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Blackrock Software Engineer Interview Questions and Answers

Updated 5 Nov 2024

Blackrock Software Engineer Interview Experiences

3 interviews found

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. Asked everything that was present in my resume
  • Q2. DBMS, OOps were asked a lot and react as well
Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in May 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

60 mins and basic quants-based questions along with SQL

Round 2 - Technical 

(2 Questions)

  • Q1. Multi-Threading in Python - GIL
  • Ans. 

    Global Interpreter Lock (GIL) in Python restricts execution of multiple threads at once to prevent race conditions.

    • GIL is a mutex that protects access to Python objects, preventing multiple threads from executing Python bytecodes at once.

    • This means that even in a multi-threaded Python program, only one thread can execute Python code at a time.

    • GIL can limit the performance of multi-threaded Python programs, especially f...

  • Answered by AI
  • Q2. Certifications in my resume - AWS and Ethical Hacking

Interview Preparation Tips

Interview preparation tips for other job seekers - Through your resume well and don't falsify your skills

Skills evaluated in this interview

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Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Coding Test 

They asked you to reverse a palidrome

Interview Preparation Tips

Interview preparation tips for other job seekers - Good place

Interview questions from similar companies

I appeared for an interview before Jun 2016.

Interview Questionnaire 

2 Questions

  • Q1.  Given k and DFS traversal string for a k-ary tree, construct the tree. The String contains P (if a parent) and L (if a leaf). E.g. - k=3, str="PPLLLLL" 2. All the strings are arranged in the following ord...
  • Ans. 

    The question asks to construct a k-ary tree using the given k and DFS traversal string.

    • Iterate through the DFS traversal string

    • If the current character is 'P', create a parent node

    • If the current character is 'L', create a leaf node

    • Link the nodes according to the DFS traversal order

  • Answered by AI
  • Q2. "How would you tell whether a graph has a node with n degree?"
  • Ans. 

    To determine if a graph has a node with n degree, iterate through all nodes and count their edges.

    • Iterate through each node in the graph

    • Count the number of edges connected to each node

    • If any node has n edges, then the graph has a node with n degree

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Questions on C++(Virtual fns, inheritance). Two on probability, 12 on Algorithms
Duration: 45 minutes

Round: Technical + HR Interview
Experience: He asked some more puzzles and some probability (expectation) questions. Then, he modified one question asked in the written test and asked me write code for it on paper.
Tips: First of all, prepare all the questions asked in the test before going for the interviews.


Skills evaluated in this interview

I applied via Campus Placement and was interviewed in Sep 2022. There were 2 interview rounds.

Round 1 - Aptitude Test 

Logic base questions minimum 30

Round 2 - Coding Test 

Two coding questions in one hr

Interview Preparation Tips

Topics to prepare for MNC Group Software Engineer interview:
  • Python
Interview preparation tips for other job seekers - Hr round can give job conform.it should for mnc companies 😉
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Types of garbage collectors
Round 2 - HR 

(1 Question)

  • Q1. Salary negotiation

I appeared for an interview in May 2022.

Round 1 - Video Call 

(1 Question)

Round duration - 45 Minutes
Round difficulty - Easy

The interviewer was friendly. Explained the question well. Allowed to use any preferred platform to write code.

  • Q1. 

    Best Time to Buy and Sell Stock Problem Statement

    Given an array prices representing the prices of a stock where each element indicates the price at a given minute, determine the maximum profit you can ac...

  • Ans. 

    Find the maximum profit by buying and selling a stock once based on given prices.

    • Iterate through the prices array and keep track of the minimum price seen so far and the maximum profit achievable.

    • Calculate the profit by subtracting the current price from the minimum price and update the maximum profit if needed.

    • Return the maximum profit, ensuring it is not negative.

    • Example: prices = [2, 100, 150, 120], Buy at 2, sell a

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

  • Q1. 

