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BlackNGreen Backend Developer Interview Questions and Answers
BlackNGreen Backend Developer Interview Experiences
1 interview found
Anonymous
I was interviewed in Sep 2021.
(2 Questions)
Round duration - 30 Minutes
Round difficulty - Easy
She asked me two problem one was on string and second one was on Linked List. and then she asked some topics from DBMS as Normalization, Keys and Query of getting second highest salary.
- Q1.
Reverse Linked List Problem Statement
Given a singly linked list of integers, return the head of the reversed linked list.
Example:
Initial linked list: 1 -> 2 -> 3 -> 4 -> NULL
Reversed link... - Ans.
Reverse a singly linked list of integers and return the head of the reversed linked list.
Iterate through the linked list and reverse the pointers to point to the previous node instead of the next node.
Keep track of the previous, current, and next nodes while reversing the linked list.
Update the head of the reversed linked list as the last node encountered during the reversal process.
- Q2.
Reverse Words in a String: Problem Statement
You are given a string of length
N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o... - Ans.
Reverse words in a string while handling leading, trailing, and multiple spaces.
Split the input string by spaces to get individual words
Reverse the order of the words
Join the reversed words with a single space in between
Handle leading, trailing, and multiple spaces appropriately
Interview Preparation Tips
Tip 1 : Practice 20-30 question of String to get the overall working of string program
Tip 2 : Linked List questions was asked
Tip 3 : Practicing SQL queries is must
Tip 1 : Go through your projects technology very well because direct questions was from there
Tip 2 : Try to make sure if you mentioned anything in your resume then you should be having decent Idea of those things then only mention.
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Akansha Nagpal
Selected
I applied via Naukri.com and was interviewed before Oct 2023. There were 2 interview rounds.
(2 Questions)
- Q1. Basic questions about projects
- Q2. Design a get api .
- Ans.
Design a GET API to retrieve user information.
Define the endpoint for the API (e.g. /users/:id)
Include query parameters for filtering (e.g. /users?role=admin)
Return user data in JSON format
Handle errors gracefully (e.g. return 404 if user not found)
(2 Questions)
- Q1. Similar to first round based on project i have worked on my previous company.
- Q2. Write a post APi
- Ans.
To create a post API for a backend system
Define the endpoint for the API (e.g. /posts)
Set up the HTTP method (e.g. POST)
Handle the request data and process it accordingly
Implement the necessary validation and error handling
Return a response with the appropriate status code and data
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.
(2 Questions)
- Q1. Can you provide a basic self-introduction?
- Ans.
I am a backend developer with 5 years of experience in building scalable and efficient web applications.
5 years of experience in backend development
Proficient in languages like Java, Python, and Node.js
Strong understanding of database management systems such as MySQL and MongoDB
Experience in building RESTful APIs and microservices
Familiar with cloud technologies like AWS and Azure
- Q2. Which project you working right now and what are the challenges
- Ans.
I am currently working on a project to develop a new e-commerce platform for a client.
Implementing secure payment gateways
Optimizing database queries for faster load times
Integrating third-party APIs for shipping and inventory management
I was interviewed in Mar 2017.
Interview Questionnaire
8 Questions
- Q1. Basics of networking
- Q2. Data structures
- Q3. Sql
- Q4. Introduction
- Q5. Final year project
- Q6. Why should I hire you?
- Ans.
I have the technical skills, experience, and passion to deliver high-quality software solutions.
I have a strong background in programming languages such as Java, Python, and C++.
I have experience working on complex software projects and collaborating with cross-functional teams.
I am passionate about staying up-to-date with the latest technologies and trends in software development.
I am a quick learner and have a strong...
- Q7. Why Ericsson?
- Ans.
Ericsson is a global leader in telecommunications technology with a strong focus on innovation and career development.
