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McKinsey & Company Senior Software Engineer Interview Questions and Answers

Updated 6 Jun 2024

McKinsey & Company Senior Software Engineer Interview Experiences

2 interviews found

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

(2 Questions)

  • Q1. What are services in Drupal?
  • Ans. 

    Services in Drupal are reusable objects that perform specific functions, such as database queries or sending emails.

    • Services are defined in YAML files and can be accessed throughout a Drupal site.

    • They are used to encapsulate reusable functionality and promote code reusability.

    • Examples of services in Drupal include the database service for interacting with the database, the mail service for sending emails, and the logge

  • Answered by AI
  • Q2. How to debug in Drupal?
  • Ans. 

    Debugging in Drupal involves using tools like Devel module, watchdog(), and error logs.

    • Enable Devel module for debugging information

    • Use watchdog() function to log messages to Drupal's watchdog log

    • Check error logs for PHP errors and warnings

    • Use dpm() function to print variables for debugging purposes

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Selected Selected
Round 1 - Coding Test 

Questions are asked from hackerrank . Difficulty level medium .
Prepare for SQL too.

Round 2 - Technical 

(1 Question)

  • Q1. Your projects, system design

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I applied via Recruitment Consultant and was interviewed in Dec 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Basics of redux and react es6 js css3

Interview Preparation Tips

Interview preparation tips for other job seekers - First of all go through the job description .Brush up all your basics .And do practice hands on coding.

I was interviewed before Dec 2020.

Round 1 - Video Call 

(4 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round consisted of questions from DS/Algo , OOPS and Operating Systems primarily usage of some basic UNIX commands .

  • Q1. 

    Kth Largest Number Problem Statement

    You are given a continuous stream of numbers, and the task is to determine the kth largest number at any moment during the stream.

    Explanation:

    A specialized data st...

  • Ans. 

    Design a data structure to find the kth largest number in a continuous stream of integers.

    • Design a specialized data structure to handle an indefinite number of integers from the stream.

    • Implement 'add(DATA)' to incorporate integers into the stream's pool.

    • Implement 'getKthLargest()' to retrieve the kth largest number from the pool.

    • Maintain the pool of numbers and return the kth largest number for each query.

    • Ensure effici

  • Answered by AI
  • Q2. What is an interface?
  • Ans. 

    An interface in software engineering is a contract that defines the methods that a class must implement.

    • Defines a set of methods that a class must implement

    • Provides a way to achieve abstraction and multiple inheritance

    • Helps in achieving loose coupling between classes

  • Answered by AI
  • Q3. Can you explain the SOLID principles in Object-Oriented Design?
  • Ans. 

    SOLID principles are a set of five design principles in object-oriented programming to make software designs more understandable, flexible, and maintainable.

    • S - Single Responsibility Principle: A class should have only one reason to change.

    • O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

    • L - Liskov Substitution Principle: Objects of a superclass should be replaceable...

  • Answered by AI
  • Q4. Can you explain piping in Unix/Linux?
  • Ans. 

    Piping in Unix/Linux allows the output of one command to be used as the input for another command.

    • Piping is done using the '|' symbol

    • It helps in connecting multiple commands together to perform complex operations

    • Example: ls -l | grep 'txt' - This command lists all files in long format and then filters for files with 'txt' in their name

  • Answered by AI
Round 2 - Video Call 

(5 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round had questions revolving around OS , Selenium and some common concepts from DBMS. The interviewer was quite experienced and made the whole interview quite wholesome for me.

  • Q1. Can you explain any 5 essential UNIX commands?
  • Ans. 

    Essential UNIX commands include ls, cd, pwd, mkdir, and rm.

    • ls - list directory contents

    • cd - change directory

    • pwd - print working directory

    • mkdir - make directory

    • rm - remove files or directories

  • Answered by AI
  • Q2. How do you enable Actuator in a Spring Boot application?
  • Ans. 

    To enable Actuator in a Spring Boot application, you need to include the Actuator dependency in your pom.xml file and configure it in the application.properties file.

    • Include Actuator dependency in pom.xml file

    • Configure Actuator endpoints in application.properties file

    • Access Actuator endpoints to monitor and manage the application

  • Answered by AI
  • Q3. What is dependency injection?
  • Ans. 

    Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.

    • Allows for easier testing by providing mock dependencies

    • Promotes loose coupling between components

    • Improves code reusability and maintainability

    • Examples: Constructor injection, Setter injection, Interface injection

  • Answered by AI
  • Q4. What are Self-Join and Cross-Join in the context of database management systems?
  • Ans. 

