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Blackrock Senior Software Engineer Interview Questions and Answers

Updated 1 Oct 2024

Blackrock Senior Software Engineer Interview Experiences

3 interviews found

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

Few basics of java
Dsa question

Round 2 - Technical 

(2 Questions)

  • Q1. Java multithreading questions
  • Q2. Spring boot questions.
Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
-
Result
Not Selected

I applied via Company Website and was interviewed in Apr 2024. There were 2 interview rounds.

Round 1 - One-on-one 

(1 Question)

  • Q1. Longest Increasing Subsequence
  • Ans. 

    Find the length of the longest increasing subsequence in an array.

    • Use dynamic programming to solve this problem efficiently.

    • Iterate through the array and keep track of the longest increasing subsequence ending at each index.

    • Example: For array [10, 22, 9, 33, 21, 50, 41, 60, 80], the longest increasing subsequence is [10, 22, 33, 50, 60, 80] with length 6.

  • Answered by AI
Round 2 - One-on-one 

(1 Question)

  • Q1. UseEffect polyfill

Skills evaluated in this interview

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

(1 Question)

  • Q1. Frequency of character in string
  • Ans. 

    The question is asking about how to find the frequency of each character in a given string.

    • Iterate through the string and count the occurrences of each character

    • Store the counts in a data structure like a hashmap or array

    • Return the counts for each character

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. Reverse a string
  • Ans. 

    Reverse a given string

    • Create a new empty string to store the reversed string

    • Iterate through the original string from end to start and append each character to the new string

    • Return the reversed string

  • Answered by AI

Skills evaluated in this interview

Interview questions from similar companies

I applied via Naukri.com and was interviewed before Aug 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. I was asked based on scenarios, all were practical questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Please don't join as a contractor. Join only if you are permanent with Deloitte.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Medium leetcode question on array list

Round 2 - One-on-one 

(4 Questions)

  • Q1. Core java and collections, exceptions and threading
  • Q2. Core java collections
  • Q3. Multi threading
  • Q4. Executor framework
Round 3 - One-on-one 

(1 Question)

  • Q1. Threading related questions
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Company Website and was interviewed before Feb 2023. There were 5 interview rounds.

Round 1 - Aptitude Test 

Hacker rank coding round - string and array - medium to hard

Round 2 - Technical 

(1 Question)

  • Q1. DSA Round with a focus on strings and trees questions
Round 3 - Technical 

(2 Questions)

  • Q1. UI coding round
  • Q2. Quesitons on JS, TS, Angular and React
Round 4 - Technical 

(2 Questions)

  • Q1. System Design Round
  • Q2. HLD and LLD for Zomato (Food Delivery App)
Round 5 - HR 

(2 Questions)

  • Q1. Culture Fitment Round
  • Q2. General Techno Managerial Questions
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Basic java questions and 2 DSA medium level problems
  • Q2. Two sum leet code problem
Round 2 - Technical 

(1 Question)

  • Q1. Design round. Design a system that send notification’s to all the passengers of trains just when the train arrives at the station next to it. And one question on tree LCA
  • Ans. 

    Design a system to send notifications to train passengers when the train arrives at the next station.

    • Use GPS tracking to determine train location in real-time

    • Implement a notification system that sends alerts to passengers' devices

    • Integrate with train schedule data to know when the train is approaching the next station

  • Answered by AI
Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Hackathon Test with 2 medium level coding question.

Round 2 - Coding Test 

Technical Video Interview- Java concepts mostly related to Java 8, 1 coding program and some db questions were asked.

Round 3 - Technical 

(1 Question)

  • Q1. Questions related to System Design.
Round 4 - Behavioral 

(1 Question)

  • Q1. Questions related to my projects . Some questions related to my current role and responsibilities.

I applied via Recruitment Consulltant and was interviewed in Sep 2021. There were 4 interview rounds.

Round 1 - Coding Test 

Competitive Programming

Round 2 - Technical 

(1 Question)

  • Q1. Java Basics, and related framework basics in depth
Round 3 - Technical 

(1 Question)

  • Q1. Design Patterns and Design Principles
  • Ans. 

    Design patterns and principles are essential for creating maintainable and scalable software.

    • Design patterns are reusable solutions to common software problems.

    • Design principles are guidelines for creating software that is easy to maintain and extend.

    • Examples of design patterns include Singleton, Factory, and Observer.

    • Examples of design principles include SOLID, DRY, and KISS.

  • Answered by AI
Round 4 - Behavioral 

(1 Question)

  • Q1. How you make yourself up to date with latest technologies
  • Ans. 

    I stay up to date with the latest technologies by attending conferences, reading tech blogs, and participating in online forums.

    • Attending conferences and tech events

    • Reading tech blogs and articles

    • Participating in online forums and communities

    • Taking online courses and tutorials

    • Experimenting with new technologies in personal projects

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Work on your basics , prepare for Competitive Programming rounds, Design Principles, Patters and System Design related stuff.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Mar 2023. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Basic java and angular questions
Round 2 - Coding Test 

Basic technical question on finding duplicate alphabets in a string

Round 3 - HR 

(1 Question)

  • Q1. What is your plan 5 years down the line, how to resolve conflict in the team
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Blackrock Interview FAQs

How many rounds are there in Blackrock Senior Software Engineer interview?
Blackrock interview process usually has 2 rounds. The most common rounds in the Blackrock interview process are Technical, One-on-one Round and Coding Test.
What are the top questions asked in Blackrock Senior Software Engineer interview?

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

  1. Frequency of character in str...read more
  2. Longest Increasing Subseque...read more
  3. Reverse a str...read more

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Blackrock Senior Software Engineer Interview Process

based on 3 interviews

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3.3
  
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Blackrock Senior Software Engineer Salary
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₹12 L/yr - ₹44 L/yr
78% more than the average Senior Software Engineer Salary in India
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