Blackhawk Network Senior Software Developer Interview Questions and Answers

Ther try to gaze out what are the responsibilities you handled and your growth potential

They try to find out what you are will do in a given set of scenarios

Q1. They tell you about the company
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Q2. They ask about your flexibility with working pattern
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Q1. Questions about C# language features
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Q2. Azure functions and other services
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Q1. DevOps concepts
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Q2. Angular basics
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Leetcode easy level questions

Q1. Eliminate subsequent repetitions in a string
Ans. 
Remove subsequent repetitions in a string
• Iterate through the string and compare each character with the next one

• If they are the same, remove the repetition by shifting the characters to the left

• Repeat this process until all repetitions are eliminated
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Q1. Behavioral questions asked by Delivery Manager
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Q1. Behavioral round and past experience
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Q1. Design a URL shortener
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A URL shortener is a tool that takes a long URL and generates a shorter, more manageable link.
• Generate a unique short code for each long URL

• Store the mapping between short code and long URL in a database

• Redirect users from short URL to original long URL when accessed
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Q2. Write unit test for a sevice class
Ans. 
Unit test for a service class
• Create a test class for the service class

• Mock any dependencies of the service class

• Write test methods to cover different scenarios

• Use assertions to verify the expected outcomes
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Q1. Explain oops concepts
Ans. 
OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOP focuses on creating objects that interact with each other to solve problems.

• Encapsulation: Objects can hide their internal state and require interactions through defined interfaces.

• Inheritance: Objects can inherit attributes and methods from other objects.

• Polymorphism: Objec...read more
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Q2. Write a code on simple one.
Ans. 
Code a simple one
• Use a basic programming language like Python or JavaScript

• Create an array of strings

• Print the array elements
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Q3. Explain about your projects
Ans. 
I have worked on various projects including a web application for tracking inventory and a mobile app for managing tasks.
• Developed a web application using React.js for tracking inventory levels and generating reports

• Created a mobile app using Flutter for managing tasks and setting reminders

• Implemented RESTful APIs for communication between frontend and backend systems
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Q1. Tell me about yourself
Ans. 
I am a software developer with 5 years of experience in Java, Python, and SQL.
• 5 years of experience in Java, Python, and SQL

• Strong problem-solving skills

• Experience working in Agile development environment

• Passionate about learning new technologies
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Q2. Why msg global solutions
Ans. 
I want to work at msg global solutions because of their reputation for innovative solutions and collaborative work environment.
• I am impressed by msg global solutions' track record of delivering cutting-edge software solutions to clients.

• I am excited about the opportunity to work with a team of talented developers and collaborate on challenging projects.

• I value the emphasis msg global solutions places on professional de...read more
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Q1. About the project. and asked what i did in project. how to create schema in pyspark. what is ADE. what are the difficulties i faced in project. what is spark submit command how we write sparksubmit command...read more
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Q2. No of occurrences of letter in a string.
Ans. 
Count occurrences of a letter in a string.
• Iterate through each character in the string and count occurrences of the specified letter.

• Use a hashmap to store the count of each letter.

• Handle both uppercase and lowercase letters to ensure accurate counting.
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30 mins Aptitude Question

30 mins - 3 Coding Question

Q1. Describe Rest API
Ans. 
Rest API is a set of rules and conventions for building and interacting with web services using HTTP methods.
• Rest API stands for Representational State Transfer Application Programming Interface.

• It uses standard HTTP methods like GET, POST, PUT, DELETE to perform CRUD operations.

• RESTful APIs use URLs to access resources, and return data in JSON or XML format.

• Stateless communication allows for scalability and flexibilit...read more
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Q2. What is various Response code. Diffenrence b/w 200 & 201, 400 & 403
Ans. 
Response codes indicate the status of a HTTP request. 200 & 201 are success codes, while 400 & 403 are client error codes.
• 200 - OK: Request was successful

• 201 - Created: Request was successful and a new resource was created

• 400 - Bad Request: The server cannot process the request due to a client error

• 403 - Forbidden: The server understood the request, but refuses to authorize it
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