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Charles Schwab Software Developer Intern Interview Questions and Answers

Updated 14 Feb 2024

Charles Schwab Software Developer Intern Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed before Feb 2023. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Questions related to api, http pipeline, mongodb, mvc lifecycle, string related coding

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for Web Api in detail with whole lifecyle. Mongodb go through basic definitions.

Interview questions from similar companies

Interview Preparation Tips

Round: Technical Interview
Experience: Technical on paper test questions:(dis was only for 12 among d 26 shortlisted ppl after apti...others directly had interviews)
5 wer selected in this test who wer nw sent for interviews
TECHNICAL INTERVIEW: (pls list the questions asked in all the rounds)
26 shortlisted after apti (14 directly for interviews & 12 had one more technical on paper test...mentioned above)
der wer min 2 technical rounds for each of them...max were 5

- You are given course dependencies
A->B,C
B->D
C->A
D->nothing
The above dependencies mean...if you want to take course A...you should take courses B and C first....To take B,Course D must be taken first....D is an independent course and can be taken without any prior requirements.
Now you are told these dependencies.Come up with an appropriate data structure to represent these dependencies.Then write a code that finds out all the courses that the student can take up...in this case the student can first take course D because its independent.Now that course D has been taken he can next take up B as it depends on B alone...But the courses A and C can never be taken because they depend on each other...So here all the courses that can be taken are B and D.
After i wrote the code....he asked for all possible test cases
-Given an array of length N....It can be filled with nos. only from 1 to N....find which nos are repeated in the array
-Given pointers to two nodes in a binary tree....find their least common ancestor...each node has pointer to only the parent node...not the left and right child..
-In a binary tree(Not necessarily a BST)...suppose the weight of any node is defined as the product of the key value of the node and the level of the node(Root at level 1)...find the node with maximum weight in the binary tree
-A sorted array of size n is right circularly rotated k times and this rotated array is given to you as input...Find out the value of k in log n time .
-There are some processes running at time T....and there are processes running at time T+30.
You have to find out
1)Which processes died at time T+30,which were alive at time T
2)Which are the new processes at time T+30,which were not there at time T
3)Which are the processes that were there at time T and are still running at time T+30
What data structure will you use to represent the process lists and write code to find out the answers to the 3 questions above
-Given a binary search tree...and a target sum...starting at the root...which all paths add up to the target sum?...if there are multiple paths....return the path with least no. of nodes.


College Name: Veermata Jijabai Technological Institute, Mumbai [ VJTI ]

Interview Questionnaire 

11 Questions

  • Q1. What is the difference between multi tasking, multi processing and multi programming operating systems with examples ?
  • Ans. 

    Multi tasking, multi processing, and multi programming are different approaches to managing tasks in an operating system.

    • Multi tasking allows multiple tasks to run concurrently on a single processor.

    • Multi processing involves multiple processors running tasks simultaneously.

    • Multi programming allows multiple programs to be loaded into memory and executed concurrently.

    • Examples of multi tasking operating systems include Wi...

  • Answered by AI
  • Q2. Tell me about memory allocation (stack vs. heap)?
  • Ans. 

    Memory allocation refers to the process of assigning memory to programs during runtime.

    • Stack allocation is done automatically and is limited in size.

    • Heap allocation is done manually and is larger in size.

    • Stack memory is used for local variables and function calls.

    • Heap memory is used for dynamic memory allocation.

    • Memory leaks can occur if heap memory is not properly managed.

  • Answered by AI
  • Q3. You have two threads one printing even numbers in order and other odd numbers. Design an algorithm so that it prints numbers in natural order?
  • Ans. 

    Use a shared variable and synchronization mechanisms to ensure natural order printing of numbers.

    • Create two threads, one for printing even numbers and the other for printing odd numbers.

    • Use a shared variable to keep track of the current number to be printed.

    • Implement synchronization mechanisms like locks or semaphores to ensure only one thread can access the shared variable at a time.

    • Each thread should check if it is i...

  • Answered by AI
  • Q4. Print a matrix in spiral order?
  • Ans. 

    Printing a matrix in spiral order

    • Start from the first element and print it

    • Move in a spiral order towards the center of the matrix

    • Repeat until all elements are printed

  • Answered by AI
  • Q5. Thread class and Runnable Interface?
  • Ans. 

    Thread class and Runnable Interface are used for multithreading in Java.

    • Thread class is a predefined class in Java that provides methods to create and control threads.