    Self-Join is when a table is joined with itself, while Cross-Join is when every row from one table is combined with every row from another table.

    • Self-Join is used to combine rows with other rows in the same table.

    • Cross-Join generates a Cartesian product of the two tables involved.

    • Self-Join is typically used to compare rows within the same table, like in hierarchical structures.

    • Cross-Join is used when there is no common

  • Answered by AI
  • Q5. What are views in SQL?
  • Ans. 

    Views in SQL are virtual tables that are generated based on the result set of a SELECT query.

    • Views are saved SELECT queries that can be treated as tables.

    • They can simplify complex queries by storing them as a view.

    • Views do not store data themselves, but display data from the underlying tables.

    • They can be used to restrict access to specific columns or rows of a table.

    • Views can be used for data abstraction and security p

  • Answered by AI
Round 3 - HR 

(2 Questions)

Round duration - 30 Minutes
Round difficulty - Easy

This is a cultural fitment testing round .HR was very frank and asked standard questions. Then we discussed about my role.

  • Q1. Why should we hire you?
  • Q2. Why are you looking for a job change?

Interview Preparation Tips

Eligibility criteriaAbove 2 years of experienceCapgemini interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Java , Selenium , Spring Boot, OOPSTime required to prepare for the interview - 3 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 interviewSelected

Skills evaluated in this interview

I applied via Naukri.com and was interviewed before Jun 2021. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Basic Python questions
  • Q2. Difference between tuple and list
  • Ans. 

    Tuple is immutable and ordered while list is mutable and ordered.

    • Tuple uses parentheses while list uses square brackets.

    • Tuple is faster than list for accessing elements.

    • Tuple can be used as keys in dictionaries while list cannot.

    • Tuple is used for heterogeneous data while list is used for homogeneous data.

    • Tuple is used for returning multiple values from a function.

  • Answered by AI
Round 2 - HR 

(1 Question)

  • Q1. Mostly compensation and perks

Interview Preparation Tips

Interview preparation tips for other job seekers - If you are at 2-4 YOE looking for python development/ test role. Its quite easy to get into CG, just brush up on basics and go for it. They offered me almost 80% hike from previous company.

Skills evaluated in this interview

I was interviewed before Sep 2020.

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview is standard. Mainly tests the conceptual level knowledge. Java multithreading might be asked if the candidate mentions it. Multi threading concepts are appreciated and gives an edge

Interview Questionnaire 

1 Question

  • Q1. Tell something that you never faced in an interview untill now?

I applied via Naukri.com and was interviewed in Apr 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Questions on java spring boot, java 8 new features with examples, core java questions on generics and garbage collection.

Interview Preparation Tips

Interview preparation tips for other job seekers - Knowledge on microservices and java 8 is necessary

I applied via Recruitment Consulltant and was interviewed before Jul 2021. There were 3 interview rounds.

Round 1 - Aptitude Test 

Cocubes Test Task 1 is of Aptitude questions needs to be completed in Specific time interval and Task 2 is Essay Writing to be finished in Given interval

Round 2 - HR 

(1 Question)

  • Q1. Are you ready to Relocate
  • Ans. Yes I am relocate and flexible with any location
  • Answered Anonymously
Round 3 - Coding Test 

L1 Exam should be cleared L 1 exam is of multiple choice questions and completely related to Java J2Ee Spring

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for co cubes Aptitude and All the best

I applied via Walk-in and was interviewed in Jul 2019. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Main focous on java and selenium.if you have devops knowledge then good to have..
  • Q2. Framework design,oops concept, challange you face,roles and responsibilities,agile concept etc...

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident, focous on core Java,do good practice to identify elements, analyse the things before you respond,be more practical,raise the concern once you stuck,try to find the solution from your end before you ask for Help,...
Contribute & help others!
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McKinsey & Company Interview FAQs

How many rounds are there in McKinsey & Company Senior Software Engineer interview?
McKinsey & Company interview process usually has 1-2 rounds. The most common rounds in the McKinsey & Company interview process are Technical and Coding Test.
How to prepare for McKinsey & Company Senior 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 McKinsey & Company. The most common topics and skills that interviewers at McKinsey & Company expect are API, AWS, Cloud, Finance and Java.
What are the top questions asked in McKinsey & Company Senior Software Engineer interview?

Some of the top questions asked at the McKinsey & Company Senior Software Engineer interview -

  1. What are services in Drup...read more
  2. How to debug in Drup...read more
  3. Your projects, system des...read more

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