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Blackrock Backend Developer Interview Questions and Answers

Updated 1 Sep 2024

Blackrock Backend Developer Interview Experiences

2 interviews found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Multithreading concepts collection
Round 2 - Technical 

(1 Question)

  • Q1. Spring core, jpa , Microservices

Backend Developer Interview Questions & Answers

user image hari om gautam

posted on 7 Aug 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Question will be mostly related to Java stream, collection and multithreading

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Interview questions from similar companies

I applied via Instahyre and was interviewed in Feb 2022. There were 2 interview rounds.

Round 1 - Coding Test 

A hackerrank test was shared which had 2 ques to be solved in 60 min in Node.JS. The first one was a simple DS question related to arrays. The second ques was to write routes and controllers for a Node.JS Express app. The routes were GET /projects, GET /project/:id and GET /projects/active

Round 2 - One-on-one 

(5 Questions)

  • Q1. What is the difference between package and package-lock.json?
  • Ans. 

    package.json lists dependencies and package-lock.json ensures consistent installs.

    • package.json lists all the dependencies required for the project

    • package-lock.json ensures that the same versions of dependencies are installed across all environments

    • package.json is manually edited while package-lock.json is generated automatically

    • package-lock.json is used for reproducible builds

  • Answered by AI
  • Q2. Write a function that can keep a count of certain functions in our application.
  • Ans. 

    Function to count certain functions in the application

    • Create a dictionary to store the count of each function

    • Increment the count of the function each time it is called

    • Include a reset function to reset the count of all functions

    • Example: def count_functions(): function_count = {}

    • Example: def function1(): function_count['function1'] += 1

    • Example: def reset_count(): function_count.clear()

  • Answered by AI
  • Q3. How can we make sure that package versions are taken from package-lock.json and not package.json
  • Ans. 

    To ensure package versions are taken from package-lock.json, use npm ci instead of npm install.

    • npm ci installs packages based on package-lock.json

    • npm install may update package versions in package.json

    • Always commit package-lock.json to version control

  • Answered by AI
  • Q4. Create an object and write a function inside it.
  • Ans. 

    Creating an object with a function inside it.

    • Create an object using object literal notation

    • Define a function inside the object using function expression or declaration

    • Access the function using object.method() syntax

  • Answered by AI
  • Q5. Given an array that has stock prices from morning till afternoon. Return the best buy and sell price to gain the max profit. For example, input -> [2,5,8,1,3,6,9,3,6], output -> [1,9]

Interview Preparation Tips

Topics to prepare for Morgan Stanley Backend Developer interview:
  • Node.Js
Interview preparation tips for other job seekers - The questions asked were very basic in Node.JS and mostly a working code/solution was expected and to be able to answer why something works.

Skills evaluated in this interview

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. React questions
  • Q2. Nodejs questions

Interview Preparation Tips

Interview preparation tips for other job seekers - coding is must
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed in May 2024. There was 1 interview round.

Round 1 - Coding Test 

Good dsa to follow array and string

Interview Preparation Tips

Interview preparation tips for other job seekers - Goood

Analyst Interview Questions & Answers

Goldman Sachs user image ArunKeshav Sridhar

posted on 23 Aug 2015

I applied via Campus Placement

Interview Questionnaire 

1 Question

  • Q1. How many ways can a king go from one end of the chessboard to the diagonally opposite square(The king can move only towards the corner and not diagonally)
  • Ans. 

    The king can move only towards the corner and not diagonally. How many ways can a king go from one end of the chessboard to the diagonally opposite square?

    • The king can only move towards the corner, so there are limited options for each move

    • The total number of moves required to reach the opposite corner is 14

    • Using combinatorics, the total number of ways the king can reach the opposite corner is 3432

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: The test was very well designed with seemingly easy questions but which required deep understanding of fundamentals. I really enjoyed the quantitative part and the data analytics part.
Tips: I would suggest that you focus on the parts that you are good at . It is not necessary to do well in every part. So focus on your strengths.
Duration: 90 minutes
Total Questions: 30

Round: Puzzle Interview
Experience: I initially suggested a brute force method to solve this problem , which was correct but the interviewer asked for a smarter way to solve it using permutations. I initially struggled but i finally got the right answer.
Tips: Walk the interviewer through what you are thinking and think of the smartest way to solve it.

Skills: Problem solving abilities
Duration: 2
College Name: IIT Madras

I was interviewed in Sep 2016.

Interview Questionnaire 

2 Questions

  • Q1. Why do you want to join GS?
  • Ans. 

    I want to join GS because of their reputation for excellence and the opportunity to work on challenging projects.

    • GS is known for its prestigious reputation in the financial industry

    • I am attracted to the opportunity to work on complex and challenging projects

    • I admire GS's commitment to innovation and cutting-edge technology

    • I believe GS will provide me with valuable learning and growth opportunities

  • Answered by AI
  • Q2. Questions related to Internal Audit were asked

Interview Preparation Tips

Round: Group Discussion
Experience: I had a good time. Got to know new and valuable additions to Companies Act
Duration: 30 minutes

Round: HR Interview
Experience: It was a great exchange, I really expressed my views and visions well.

Round: Technical Interview
Experience: I was complimented for being calm, confident and patient throughout the interview.