Global leader in telecommunications technology
Strong focus on innovation
Opportunities for career development
- Q8. About relocation
Interview Preparation Tips
Experience: The test which I wrote was based on cocubes. quants was easy, one can easily score 50 percent if they refer rs agarwal and logical was easy but it takes more time and verbal was neither easy nor tough. One thing I want to advice try doing verbal first so that u can save time and then go to quant and logical. After the test we got the results out of 160 students 51 cleared the test. I was one among them.
Duration: 45 minutes
Total Questions: 45
Round: Technical Interview
Experience: Keep ur cool in the technical. people are friendly. Think before you answer twice they may ask u puzzles as well. So be prepared for it. Final year project is a must, they are gonna ask u the details how you implement stuffs in your project. After my technical out of 51 students around 30 cleared this round. I was one among them.
Round: HR Interview
Experience: Don't be scared guys. Hr is just a casual one. finally around 15 were selected from my college including me. I am very happy with the result. best of luck guys. Do well!!!
Tips: Keep your cool. stay confident that's all I can tell. Once you clear technical one can easily clear Hr round.
Skills: Communication, Technical Skill
College Name: JSS Academy of Technical Education - JSSATE
Interview Questionnaire
4 Questions
- Q1. Write a C code for printing Febonacci Series upto n elements
- Ans.
C code for printing Fibonacci Series upto n elements
Declare three variables to store the current, previous and next numbers in the series
Initialize the previous and current variables to 0 and 1 respectively
Use a loop to print the next number in the series by adding the previous two numbers
Loop should run n times to print n elements in the series
- Q2. Question related to family background
- Q3. What are your hobbies?
- Q4. What are your strengths and weaknesses?
Interview Preparation Tips
Experience: Questions were from easy to moderate level. No negative marking, so attempt all.
Tips: Keep your mind open and practice aptitude problems on a daily basis.
Round: Group Discussion
Experience: There were 21 students selected out of which two teams of 10 and 11 students were formed. Both the groups were given a topic and each one of us had to express our views.
Tips: Don't get nervous, just speak whatever you think. Don't yell or speak at loudly, just keep calm and put your points forward.
Duration: 20 minutes
Round: Technical Interview
Experience: Apart from the above questions some puzzles and DBMS questions and a few basic C questions were also asked. We were given enough time to think and answer.
Tips: Do not be in a hurry. Think properly what you are going to say, whether it is right or not and then only answer.
Round: HR Interview
Experience: The HR round was a good one. He tried to test my thinking capabilities and reasoning capabilities
Tips: Answer every question honestly.
General Tips: All the four rounds were elimination rounds and the final result was announced based on cumulative performance. So, be patient and give your best.
Skill Tips: Try to answer every properly
Skills: IQ, Basic Coding Skills, Problem Solving Skills
College Name: NIT ALLAHABAD
Motivation: The company visited our college campus. Also, one of my relatives in in Ericsson at a very high post and is quite happy working here.
Skills evaluated in this interview
I applied via Naukri.com and was interviewed before Jun 2020. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. Linux servers questions, past experience tools amd technologies
Interview Preparation Tips
I applied via Referral and was interviewed before May 2020. There were 5 interview rounds.
Interview Questionnaire
1 Question
- Q1. More on oops and design patterns
Interview Preparation Tips
I applied via Job Fair and was interviewed in Apr 2024. There were 2 interview rounds.
Basic questions about coding
(2 Questions)
- Q1. Basic hr questions
- Q2. Salary discussion
Pratyush Garg
Selected
I applied via Campus Placement and was interviewed before May 2023. There were 2 interview rounds.
(1 Question)
- Q1. Basic DSA round
(1 Question)
- Q1. Past projects and skills
Charul Vig
It has basic aptitude question
If you unable to clear apti then there is a option for GD
(2 Questions)
- Q1. Basic question on technical stuffs are asked This is the L1 round. If u clear this then u go to L2 round.
- Q2. Oops, Dsa, Dbms, Html,Css
(1 Question)
- Q1. This the final technical round which is called the L2 round
(1 Question)
- Q1. The HR focus on your communication skills and why u want to join the company and personal stuffs.
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