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Engineer Qualcomm | Hyderabad
- Author
- Shared Anonymously
Current Experience : A big Tech Company, Bangalore India
Years of experience : 2.5 years
Verdict : Rejected
Note : Not entirely sure why this happened, maybe I couldn't make them believe that I would join qualcomm for sure, or a zillion other reasons. rounds went good, that I am sure about !
How : I reached to a recruiter after seeing a LinkedIn post, team works on NPU side [qualcomm's custom hardware] for laptop SOCs, and the rounds got scheduled.
Note : Since the team has tech stack written in "Python", Tech recruiter asked to write code in Python for better alignment.
Round 1 : [With a mid-senior level engineer, 1 hour]
A bunch of parsing + DSA mixtures
Question 1 [Python Parsing]
- Do
ls
on a cli and copy the cli output and then get all the files which are greater than 800 bytes in size.
Question 2 [Implement Stack Class]
- Used array as underlying data-structure.
Question 3 [Go from position 1 to position N, steps are 2x, or x - 1]
Example : if you at position 10, you can go to position 20 or position 9.
Hint : Think Greedy
Question 4 [Some more general stuff, don't remember]
Round 2 [With a senior developer, 1 hour]
Question 1 :
- Given a array A, find the local maxima and local minimas.
- local minima at idx i happens if
A[i - 1]
>A[i]
<A[i + 1]
- local maxima at idx i happens if
A[i - 1]
<A[i]
>A[i + 1]
Question 2 : https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/description/
- On similar minimas and maximas line, buy at local minima and sell at local maxima
- Have to implement a binary search as well in bw; worked on the test cases; can't say for sure if this is how to do this !
Question 3 : [LLD, create a bank service]
Functional Requirements:
- Ability to open a new account
- Ability to onboard a new customer.
- Debit / Credit Transactions on the account per customer_id
- Check Balance
How to solve :
-
Think major entites :
Bank, Branch, Customer, Account, Transaction
Credit inherits : Transaction
Debit inherits : Transaction
Check Balance inherits : Transaction -
Create CRUD classes for each entity, take DB as SQL type so 1:1 mapping from class to tables.
-
Had to write just
AccountService
class and a function calledopenAccount(customer_id : str, initial_balance: float, branch : name)
; and interviewer figured out that I would be able to do this, so this got over.
Round 3 [Basics of CS with EM; highly ranked individual]
Questions :
- What are some sorting algos that come to your mind, state time complexity !
- What are types of trees that you are familiar with !
- Remove duplicates from a
SinglyLinkedList
that is sorted on values. - Why qualcomm ?
- Why moving ?
- General Stuff !