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Charles Schwab Machine Learning Engineer Interview Questions and Answers
Charles Schwab Machine Learning Engineer Interview Experiences
1 interview found
Anonymous
I appeared for an interview in Dec 2023.
(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
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".
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Interview questions from similar companies
I appeared for an interview in Jun 2017.
Interview Questionnaire
1 Question
- Q1. Questions related to core java, advanced java, programs,
Interview Preparation Tips
Experience: Previous work experience scenarios based questions
I appeared for an interview before Mar 2021.
(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...
- 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.
- 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...
Interview Preparation Tips
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.
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.
Skills evaluated in this interview
Interview Questionnaire
11 Questions
- Q1. 1st technical round
- Q2. How you will find the smallest of 4 numbers without using >.< and min function using java
- Q3. Write a code for palindrome
- Q4. Write any javascript code
- Q5. Swap two number without using temperory variable
- Q6. How you will add 2 table
- Q7. Difference between union and union all
- Q8. They provide an instance, and tell us to write a query for that
- Ans.
Crafting SQL queries requires understanding the database schema and the specific requirements of the task.
Understand the database schema: Know the tables, columns, and relationships.
Identify the requirements: Determine what data is needed based on the instance provided.
Write the SQL query: Use SELECT, JOIN, WHERE, and other clauses as necessary.
Test the query: Run the query to ensure it returns the expected results.
- Q9. Tell me about yourself
- Q10. The worst situation during your internship period
- Ans.
Being assigned a project with unrealistic deadlines and minimal guidance
Received a project with tight deadlines and unclear requirements
Struggled to meet the deadlines due to lack of guidance and support
Had to work long hours and weekends to try to complete the project
Learned the importance of clear communication and setting realistic expectations
- Q11. How you will overcome from that worst situation
Interview Preparation Tips
Experience: The question were not that much difficult. Many apti questions are easy. Technical was very easy for me.
The questions were fully based on java, c and SQL. 7 to 8 questions are from SQL. But all are straight forward questions. Other 2 sections were easy and any student who had a good sort of thinking ability can able to solve those questions.
Tips: Just refer all the basic topics in java, c and sql.
Duration: 60 minutes
Total Questions: 50
Round: Technical Interview
Experience: It was fully based on the final sem project which i was doing.
Since my project is company's employee portal, i was asked about that. They will dig into deep with respect to that project.
Tips: U should be aware of each and everything in your project which you are going to explain them. The question which they use to ask is really unpredictable.
Round: Technical Interview
Experience: This is pure technical round where i was asked the questions which is easy but takes time to think. Anyhow, i answered all these questions and get into the next round.
Tips: Logical thinking matters. Though questions look easier, sometimes we co calculate with wrong manner.
So keep calm and think in a broader manner.
Round: Technical Interview
Experience: Technical round with pure database stuffs. I was asked only few question in this. Since it was straight forward, i answered all the questions.
Round: HR Interview
Experience: Confidence really matters. Though i was not that much good in conversing, i spoke with brave and confidently which makes me to became a part of the barclays team.
General Tips: Be confident enough and answer them what you know.
Talking too much as well as taking less is also a problematic.
Skills: Logical thinking, Technical skills ( Especially about database )
College Name: MANIPAL INSTITUTE OF TECHNOLOGY, MANIPAL
Motivation: Credits should goes to my bro who motivates me to apply to this comapny.
Skills evaluated in this interview
Shubham Srivastava
Interview Preparation Tips
Experience: General aptitude consisted of quantitative questions .There were 6 questions and suggested time as 10 minutes. Questions were of easy level. Questions based on numbers,distance,time etc..Answers of general aptitude were to be written in textbox. eg ans is 4,write 4. there were no options in quant. Answers were integers an easy.
Technical comprehension involved two paragraphs and questions based on sql.
Logical analysis contained questions of logical deduction mainly.
Program tracing involved finding output of programs(mainly while loop and if else)..
Programming : There was only one question of programming(to be solved in 30 minutes). Code was given and was to be modified.Modification involved like , find out the least salary of employees,... (they used file input output and structures).
Tips: Practice basic aptitude.Concepts should be clear.
Duration: 90 minutes
Total Questions: 18
Skills: Basic C/C++, Logical Thinking, Logical Reasoning, General Aptitude
College Name: NIT Raipur
Ritika Nevatia
Interview Preparation Tips
Experience: Study data interpretation (calculator allowed) and pattern puzzles
Round: Group Discussion
Experience: Two topics (have been same case studies for past 4 years now): - Mobile app improvement - Making a business decision
Round: HR Interview
Experience: Everything depends only on HR interview
Tips: Make a list of your strengths and an example for each!
Round: Technical Interview
Experience: Short, easy and basic questions asked about projects and DS. Pretty chilled
College Name: Sardar Patel Institute of Technology
Sachin Aglave
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
- 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...
- 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)
Interview Preparation Tips
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
I applied via Naukri.com and was interviewed in May 2021. There were 5 interview rounds.
Interview Questionnaire
1 Question
- Q1. Microservices related, Caching, More of logical and situation based questions, Java 8 features
Interview Preparation Tips
I applied via Naukri.com
Interview Questionnaire
1 Question
- Q1. About experience into relavant technology, what all technical side you have worked upon
Interview Preparation Tips
First two rounds were average in my case , while 3rd round(technical) was long and intensive, and covered most aspect of the technology I was interviewed for
Selected
I applied via Referral and was interviewed before Jan 2024. There were 2 interview rounds.
(2 Questions)
- Q1. How does polymorphism work?
- Q2. Sort an array rotated at some pivot
(2 Questions)
- Q1. How do you handle conflict in team
- Q2. Tell about an instance when you showed leadership skills
- Ans.
Led a team project to develop a new feature for our company's software platform
Initiated weekly team meetings to discuss progress and address any issues
Delegated tasks based on team members' strengths and availability
Provided guidance and support to team members throughout the project
Presented the final product to senior management and received positive feedback
Interview Preparation Tips
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