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Charles Schwab Machine Learning Engineer Interview Questions and Answers

Updated 27 Jun 2024

Charles Schwab Machine Learning Engineer Interview Experiences

1 interview found

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
-
Result
Not Selected

I was interviewed in Dec 2023.

Round 1 - HR 

(3 Questions)

  • Q1. Resume Screening. Experience and Projects Overview.
  • Q2. Core Values of the Company and how you align.
  • Q3. Why Charles Schwab? Why this role?

Interview Preparation Tips

Interview preparation tips for other job seekers - Charles Schwab HR Screening Round for Machine Learning Engineer position (Entry-level) - - Location: Phoenix, AZ, USA.

This was strictly a resume screening interview to check whether my skills aligned with the job opening.
Prepare well for the key details of the company and its core values. Be exceptionally well prepared about your own resume and try to align as much as you can to the role. There will be a high number of candidates vying for the role and you have to make your best mark to make it to the technical round phase.

Did not clear this round - was disappointed. I gave a good account but there were candidates who's skills were "little bit more aligned for the role".

Interview questions from similar companies

Interview Preparation Tips

Round: Test
Experience: 7 CGPA cut off, The First round was an Aptitude test (quant+DI+verbal ) 20 questions + 10 basic C/C+ questions
Total Questions: 30

Round: Other Interview
Experience: Second Stage: 2 rounds Tech interview + 1 HR, Very casual personal interview with questions based on resume onlyNo core coding questions since I was from ECE but for Comps/IT they expect knowledge in DBMS.Some finance questions like what are stocks/shares, mutual funds etc. I was asked more detailed finance questions also since I had mentioned my finance interns.

Skill Tips: Be thorough with apti tests . Past CAT papers are ideal as they cover all aspects  (quant+Data Interpretation +Logical reasoning +verbal ) For learning finance jargon use Economist A-Z list and Investopedia
Skills: quant, Data Interpretation , Logical reasoning
College Name: NIT SURATHKAL

I was interviewed before May 2016.

Interview Preparation Tips

Round: Written Test
Experience: I attended interview at hyderabad location for java Sr.Software Engineer.
1Q) Find out given string palindrome or not.
Ex: madam
2Q) Find first and last index searching number in a array.
Ex: [1,2,3,3,3,3,4,5]
Output : 2,5
3Q) Arrange Strings in alphabetical order.

Tips: Prepare numeric and string related algorithms

Interview Questionnaire 

4 Questions

  • Q1. Tell me about your internship, B.Tech project(BTP), CV
  • Q2. Implement LRU cache.
  • Ans. 

    Implement LRU cache

    • LRU stands for Least Recently Used

    • It is a cache eviction policy that removes the least recently used item

    • It can be implemented using a doubly linked list and a hash map

    • Newly accessed items are moved to the front of the list

    • When the cache is full, the item at the end of the list is removed

  • Answered by AI
  • Q3. What is virtual memory? Will we need virtual memory even if we have infinite amount of RAM?
  • Ans. 

    Virtual memory is a memory management technique that allows a computer to use more memory than it physically has.

    • Virtual memory uses a combination of RAM and hard disk space to store data.

    • It allows programs to use more memory than is physically available.

    • If a program tries to access memory that is not currently in RAM, it will be swapped in from the hard disk.

    • Even if we had infinite RAM, virtual memory would still be n...

  • Answered by AI
  • Q4. Given an array, Find out maximum length of subarray where max of subarray <= 2*min of subarray
  • Ans. 

    Find maximum length of subarray where max <= 2*min.

    • Iterate through array and keep track of max and min values.

    • Update max length when condition is met.

    • Time complexity: O(n)

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: No CPI cut off and It was open for all departments.

Round: Test
Experience: In muliple choice question Mostly questions were base on maths, probability, c programs, algorithms, Systems. If you are prepared then Questions were not that much tough. Keep strong concepts of Operating systems. For subjective part, Some problems were from maths proofs, some were from probability, some were from algo. We had to write algorithms. etc
Duration: 180 minutes

Round: Problem Statement
Experience: Questions were doable.

Round: Interview
Experience: Everyone was cool, They made me feel comfortable and then started asking questions.
Tips: If you have good rank in online coding competition, do mention it in CV.Most of the students think that GS asks only probability-puzzles. They did not asked me any question on probability or puzzle. Everything they asked was based on Algorithms problems and Operating system. I think it depends on team for which they are hiring. Most important point is don’t lose hope because you have low CPI or you are not good at something. Keep Operating systems fundamental concepts strong.