    • Runnable interface is used to define a task that can be executed by a thread.

    • Thread class implements Runnable interface.

    • Thread class provides more control over threads than Runnable interface.

    • Example: Thread t = new Thread(new MyRunnable()); t.start();

    • Exa...

  • Answered by AI
  • Q6. What’s the difference between a Linked List and an ArrayList and give me an example of when to use which?
  • Ans. 

    Linked List is a dynamic data structure while ArrayList is a static data structure.

    • Linked List is best for frequent insertion and deletion operations.

    • ArrayList is best for frequent access operations.

    • Linked List uses more memory than ArrayList.

    • ArrayList is faster than Linked List for accessing elements.

    • Use Linked List when you need to frequently add or remove elements from the list.

    • Use ArrayList when you need to frequen

  • Answered by AI
  • Q7. Questions of OS concepts?
  • Q8. A role play scenario was given. With a clear instruction on I don’t need to know the basis and the hypothetical assumption was presented. I was told that I was expected to respond to the given scenario, in...
  • Q9. Why are you interested in a career in investment banking?
  • Ans. 

    I am not interested in a career in investment banking.

    • I am more interested in a career in software development

    • I enjoy problem-solving and creating innovative solutions through coding

    • Investment banking does not align with my passion and skill set

  • Answered by AI
  • Q10. Why have you chosen to apply to J.P. Morgan?
  • Ans. 

    I have chosen to apply to J.P. Morgan because of their reputation, global presence, and opportunities for growth.

    • J.P. Morgan has a strong reputation in the financial industry.

    • They have a global presence with offices in multiple countries.

    • The company offers various opportunities for career growth and development.

    • J.P. Morgan is known for its innovative technology solutions in the financial sector.

    • I am impressed by their ...

  • Answered by AI
  • Q11. Have you ever made a mistake? Tell us about it?
  • Ans. 

    Yes, I have made a mistake in my previous project.

    • I underestimated the complexity of a task and ended up missing the deadline.

    • I failed to properly test a feature, resulting in a bug that affected user experience.

    • I accidentally deleted an important file without having a backup.

    • I misunderstood a requirement and implemented a feature incorrectly.

  • Answered by AI

Interview Preparation Tips

Round: Test
Total Questions: 1

General Tips: Interview Process: Aptitude test, followed by 3 rounds of interview. Interview process was very good. Just be positive to clear the interview.
Check this link before appearing for interview with JP Morgan. It will help  -----
Skills: Algorithm, Data structure, Stack
College Name: Na

Skills evaluated in this interview

Interview Preparation Tips

Round: Test
Experience: The first round was an online test with maths, logic and english questions. If you have prepared for any of the standardised tests (GMAT, GRE, CAT etc.), the test would be pretty simple. And try to answer as many questions as possible.
Tips: It would be really helpful if you give atleast your first attempt to any of the exams like GMAT, GRE etc. This is only for the online test because the pattern is quite similar to GMAT. For the interviews, be prepared for a set of standard questions asked during interviews that you can easily find online.

General Tips: Be prepared to spend all day at the interviews. You might not even get a lunch break. Sometimes the interview calls are late at night and also extend upto 2-3am. Be alert during the Pre-placement talk because the interviewers ask you questions from that too. I would advice you to ask questions to the interviewer when asked to regarding the company.
Don't write fake stuff in resume. At max you can exaggerate a bit in your CV. The panel does question you on your CV. Everything in it must be justified.
Skills:
College Name: NIT Surathkal

Interview Preparation Tips

Round: Test
Experience: It was an easy test overall, basic programming things were asked in technical part of test whereas aptitude questions were also relatively easy.
Tips: You just need to know things which were there in CS101 for technical part of test .Nothing else is required.
Duration: 30 minutes
Total Questions: 1

Skills: Problem
College Name: Indian Institute of Technology, Bombay

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

Interview Questionnaire 

11 Questions

  • Q1. Print all nodes at a distance k from a given node in binary tree?
  • Q2. RandN function : which generates random number in [1,2,3..N] with equal probability. Given rand5, write a code for rand7 using rand5
  • Ans. 

    Code for rand7 using rand5 function

    • Use rand5 twice to generate a number in [1,25] with equal probability

    • If the number is greater than 21, discard and try again

    • Otherwise, return (number mod 7) + 1

  • Answered by AI
  • Q3. Puzzle: Using all(8,8,3,3) and only operators(*,/,-,+), make 24
  • Q4. How do you implement LRU cache?
  • Ans. 