Skills: Technical Knowledge(ML, Ability To Cope Up With Stress, Confidence
College Name: Maharani college

Analyst Interview Questions & Answers

Goldman Sachs user image Devendra Bendkhale

posted on 4 Dec 2015

Interview Questionnaire 

4 Questions

  • Q1. Discussion on one of the project
  • Q2. Given a matrix containing several positive numbers find max path from bottom left to top right using only up and right steps
  • Ans. 

    Find max path from bottom left to top right in a matrix using only up and right steps.

    • Start from bottom left corner and move towards top right corner.

    • At each step, choose the maximum value between the cell above and the cell to the right.

    • Keep track of the sum of values in the chosen path.

    • The final sum is the maximum possible sum of values in a path from bottom left to top right.

  • Answered by AI
  • Q3. Dice rolled several times until sum of outcomes till now comes greater than equal to hundred. What is most likely number to occur as final sum?
  • Ans. 

    The most likely number to occur as the final sum is 100.

    • The sum of the outcomes of the dice rolls will keep increasing until it reaches or exceeds 100.

    • Since the dice have equal probabilities for each outcome, the sum will have a higher chance of reaching 100.

    • The probability of rolling a sum greater than 100 decreases as the sum gets larger.

  • Answered by AI
  • Q4. Cutting three random points on the circle of radius 1 centered at (0,0) . What is probability that point (1,0) lies in longest cut
  • Ans. 

    Finding probability of point (1,0) lying in longest cut of three random points on circle of radius 1 centered at (0,0)

    • The longest cut will be the one that spans the smallest angle between two of the three points

    • The probability can be found by calculating the area of the region where the longest cut includes point (1,0)

    • This can be done by finding the angle between (1,0) and the two other points and using trigonometry to...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: 30 OBJECTIVE QUESTION 90 MIN . QUESTION LEVEL WAS TOUGH. GS Takes their tests very seriously
Tips: Do the section first which are you most famaliar with. They hire on section wise performance.


Skill Tips: Be calm . Approach is important than answer.

Skills: Analytical Skills, Coding Skills, Maths(esp Probability), Algorithm Analysis, Probabiity
College Name: IIT Guwahati

Skills evaluated in this interview

Interview Preparation Tips

Round: Test
Experience: Written test (Cut off: 7): The test consisted of 2 sectionsPart A (60 min): MCQ's with negatives on general aptitude, permutation & combination (P&C) and Probability.Part B (40 min): This was a subjective section. One or two problems on probability/P&C and few problems on data structures and algorithms (we were asked to write code).
Duration: 60+40 minutes

Round: Other Interview
Experience: 22 candidates were selected for interview which consisted of 2 or 3 rounds. First round: They asked me to explain my summer project. In the Second round, a few problems on P&C/Probability and couple of questions on DSA. Final round: An open problem. For example: estimate the population of Mangalore.

General Tips: If you don't know an answer, tell the interviewer the same. Lying would do more harm than good because they definitely know more than us and will find out very easily. It was Challenging and a great learning experience They test your fundamentals and don't ask too many difficult questions.
Skill Tips: If they ask you to explain what you did in your summer internship, explain it in as simple a language as possible so that even a person with no background in the subject will be able to understand it. Don't use complicated terms because they are looking for people who can express themselves well. Prepare for aptitude sincerely. You might neglect it thinking "It's just apti, what can they ask?". The problem will arise when you know how to solve the question but it might take a really long time to work it out. Practice makes a man perfect. For algorithms, code every question you have tried to solve. Interviewers look for people who can write efficient and readable code. ["Use proper names for variables"]. When they ask you a question, they don't expect you to arrive at the exact solution. They look for the structure in your solution i.e have you considered the necessary parameters and does there exist a logical progression from one step to the next. If you are asked an open problem, don't panic. Keep asking questions to get a proper understanding of the problem and try to give them multiple solutions and reason out why each solution might be right or wrong.
Skills: Probability, Apti, Algorithms, Aptitude questions
College Name: NIT SURATHKAL

I was interviewed in Aug 2016.

Interview Preparation Tips

Round: Test
Experience: Aptitude questions which can be found on any website or book were asked which were pretty easy to solve if you have a little bit of practice.
One question related to data structures was asked.
Tips: Go through basic programming concepts as well as aptitude type questions.
Duration: 2 hours
Total Questions: 45

Round: Group Discussion
Experience: It was a topic I had no clue about. I was sandwiched by two people who for some reason seemed like research scholars on that topic. I was quiet throughout most of the discussion. At the end, after simply listening to everyone, I tried to make a sound conclusion and ALAS! I got through the GD round.
Duration: 25 minutes

Round: HR Interview
Experience: Most of the discussion was based on my activities which I had been part of in college.

College Name: Manipal Institute Of Technology, Manipal
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Blackrock Interview FAQs

How many rounds are there in Blackrock Backend Developer interview?
Blackrock interview process usually has 1-2 rounds. The most common rounds in the Blackrock interview process are Technical and Coding Test.
What are the top questions asked in Blackrock Backend Developer interview?

Some of the top questions asked at the Blackrock Backend Developer interview -

  1. Multithreading concepts collect...read more
  2. Spring core, jpa , Microservi...read more

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