer.

    • Consider using FIFOs or handshaking protocols ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Good technical depth needed.
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Feb 2023. There were 2 interview rounds.

Round 1 - Group Discussion 

PMIC Charger Validation and integration

Round 2 - One-on-one 

(2 Questions)

  • Q1. Tell me about your work experience
  • Q2. Deep dive on Buck converter

Qualcomm interview questions for designations

 Senior Staff Engineer

 (1)

 Member Technical Staff

 (1)

 Software Engineer

 (37)

 System Engineer

 (4)

 Embedded Engineer

 (4)

 Lead Engineer

 (3)

 Test Engineer

 (3)

 Verification Engineer

 (1)

Staff Engineer Jobs at Qualcomm

View all

Interview questions from similar companies

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 ]

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

I was interviewed before May 2016.

Interview Preparation Tips

Round: written test
Experience: it was elitmus test conducted by the company itself on campus. As per my knowledge only those scoring 90 percentile got selected for round 2.
Tips: Attempt only those ques that are necessary for scoring 90+ in e litmus. Specially in verbal don't attempt more then required questions, though you might be tempted. The aim is not to score max bt to score 90+

Round: Technical Interview
Experience: This was a programming based round. I was asked to write algorithms for various array linked list based problems. There was cross questioning prompting to reduce complexity and to use different data structures for same problems.

Mostly it focused on subjects like c, data structures and ADA.
Tips: Be clear with basic of data structures and algorithms. Pointers, queue, stacks, array linked lists, sorting etc are the keywords.

Round: Technical Interview
Experience: This was a information security specific round since that was my major. In depth cross questioning on my thesis topics, honeypots, network intrusion etc. Security certificates, and on the go problems to provide security solution layer wise in different scenarios. Security concept of torrents was also asked in detail.
Tips: It was more of a security discussion and throwing of ideas about how things in a particular case could work or could not. Don't worry about right or wrong answer just be clear with your reasoning about the solution you are suggesting.

Round: Other Interview
Experience: I don't know what to name this round, but it focused mainly on developing test cases for an object. Say they gave me a stapler and said to develop a test plan listing down test cases for a given object to pass so that it can be confirmed that it is a stapler. Another scenario was with a lift.
Tips: This is one round where your presence of mind and inter personal skills matter. I think the way you present your thoughts was most important here.

Round: Behavioural Interview
Experience: This was was mostly about how would you react in a given professional situation
Like your assigned work could not be completed on time, or if you are doing something wrong with the work assigned.
Tips: This is all about inter personal skills and putting your best foot forward :)

College Name: Indira Gandhi Delhi Technical University For Women, Delhi

I was interviewed before Apr 2021.

Round 1 - Face to Face 

(7 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions on OOPS and OS mainly.

  • Q1. What are Little Endian and Big Endian in the context of computer architecture?
  • Ans. 

    Little Endian and Big Endian refer to the order in which bytes are stored in computer memory.

    • Little Endian stores the least significant byte first, while Big Endian stores the most significant byte first.

    • Little Endian is commonly used in x86 architecture, while Big Endian is used in architectures like SPARC and PowerPC.

    • Endianness can affect data transmission between systems with different byte orders.

  • Answered by AI
  • Q2. Write a program to determine if your system is little-endian or big-endian.
  • Ans. 

    Program to determine system's endianness

    • Check the endianness by storing a multi-byte integer and checking the byte order

    • Use bitwise operations to extract the least significant byte

    • If the least significant byte is at the lowest memory address, it's little-endian

    • If the least significant byte is at the highest memory address, it's big-endian

  • Answered by AI
  • Q3. What is the volatile keyword in programming?
  • Ans. 

    The volatile keyword in programming is used to indicate that a variable's value can be changed unexpectedly.

    • Volatile keyword is used in multithreaded programming to prevent compiler optimizations on variables that can be changed by other threads.

    • It tells the compiler not to cache the variable's value in a register, ensuring that every access is made to the variable's memory location.

    • Commonly used in embedded systems pr...

  • Answered by AI
  • Q4. What is the use of a function pointer in C?
  • Ans. 

    Function pointers in C are used to store the address of functions, allowing for dynamic function calls and callbacks.

    • Function pointers can be used to implement callbacks in event-driven programming.

    • They can be used to switch between different functions at runtime.

    • Function pointers are commonly used in implementing data structures like function pointers in an array of function pointers.

    • Example: void (*funcPtr)(int) = &a

  • Answered by AI
  • Q5. Design a data structure to implement multi-threading.
  • Ans. 

    Design a data structure for multi-threading

    • Use a thread-safe queue to manage tasks for each thread

    • Implement a lock or semaphore to control access to shared resources

    • Consider using condition variables for synchronization

    • Use atomic operations for shared variables to prevent race conditions

  • Answered by AI
  • Q6. What does a kernel do?
  • Ans. 

    The kernel is the core component of an operating system that manages system resources and provides a bridge between software and hardware.

    • Manages system resources such as CPU, memory, and I/O devices

    • Provides a bridge between software applications and hardware components

    • Handles tasks such as process scheduling, memory management, and device drivers

    • Controls communication between hardware and software layers

  • Answered by AI
  • Q7. What is a storage class in programming?
  • Ans. 

    A storage class in programming defines the scope and lifetime of variables.

    • Storage classes include auto, register, static, and extern.

    • Auto variables are created when a function is called and destroyed when the function ends.

    • Register variables are stored in CPU registers for faster access.

    • Static variables retain their value between function calls.

    • Extern variables are declared outside of any function and can be accessed

  • Answered by AI
Round 2 - HR 

Round duration - 30 minutes
Round difficulty - Easy

HR round with typical behavioral problems.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPANVIDIA interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, Operating Systems, Aptitude, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

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
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Qualcomm Interview FAQs

How many rounds are there in Qualcomm Staff Engineer interview?
Qualcomm interview process usually has 2 rounds. The most common rounds in the Qualcomm interview process are One-on-one Round, Technical and Group Discussion.
How to prepare for Qualcomm Staff 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 Simulation.
What are the top questions asked in Qualcomm Staff Engineer interview?

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

  1. How do you clock domain cross a signal where source and destination clock can a...read more
  2. C coding round. Reverse the linked list, bit manipulati...read more
  3. Regarding projects. Windows device driver architect...read more

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41% more than the average Staff Engineer Salary in India
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