General Tips: We should balance in Placement and Compititive online coding. Keep in mind Placements and Compititive online coding are some what different things. Keep on improving our mistakes on daily basis. I would strongly suggest you to do introspection daily it will help you to find out your weaknesses and strong points, where we are going wrong etc. There are two thing on which we shoud focus.1. Preparation (I have told everything requered for preparation).2. Get output of all hard work. How to keep our mind on 100% output while the actual exam(placement).For this, I used to go for physical exercise daily in the morning and medidate for 20-30 minutes. Along with exercise i used to do Sudarshan Kriya(Art of Living). Meditation has lot of power :).
Skill Tips: Keep your OS fundamentals strong. To improve codgin skills practice as many problems as you can. Regularly participate in online coding competitions it really helps to solve or approach any new problem. Many time instead of correct answer the approach to solve the problems is very important. How you think, How you approach the problem is checked in interview.
Skills: Coding Skills, Operating Systems , Problem solving skills
College Name: IIT Guwahati
Motivation: The name GS itself enogh for motivation.

Skills evaluated in this interview

Interview Preparation Tips

Round: Test
Experience: It was AMCAT Test. Verbal was bit of tough.Somehow i managed. But I could not get the time for Quants to solve. Logical and Programming was good. Basics were asked in Programming from data structures, C and OOPS.
Tips: Kindly Practice well.There is lot of websites for preparing interview test.Avail that.Go through all the Basic concepts from your core subjects.Be perfect about the concepts.Do not get tensed while seeing big questions.Read twice you would feel easy about that qus .Do well.ALL THE BEST. Initially Confidence should be there.
Duration: 2 hours minutes
Total Questions: 100

College Name: VIT VELLORE
Motivation: For time being i dont have any idea about that company since am not entered into.But my seniors and well wishers are saying that its really a good company for freshers to enhance their knowledge.
Funny Moments: Ha Ha Ha.. Personal Interview was Good.HR Interview was very chill. It was so excitement one.

I was interviewed before Mar 2021.

Round 1 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Technical round with questions on DSA and OS.

  • Q1. 

    LRU Cache Design Problem Statement

    Design and implement a data structure for a Least Recently Used (LRU) cache that supports the following operations:

    • get(key) - Retrieve the value associated with the...
  • Ans. 

    Design and implement a Least Recently Used (LRU) cache data structure that supports get and put operations with a specified capacity.

    • Implement a doubly linked list to keep track of the order of keys based on their usage.

    • Use a hashmap to store key-value pairs for quick access and updates.

    • When a key is accessed or updated, move it to the front of the linked list to mark it as the most recently used.

    • When the cache reaches...

  • Answered by AI
  • Q2. 

    Maximum of All Subarrays of Size K

    Given an array of non-negative integers and an integer K representing the length of a subarray, your task is to determine the maximum elements for each subarray of size ...

  • Ans. 

    Find the maximum elements for each subarray of size K in a given array.

    • Iterate through the array and maintain a deque to store the indices of elements in decreasing order.

    • Pop elements from the deque that are out of the current window.

    • Keep track of the maximum element in each subarray of size K.

    • Return the maximum elements for each subarray.

  • Answered by AI
  • Q3. What is virtual memory?
  • Ans. 

    Virtual memory is a memory management technique that allows a computer to compensate for physical memory shortages by temporarily transferring data from RAM to disk storage.

    • Virtual memory allows programs to use more memory than is physically available on the system.

    • It helps in multitasking by allowing multiple programs to run simultaneously without running out of memory.

    • Virtual memory uses a combination of RAM and disk...

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAGoldman Sachs interview preparation:Topics to prepare for the interview - Coding Skills, Operating Systems , Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 5 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 interviewRejected

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in May 2019. There were 5 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Related debugging, views, scripting, control_m schedule related & Aws basic concepts and real time issues

Interview Preparation Tips

Interview preparation tips for other job seekers - We should be very carefully while answering the question because with in that answer again they will ask one more question.

And be confident

Interview Questionnaire 

1 Question

  • Q1. Design patterns, architecute based questions, some questions on .net and .net core

I applied via LinkedIn and was interviewed in Mar 2021. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. All were Ds and algo questions?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be prepared on DS and algo section. Also keep practising on online competitive coding.

I applied via Campus Placement and was interviewed before Jan 2021. There were 4 interview rounds.

Round 1 - Group Discussion 

Generic topics that were trending at the time

Round 2 - One-on-one 

(1 Question)

  • Q1. Puzzle round - aptitude
Round 3 - One-on-one 

(1 Question)

  • Q1. Technical Round - coding related questions
Round 4 - Group Discussion 
Pro Tip by AmbitionBox:
Be a good listener. GDs are not just about speaking. Your listening skills will give you a lot of points to counter and speak when your turn comes.
View all tips

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident and ensure you're clear with job requirements to clear rounds

Charles Schwab Interview FAQs

How many rounds are there in Charles Schwab Machine Learning Engineer interview?
Charles Schwab interview process usually has 1 rounds. The most common rounds in the Charles Schwab interview process are HR.

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Charles Schwab Machine Learning Engineer Interview Process

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