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JPMorgan Chase & Co. Machine Learning Engineer Interview Questions, Process, and Tips

Updated 7 Feb 2022

JPMorgan Chase & Co. Machine Learning Engineer Interview Experiences

1 interview found

I was interviewed in Aug 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 60 Minutes
Round difficulty - Hard

Timings: Early morning 7am (60 mins )
Subsection 1 (30 mins): MCQ round having 30 questions of 11th and 12th Math (complex numbers, trigonometry, calculas), Probability (Expectancy, bayes theorem, other probability question), Coding (Input/Output Question, Time complexity, Stack Push and Pop, Prefix, Postfix).
Subsection 2 (30 mins): 2 Coding Question 1 easy level (Find max in array), other was medium level (Find all the elements in tree which are at same level, where level is depth of smallest path from root to leaf)

Questions were different for each candidate

  • Q1. 

    Maximum Number by One Swap

    You are provided with an array of N integers representing the digits of a number. You are allowed to perform an operation where you can swap the values at two different indices ...

  • Ans. 

    Given an array of integers representing digits of a number, swap two values to form the maximum possible number.

    • Iterate through the array to find the maximum digit.

    • Swap the maximum digit with the first digit if it is not already at the first position.

    • Handle cases where there are multiple occurrences of the maximum digit.

  • Answered by AI
  • Q2. 

    Find Paths in Binary Tree

    Kevin has sketched a series of integers, forming a diagram that represents a binary tree. Challenged by a friend, Kevin needs to find all paths from the root to the leaf where th...

Round 2 - Video Call 

Round duration - 30 minutes
Round difficulty - Medium

Interviewer greeted me and told this round is only on Probability.(This was scheduled same day at 3pm)
He asked Following Probability questions:
Q1: What is Random variable?
Q2: What is Sample space?
Q3: What is Conditional Probability? followed by a Numerical on it.
Q4: What is a Normal Distribution?
Q5: What is Bayes theorem? followed by a numerical on it.
Q6: probability of car accident in one hour is 1/4. What is the probability of accident in half hour?
Q7: Two die are thrown, what is the probability of getting multiple of 3. 
Q8: There is 10 Black socks in drawer, 10 white socks. What is the minimum number of socks we need to pick out such that we get a pair?

Round 3 - Video Call 

(1 Question)

Round duration - 30 minutes
Round difficulty - Medium

Interviewer greeted me and told this round is only on Basic DSA.(This was scheduled same day at 3:30pm)
He asked Following questions:
Q1: Introduction and Explain your resume?
Q2: What if we have one class (which has array functionality) and other class (stack) which we will inherit from array class what could possibly go wrong here?
Q3: What is Static data member in Classes?
Q4: What is Static member function in Classes? Can static member functions call normal data member of classes?
Q5: you are given a 2D grid, each index has some value associated with it. From Bottom right cornor you need to find a path till Top left cornor where you can get maximum sum of values from index occuring on the path, You can go in Up direction, Left direction or diagonal up-left direction? 

I was asked for approach (No coding was done on compiler)

  • Q1. 

    Paths in a Matrix Problem Statement

    Given an 'M x N' matrix, print all the possible paths from the top-left corner to the bottom-right corner. You can only move either right (from (i,j) to (i,j+1)) or dow...

  • Ans. 

    Find all possible paths from top-left to bottom-right in a matrix by moving only right or down.

    • Use backtracking to explore all possible paths from top-left to bottom-right in the matrix

    • At each cell, recursively explore moving right and down until reaching the bottom-right corner

    • Keep track of the current path and add it to the result when reaching the destination

  • Answered by AI
Round 4 - Video Call 

(2 Questions)

Round duration - 15 minutes
Round difficulty - Easy

This round happened around 5pm in evening, i got the call from the interviewer to join Zoom call immediately. In this round (it was kind of rapid fire round on DSA,)
Following questions were asked:
Q1: Introduce yourself and explain your resume.
Q2: What is your favorite data structure and why? I said it is Deque, as it is can be helpful in many questions
Q3: Explain what are segment trees. Also give a question were we can use them.
Q4: What are tries, and give one application of tries.
Q5: Given one array you need to give approach to find out all the permutation of the elements in it. (I gave recursive approach)
Q6: Given the same array and value k, you need to tell if sum of subset can be equal to k. (This question is modification of 0/1 Knapsack. I explained the recursive approach)

Interviewer told me to wait for last HR round (I was on cloud 9 after listening to this as it was elimination round)

  • Q1. 

