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BCG Python Fullstack Developer Interview Questions and Answers

Updated 1 Feb 2025

BCG Python Fullstack Developer Interview Experiences

1 interview found

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I was interviewed in Jan 2025.

Round 1 - One-on-one 

(5 Questions)

  • Q1. Basics of Python, Flask, ReactJs, RestApi Development
  • Q2. Python - Difference between is and ==
  • Ans. 

    The 'is' operator checks if two variables point to the same object in memory, while '==' checks if the values of the two variables are equal.

    • Use 'is' to check if two variables reference the same object in memory

    • Use '==' to check if the values of two variables are equal

    • Example: a = [1, 2, 3]; b = a; a is b will return True, a == b will also return True

  • Answered by AI
  • Q3. React - useEffect vs useState
  • Ans. 

    useEffect is used for side effects in functional components, while useState is used for managing state.

    • useEffect is used to perform side effects in functional components, like data fetching, subscriptions, or manually changing the DOM

    • useState is used to manage state in functional components, allowing the component to re-render when the state changes

    • Example: useEffect can be used to fetch data from an API when the compo...

  • Answered by AI
  • Q4. Authentication in RestApi
  • Ans. 

    Authentication in RestApi involves verifying the identity of users before granting access to resources.

    • Use tokens (JWT) for authentication

    • Implement OAuth for secure authentication

    • Utilize session management for user authentication

    • Implement two-factor authentication for added security

  • Answered by AI
  • Q5. React - Pure Component and Higher order components

Interview questions from similar companies

I was interviewed before Sep 2016.

Interview Preparation Tips

Round: Group Discussion
Experience: Interview was scheduled in Grab Job consultancy. In that, a class room, where we all asked to sit and interviewer was sitting in front and asked to speak one by one on the topic traffic situation in Hyderabad.
Tips: Just speak once two to three lines. Don't rush to speak. Take ur time and don't try speak repeatedly.
Duration: 35 minutes

Round: Technical Interview
Experience: System based test. Easy question from java , c, data structure.

Round: HR Interview
Experience: Not held because already we got too late.

Skills: Proficiency In English, Basic Coding
College Name: Medak College of engineering

I was interviewed in Mar 2017.

Interview Questionnaire 

5 Questions

  • Q1. Oops concepts in Java?
  • Ans. 

    Oops concepts in Java

    • Encapsulation - hiding implementation details

    • Inheritance - reusing code and creating parent-child relationships

    • Polymorphism - multiple forms of a method or object

    • Abstraction - creating abstract classes and interfaces

    • Example: Encapsulation - using private variables and public methods

    • Example: Inheritance - creating a subclass that inherits from a superclass

    • Example: Polymorphism - using method overloa...

  • Answered by AI
  • Q2. Altering columns in Databases?
  • Ans. 

    Altering columns in databases involves modifying the structure of a table by adding, deleting or modifying columns.

    • Use ALTER TABLE statement to modify columns

    • Add new columns using ADD COLUMN

    • Delete columns using DROP COLUMN

    • Modify columns using MODIFY COLUMN

    • Changing column data type may result in data loss

  • Answered by AI
  • Q3. Asked some queries in SQL
  • Q4. Reversing a number in java?
  • Ans. 

    Reversing a number in Java

    • Convert the number to a string

    • Use StringBuilder to reverse the string

    • Convert the reversed string back to a number

  • Answered by AI
  • Q5. Extracting words from a line in java?
  • Ans. 

    To extract words from a line in Java, split the line using whitespace as delimiter.

    • Use the split() method of String class

    • Pass the whitespace regex as argument to split() method

    • Iterate over the resulting array to get individual words

  • Answered by AI

Interview Preparation Tips

Round: Technical Interview
Experience: Started with the question "Tell me about yourself". Asked me about Core Java. Asked to solve some questions related to Java and SQL.
Tips: Be prepared with high knowledge in Java, Data Structures and SQL.

Skills: Java Programming, Data Strrutures, SQL
College Name: IIITDM Jabalpur

Skills evaluated in this interview

Software Developer Interview Questions & Answers

Capgemini user image Dwarkesh Maheshwari

posted on 23 Sep 2017

I was interviewed in Sep 2017.

Interview Questionnaire 

1 Question

  • Q1. Basic c questions and sorting Then about projects

Interview Preparation Tips

Round: Test
Experience: Basic apti questions
But reasoning was tricky
Tips: Don't waste time
Duration: 1 hour
Total Questions: 32

Round: Technical test
Experience: Basic c question
SQL questions
Tips: Must have deep knowledge in c

Round: Technical Interview
Experience: Briefly explain my project and then successfully answerd questions asked
Tips: Complete knowledge of your project

College Name: KIET

Interview Questionnaire 

1 Question

  • Q1. What is the advantage of generic collection, when and why we should approach for that?
  • Ans. 

    Generic collections provide type safety and reusability in software development.

    • Generic collections allow us to store and manipulate objects of any type in a type-safe manner.

    • They provide compile-time type checking, reducing the chances of runtime errors.

    • They promote code reusability by allowing the same collection to be used with different types.

    • Generic collections improve performance by eliminating the need for boxin...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: It was and off campus drive, first round was written test on computer as MCQ.
Aptitude, reasoning, English and programming sudo codes.
60 questions 90 minutes.
Duration: 2 hours 30 minutes
Total Questions: 60

Round: Group Discussion
Experience: It was a very interesting round, we were given sufficient time to think about topic.
First we were asked to speak individually on the topic ,later panel member asked is to make same topic as debate.
Tips: Don't sit silent, if you are not getting a chance to speak, you can interrupt to the people and seek a chance to put your point.
Duration: 30 minutes

Round: Technical + HR Interview
Tips: Be confident and tell the exact you know, don't try make customised concepts.
Try to drag interviewer towards the fields of your strength.

