Qualcomm interview questions
Qualcomm's campus test in India splits by track from the start. Everyone takes aptitude and C programming sections, then software candidates get computer-science core questions and hardware candidates get digital design. The test is multiple choice with negative marking and has no coding section, so the coding happens live in the interviews. Software interviews lean on C and operating-system internals more than puzzle-style DSA. Hardware interviews test Verilog, state machines and timing.
Roles covered: Software engineers (embedded C, C++ and systems) and hardware engineers in VLSI, design verification and FPGA, mostly in Hyderabad and Bengaluru. We are not affiliated with Qualcomm and this is not an official question bank. It describes what candidates consistently report, reviewed for the 2025–26 hiring cycle. Confirm the current process on the company’s own careers page before you apply.
Online assessment (campus)
Multiple choice in three sections, with negative marking and no coding problems
Aptitude, C/C++ and OOP, then either CS core for software or digital logic for hardware.
Technical interview 1
Live, often 30 to 60 minutes
Software: C internals, operating systems and easy-to-medium DSA. Hardware: digital design, Verilog and state machines.
Technical interview 2
Similar length, often on the same day
Deeper questions on your projects, and puzzles in many hardware loops.
HR or hiring manager
Campus HR is short. Experienced hires get a hiring-manager or panel round, sometimes in person
Location preference and why Qualcomm. Experienced hires also get asked about their hardest bug and how they handle deadlines.
(Software) What does the volatile keyword do in C, and when do you need it?
Explain that it stops the compiler from caching the variable, then give a real case like a hardware register or a value changed by an interrupt.
(Software) Reverse a linked list, or find the nth node from the end.
Linked lists are the most reported DSA topic here. Code it cleanly and handle the empty and single-node cases.
(Software) Explain deadlock, and how semaphores or spinlocks help.
Name the four conditions for deadlock, then say when you'd pick a spinlock over a semaphore. Embedded roles go deep on this.
(Hardware) Design a sequence detector for an overlapping pattern like 1001 in Verilog.
Draw the state machine first, say whether it's Mealy or Moore, then write the Verilog. Explain how overlap changes the transitions.
(Hardware) Build an AND gate, or a 3-input XOR, using only multiplexers.
Work it out from the truth table on paper. Interviewers care about your method more than your speed.
(Hardware) What are setup and hold time, and how does a two-flop synchroniser help with clock domain crossing?
Define both with a timing diagram, then explain metastability and why two flops reduce its risk.
Do you prefer Hyderabad or Bengaluru?
This comes up in most reports. Say your preference and whether you'd accept the other city.
Tell me about yourself and your projects.
Lead with the project closest to the team's work, whether that's embedded software, systems or chip design.
Why Qualcomm?
Name the product area you're interested in, like mobile chipsets, modems or automotive, and why your skills fit it.
(Experienced) Why are you leaving, and what's your notice period?
Give a short, positive reason and an accurate notice period. Recruiters ask this early to plan the offer.
- Practise for negative marking. Skip the questions you'd only be guessing on.
- For software roles, revise C and operating systems before DSA practice. That's where most questions come from.
- For hardware roles, practise drawing state machines and timing diagrams by hand. Many interviews happen on paper or a whiteboard.
Practise them, don’t only read them
Practise these against an AI interviewer that asks the follow-ups and scores your answer, including the HR questions on notice period and expected CTC. Or check your resume first with the free ATS score checker.
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