    Find Permutation Problem Statement

    Given an integer N, determine an array of size 2 * N that satisfies the following conditions:

    1. Each number from 1 to N appears exactly twice in the array.
    2. The distanc...
  • Ans. 

    The task is to find a permutation array of size 2*N with specific conditions.

    • Create an array of size 2*N to store the permutation.

    • Ensure each number from 1 to N appears exactly twice in the array.

    • Check that the distance between the second and first occurrence of each number is equal to the number itself.

    • Return the array if conditions are met, else return an empty array.

  • Answered by AI
  • Q2. 

    Subset Sum Equal To K Problem Statement

    Given an array/list of positive integers and an integer K, determine if there exists a subset whose sum equals K.

    Provide true if such a subset exists, otherwise r...

  • Ans. 

    Given an array of positive integers and an integer K, determine if there exists a subset whose sum equals K.

    • Use dynamic programming to solve this problem efficiently

    • Create a 2D array to store if a subset sum is possible for each element and target sum

    • Iterate through the array and update the 2D array based on current element and target sum

    • Check if the last element of the 2D array is true for the given target sum

  • Answered by AI
Round 5 - Video Call 

Round duration - 20 Minutes
Round difficulty - Easy

This round happened around 6:30pm in evening, i got the call from the interviewer to join Zoom call immediately. It was HR+(Probability mix round).
He asked me following questions:
Q1: Introduce and explain your resume.
As i was unable to solve 2 probability question in Round 2. The interviewer immediately asked me 2 probability questions back to back.
Q2: What is bayes theorem and a numerical on it.
Q3: If there is a frog which can go one step forward with probability 3/4. and one step backward with 1/4. What is expectancy to reach 7 steps forward.

I was unable to solve the last probability ques. Was on right track almost in end of interview.
2/18 students were selected for intern JPMC(Quant Research @ 1.5Lakhs stipend)

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from TIET - Thapar Institute of Engineering And Technology. I applied for the job as Machine learning engineer in MumbaiEligibility criteriaAbove 7 CGPA, No criteria, Need two development projects on ResumeJP Morgan interview preparation:Topics to prepare for the interview - Probability and Statistics, Dynamic programming, Greedy Algorithm, Arrays, Strings, Trees, HeapTime required to prepare for the interview - 2 MonthsInterview preparation tips for other job seekers

Tip 1 : Do Solve Probability questions on Expectancy, Conditional Probability, Bayes theorem and basic 12th level.
Tip 2 : Prepare your Introduction and Be very concise as interviews are of maximum 30 mins each
Tip 3 : Be very communicative and keep trying each question given till end. Never give up!

Application resume tips for other job seekers

Tip 1 : Do include Projects with Live link in resume
Tip 2 : Do Choose simple Format of Word, Don't include to much designing

Final outcome of the interviewRejected

Skills evaluated in this interview

Interview questions from similar companies

Software Engineer Interview Questions & Answers

Barclays user image Shubham Srivastava

posted on 30 Jan 2016

Interview Preparation Tips

Round: Test
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

Interview Preparation Tips

Round: Test
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

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
  • Ans. 

    Finding smallest of 4 numbers without using >.< and min function in Java.

    • Initialize a variable with the first number

    • Compare it with the remaining numbers using if-else statements

    • If a smaller number is found, update the variable

    • Repeat until all numbers are compared

    • The final value of the variable will be the smallest number

  • Answered by AI
  • Q3. Write a code for palindrome
  • Ans. 

    Code for palindrome checking

    • Convert the input to lowercase to ignore case sensitivity

    • Use two pointers, one at the start and one at the end of the string

    • Compare the characters at both pointers and move them towards each other

    • If all characters match, it's a palindrome

  • Answered by AI
  • Q4. Write any javascript code
  • Ans. 