    Dance Team Pairing Challenge

    Imagine you are helping Ninja, a dance coach, who needs to form dance pairs from the available boys and girls in a studio. Given the number of boys N, the number of girls M, a...

  • Ans. 

    The challenge involves forming dance pairs from available boys and girls based on potential pairings to maximize the number of pairs.

    • Parse the input to get the number of test cases, boys, girls, and potential pairings.

    • Iterate through the potential pairings and form pairs based on the given indexes.

    • Output '1' if a set of maximum possible pairs is returned, else output '0'.

    • There can be multiple valid configurations of pa...

  • Answered by AI
  • Q2. What is the difference between multiprocessing and multithreading?
  • Ans. 

    Multiprocessing involves multiple processes running concurrently, while multithreading involves multiple threads within a single process.

    • Multiprocessing utilizes multiple processes to execute tasks simultaneously.

    • Multithreading involves multiple threads within a single process sharing the same memory space.

    • Multiprocessing is typically used for CPU-bound tasks, while multithreading is more suitable for I/O-bound tasks.

    • E...

  • Answered by AI
Round 3 - Video Call 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Hard

  • Q1. Can you describe the classes and functions involved in the design of a system like Splitwise?
  • Ans. 

    Splitwise is a system for managing shared expenses among groups of people.

    • Classes: User, Expense, Group

    • Functions: addExpense(), settleUp(), calculateBalance()

  • Answered by AI
Round 4 - Video Call 

Round duration - 60 Minutes
Round difficulty - Hard

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Software Engineer in GurgaonEligibility criteriaNo criteriaTower Research Capital interview preparation:Topics to prepare for the interview - Data Structures and Algorithms, Low level design, High Level Design, Relational Database Management Systems, Operating SystemsTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Practice at least 5 questions of each topic of various difficulty levels
Tip 2 : Read out theory articles about your preferred language showing your proficiency in the same.
Tip 3 : Hard work is overrated, consistency is the key.

Application resume tips for other job seekers

Tip 1 : Own everything you have there, do not add random skills that you are not proficient in.
Tip 2 : Keep it clean and try to give out minimal but most of the relevant information for the role.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. About projects in resume
  • Q2. Resume related questions

Interview Preparation Tips

Interview preparation tips for other job seekers - prepare well and be confident speak properly in the interview

I applied via Walk-in and was interviewed in Nov 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Electronic communication engineering

Interview Preparation Tips

Interview preparation tips for other job seekers - Written test

I applied via LinkedIn and was interviewed in Mar 2022. There were 2 interview rounds.

Round 1 - Aptitude Test 
Round 2 - Coding Test 

Interview Preparation Tips

Interview preparation tips for other job seekers - No I Am Sorry I Don't know for the advice in interview

Blackrock Interview FAQs

How many rounds are there in Blackrock Software Engineer interview?
Blackrock interview process usually has 1-2 rounds. The most common rounds in the Blackrock interview process are One-on-one Round, Coding Test and Aptitude Test.
How to prepare for Blackrock Software Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Blackrock. The most common topics and skills that interviewers at Blackrock expect are Computer science, SDLC, Agile, C++ and Coding.
What are the top questions asked in Blackrock Software Engineer interview?

Some of the top questions asked at the Blackrock Software Engineer interview -

  1. Multi-Threading in Python - ...read more
  2. DBMS, OOps were asked a lot and react as w...read more

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Blackrock Software Engineer Interview Process

based on 3 interviews

Interview experience

4
  
Good
View more
Blackrock Software Engineer Salary
based on 55 salaries
₹10 L/yr - ₹24 L/yr
76% more than the average Software Engineer Salary in India
View more details

Blackrock Software Engineer Reviews and Ratings

based on 2 reviews

3.9/5

Rating in categories

2.0

Skill development

3.1

Work-life balance

2.9

Salary

4.1

Job security

3.9

Company culture

3.0

Promotions

2.0

Work satisfaction

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