    LRU cache is implemented using a doubly linked list and a hash map.

    • Create a doubly linked list to keep track of the order of elements in the cache.

    • Create a hash map to store the key-value pairs of the cache.

    • When a new element is added, check if the cache is full. If it is, remove the least recently used element from the linked list and the hash map.

    • When an element is accessed, move it to the front of the linked list to...

  • Answered by AI
  • Q5. Your current project in Company? A lot of questions from CV? Discussion went on for about 15 minutes?
  • Q6. Then had a lot of questions around java script and java. About different design patterns and web services
  • Q7. A lot of questions around java, collections frameworks, multi threading and so on. (This took a good 25-30 minutes )
  • Q8. A strategy question. It would be asked depending on which team you are being interviewed for.Mine was some apple seller problem. Here knowledge of real world scenario helps. Advice is to observe things aro...
  • Q9. Write down function to select pivot element randomly in Quick Sort
  • Ans. 

    Function to randomly select pivot element in Quick Sort

    • Generate a random index within the range of the array

    • Return the element at the randomly generated index as the pivot

  • Answered by AI
  • Q10. He asked me what is a data structure and why do we use one. Explained him. He asked some real life example of stack and queue. All I could gave him was programming examples but when he insisted on real li...
  • Q11. As we were talking very much on each question. He felt like talking more and from tech he went around for some biggest learning from a mistake/biggest achievement of life kind of questions. There were oth...

Interview Preparation Tips

General Tips: I recently interviewed with Goldman Sachs, and had 4 rounds of interview with them at their campus in Bangalore.
Skills: Algorithm, Data structure
College Name: na

Skills evaluated in this interview

Interview Questionnaire 

4 Questions

  • Q1. One coding question.
  • Q2. Questions on Data Structures
  • Q3. Logical Question: You are a captive. If you say the right answer, the assasin will hang you, if you say the wrong answer, he will shoot you. How do you escape?
  • Q4. Other aptitude questions

Interview Preparation Tips

Round: Other Interview
Experience: One year since I took the interview, so no idea exactly what questions they asked. But I was asked to write the code on paper in front of him and was asked to debug it. Some puzzles and aptitude questions along with other basic coding questions. It was great that the guy was interactive and started asking about my projects and college life.
Btw the answer to the logical question is: I should say " you will shoot me". Paradoxical.
Tips: Feel free to ask anything that you would like to know from them. Also frankly say that you don't know a certain topic if you have no clue what it is about. They don't like people wasting their time.

Round: HR Interview
Experience: This was not exactly a technical interview. He asked me to write a code to find the day of week when a certain date in any year of the calendar is given. I answered it and then he starting asking general questions as to why do u want to join the company, etc.
I gave answers to most of them convincingly. But I kept him engaged by explaining my life at college, the extra curriculars I did at college. Also I asked him about his experience as a software engineer. I asked him to reflect upon his career and how I should approach about my career.
Tips: The best part about HR interviews is they expect you to ask them lots and lots of questions. The more they are engaged, the more are your chances of impressing and getting selected. And more importantly, ask the interviewer about his experience with the present firm. This also works with my manager when ever he has a one on one with me :P
Cheers and all the best.

Skills: Soft Skills, General Aptitude, LOGICAL THINKING ABILITIES, Coding Skills And Knowledge On Data Structures
College Name: IIT Hyderabad

I was interviewed in Dec 2016.

Interview Preparation Tips

Round: Test
Experience: Programming section had basic questions on C++ & data structures.
Tips: Try to score maximum in aptitude test, they consider your score while placement.
Duration: 2 hours
Total Questions: 35

Round: Technical Interview 1
Experience: Questions asked during this round:
Introduce yourself.
Questions on projects & internships.
Questions on Final year project in detail (max part of interview was on final year project).
Basic concepts of C++.
Few programs on C++.
Puzzles.


Round: Technical Interview 2
Experience: ? 2 interviewers were there.
? Stressed interview.
? They grilled me a lot on C++ & data structures.
One interviewer started asking questions, and before I could complete my answer, another used to cut me in
middle & start asking another question. I realized it

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

Charles Schwab Interview FAQs

How many rounds are there in Charles Schwab Software Developer Intern interview?
Charles Schwab interview process usually has 1 rounds. The most common rounds in the Charles Schwab interview process are Technical.

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