    Javascript code to display 'Hello World!' on the webpage

    • Create a new HTML file

    • Add a script tag with 'type' attribute set to 'text/javascript'

    • Inside the script tag, use document.write() to display 'Hello World!'

  • Answered by AI
  • Q5. Swap two number without using temperory variable
  • Ans. 

    Swap two numbers without using a temporary variable.

    • Use addition and subtraction to swap the values

    • Use XOR operator to swap the values

    • Use multiplication and division to swap the values

  • Answered by AI
  • Q6. How you will add 2 table
  • Ans. 

    To add 2 tables, we need to use a join operation on a common column.

    • Identify the common column between the tables

    • Choose the appropriate join type (inner, outer, left, right)

    • Write the SQL query to join the tables

    • Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column

  • Answered by AI
  • Q7. Difference between union and union all
  • Ans. 

    Union combines and removes duplicates, Union All combines all rows including duplicates.

    • Union is used to combine the result sets of two or more SELECT statements and remove duplicates.

    • Union All is used to combine the result sets of two or more SELECT statements and includes all rows, including duplicates.

    • Union is slower than Union All as it has to remove duplicates.

    • Union requires the same number of columns in all SELEC...

  • Answered by AI
  • Q8. They provide an instance, and tell us to write a query for that
  • 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

  • Answered by AI
  • Q11. How you will overcome from that worst situation

Interview Preparation Tips

Round: Test
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

Interview Questionnaire 

1 Question

  • Q1. Asked many Dbsa questions. You need to be thorough about the joins in the databases.

Interview Preparation Tips

Round: Test
Experience: Practice questions on Indiabix.

Round: Technical Interview
Experience: Operating Systems basics, Dbsa basics

General Tips: 1: Be Confident.
2: Keep Smiling.
3: Do not be Panic.
4: Remember they are here to hire you but not reject you.
5: Do not loose hope.
6: Believe at yourself.
7: Start preparing early.
8: Do demo interviews with your friend.
Skill Tips: Make sure you do a course on object oriented programming
Skills: C, Sql, Java
College Name: BITS PILANI
Motivation: Every body joins a comapny for making a software or earning money. But I was always motivated to MAKE MONEY. I have taken this job because they have very extensive work in Share Market and they have lots of MBA from IIM's, Lots of CAs, CS. Thats why i have choosen Edelweiss. I have rejected epic System USA for this profile.

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: The written test was quite similar to the typical CAT pattern. It contained sections on Reading Comprehension, Data Interpretation and Mathematics.

Round: Technical + HR Interview
Experience: There were 2 interviewers in the first interview, one was a technical guy and the other was from HR. They asked me a few very simple puzzles, a few basic programming questions (swapping the value of two variables etc.), questions related to the development cycle of software products. The HR guy asked stuff like what do you want to achieve in life? Strengths, weaknesses etc.

Round: Case Study Interview
Experience: The third interview was the most important one (and I guess that was the deciding interview). The interviewer started with questions like why finance? Which companies are you sitting for? Then he gave me a case study:

Interview Questionnaire 

2 Questions

  • Q1. Oops, os, dbms, project
  • Q2. Why hsbc, why should I hire you.
  • Ans. 

    I have a strong background in software engineering and a passion for innovation, making me a valuable asset to HSBC.

    • I have a proven track record of successfully delivering high-quality software solutions in previous roles.

    • I am highly skilled in various programming languages and technologies, including Java, Python, and SQL.

    • I have experience working in agile development environments, allowing me to adapt quickly to chan...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: 4 sections, 15 questions each. Sections on apti, english, programming, technical.
Tips: Time management, complete english and technical first
Duration: 1 hour
Total Questions: 60

Round: Group Discussion
Experience: We were asked which super hero would you like to be. Shared the information. Always present the positives and negatives and emphasize that despite of being negatives
Tips: Think everything through before speaking
Duration: 40 minutes

Round: Technical Interview
Experience: Prepare well, anything can be asked on the things written on your resume

Round: HR Interview
Experience: Sell yourself. Tell them why you would be the best candidate.
Tips: Tell your advantages of being a fresher that you would be comfortable in any technology

College Name: Acropolis institute of technology and research

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

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JPMorgan Chase & Co. Machine Learning Engineer Salary
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