I was interviewed before Jun 2016.

Interview Questionnaire 

4 Questions

  • Q1. Tell me something about yourself
  • Ans. 

    I am a passionate software developer with 5 years of experience in web development and a strong background in computer science.

    • 5 years of experience in web development

    • Strong background in computer science

    • Passionate about software development

  • Answered by AI
  • Q2. Questions related to project I have worked on during college days
  • Q3. Core Java concepts
  • Q4. Why do you use two mobile numbers
  • Ans. 

    To separate personal and professional calls, and to ensure availability and accessibility.

    • Separate personal and professional calls

    • Ensure availability and accessibility

    • Maintain work-life balance

    • Avoid mixing personal and work-related contacts

  • Answered by AI

Interview Preparation Tips

Round: Test
Total Questions: 60

College Name: Watumull Institute Of Electronics Engineering And Computer Technology ( WIEECT )

I was interviewed before May 2016.

Interview Questionnaire 

3 Questions

  • Q1. Tell me about your mini project
  • Ans. 

    Developed a web application for tracking personal expenses

    • Used HTML, CSS, and JavaScript for front-end development

    • Implemented Node.js and MongoDB for back-end functionality

    • Included features for adding, categorizing, and analyzing expenses

  • Answered by AI
  • Q2. Tell me about your team work other than project.
  • Ans. 

    I actively participate in team building activities and collaborate with colleagues on various initiatives outside of work projects.

    • Organizing team lunches or outings to build camaraderie

    • Participating in charity events or volunteer work as a team

    • Collaborating on internal initiatives such as diversity and inclusion programs

    • Attending industry conferences or workshops together

  • Answered by AI
  • Q3. How will you convince your client if you are not able deliver the project on time.
  • Ans. 

    I will explain the reasons for the delay and present a plan to mitigate it.

    • Communicate the reasons for the delay clearly and honestly

    • Present a plan to mitigate the delay and ensure timely delivery

    • Provide regular updates on the progress of the project

    • Offer alternative solutions or compromises if necessary

    • Ensure that the client understands the impact of the delay on the project

    • Maintain a professional and respectful attit

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Questions will be from aptitude and vocabulary
Duration: 1 hour
Total Questions: 60

Interview Questionnaire 

1 Question

  • Q1. Totally HR basic questions

Interview Preparation Tips

Round: Test
Experience: Quant LR verbal IQ
Duration: 1 hour

Round: HR Interview
Experience: Related to personal life and activities with achievements etc.

College Name: Tsec

I applied via Campus Placement

Interview Preparation Tips

Round: Test
Total Questions: 100

Round: Group Discussion
Duration: 15 minutes

Skill Tips: Infosys Internship program is structured very similar to Infosys Foundation Program. In both programs, the course is divided into two parts -
Generic Training and Stream Training. Generic Training will be based on Computer Science' fundamental subjects like OOPs using Java, RDBMS using Oracle, Software Engineering, Internetworking and Operating Systems. Stream specific training will be based on a certain technology like J2EE, DOT NET, Mainframe, SAP etc.

If you're unable to pass the internship program, you can join Infosys as a Systems Engineer trainee after you complete your engineering course and can undergo Infosys Foundation Program. Accommodation is free while going through internship program. You need to pay for food and for other amenities like Gym and Sports facilities.
The monthly stipend during internship program is INR 8000. Advantages for opting internship program is Infosys internship program would help you to undergo the initial training course while joining Infosys. So, if you successfully complete the internship program, you need not to attend the Foundation training in Infosys. So, when you rejoin infosys after completing your b.tech course, you would join as an employee, not as a trainee. It will help you get into production much advanced to other people who go through Foundation Program. After you complete your engineering course Infosys will communicate you with a date to rejoin the organization.
After you complete your internship and get posting location. When you rejoin Infosys, you have to report to that office only. Need not to come to Mysore or Mangalore again for reporting.
Once you join for internship program, you have to sign a bond and if you do not opt to rejoin Infosys then you need to consider the consequences as per the rules written in the bond like paying some amount.
One advantage of successfully clearing internship program is that you need not to go through Foundation program in Infosys. Both have equal weightage in Infosys. Scope of learning is same in both type of training.
Skills: Algorithms And Data Structures
Duration: 3
College Name: Government College of Engineering and Technology, Bikaner

Software Developer Interview Questions & Answers

Infosys user image Sarath Kumar Mutnuru

posted on 5 Apr 2016

I applied via Campus Placement

Interview Preparation Tips

Round: Resume Shortlist
Experience: I added the relevant course work and tried to remove the data that is not related to the position seeked
Tips: Make resume more point oriented rather than bulky matter

Round: Technical Interview
Experience: I was very cool and calm at the time of interview and did a ground work of company income and stuff like that
Tips: Be thorough with the concepts you think they would ask

General Tips: be clam and confident. Everythinng will fall in place and its never too late
Skills: Basics Of Machine Learning
Duration: 2
College Name: IIT Madras
Motivation: varied project fields and well planned program
Funny Moments: The call came ,when I was fully out of hope that Infosys would consider me,But I knew I was eligible and deserving
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BCG Interview FAQs

How many rounds are there in BCG Python Fullstack Developer interview?
BCG interview process usually has 1 rounds. The most common rounds in the BCG interview process are One-on-one Round.
What are the top questions asked in BCG Python Fullstack Developer interview?

Some of the top questions asked at the BCG Python Fullstack Developer interview -

  1. Python - Difference between is and...read more
  2. React - useEffect vs useSt...read more
  3. Authentication in Rest...read more

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