HubBroker ApS Interview Questions and Answers

Hacker Rack Test with medium to high difficulty

Q1. Explain your current project
Ans. 
I am currently working on developing a mobile application for tracking fitness goals and progress.
• Developing a mobile app using React Native

• Implementing features such as goal setting, progress tracking, and workout logging

• Integrating with wearable devices like Fitbit for data synchronization
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Q2. Questions about kakfa, ES and Java 8
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Q1. Similar questions on your current project and questions around kafka
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Basic Coding Java and algorithm questions

Q1. Create basic react app with dummy data fetched from JSON API
Ans. 
Create a basic React app with dummy data fetched from a JSON API.
• Set up a new React project using create-react-app

• Create a component to fetch data from a JSON API using fetch or axios

• Display the fetched data in the component
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Q2. Array methods and Flatten array
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Q3. Event loop
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Q4. HTML and Javascript basics
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LLD about Order Notification System

Q1. HLD of Zoomcar and discussing Tradeoff and some Behavioural Questions
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Q1. Interview with VP of Engineering general discussion
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Normal Aptitude and Basics of the Computer Core Questions

Q1. Tell about Yourself
Ans. 
I am a software developer with 5 years of experience in developing web applications using Java, Spring Boot, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring Boot, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment

• Passionate about learning new technologies
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Q2. Write the code abt the right binary tree?
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Q1. Normal Hr Questions
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Q1. SQL Questions - Constraints- how to optimize long SQL query without changing the output
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Q1. How does your typical day begin?
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Q2. What is the difference between Agile and Waterfall methodologies?
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Q1. Can you describe your past experience as a business analyst?
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Q1. Knowledge about API, ERP, SAP, DBMS, RDBMS, Joins, Normalisation, Codd Rules, Relational Algebra. May ask based on two given tables.
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Q2. JSON, XML, OAuth, REST API, SOAP, GraphQL, HTTP Methods
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Q3. HR questions, basic background, knowledge about B2B, B2C, e-commerce,
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Q1. Details on project, API, procedures of API, knowledge on e-commerce, business aspects of your own projects, Core DBMS, RDBMS, Difference between SQL and NoSQL
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Q2. May give 2 tables and check whether they are normalised or not. If not what should be done. Join them using left join or right join.
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Q3. API, Types of Auth tokens (OAuth, Google Auth, JWT)
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Q4. Procedures of ERP
Ans. 
Procedures of ERP involve defining business processes, configuring the system, testing, training, and ongoing support.
• Define business processes to align with ERP system capabilities

• Configure the ERP system based on defined processes

• Test the system to ensure functionality and data accuracy

• Provide training to users on how to use the ERP system effectively

• Offer ongoing support for system maintenance and troubleshooting
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Aptitude test is based on logical questions and small programs

Q1. All basics of core java and whatever you written in resume. ask about the your last projects. difference between then map, array list, collection, set etc.
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Q2. General questions about the andorid studio. ask some logical questions
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Q1. This will be HR round. general hr questions
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Q1. Question based on CV
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1 hour - NodeJS Based

Q1. High Level System Design
Ans. 
High level system design involves creating an overall architecture for a software system.
• Identify the main components of the system

• Define the interactions between the components

• Consider scalability, reliability, and performance

• Use diagrams to visualize the design

• Example: Designing a social media platform with user profiles, posts, and messaging functionality
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Q1. Low Level System Design
Ans. 
Low level system design involves designing the internal components of a software system.
• Focus on the architecture of the system at a detailed level

• Consider how different components interact with each other

• Optimize for performance and efficiency

• Think about scalability and maintainability

• Examples: designing a database schema, creating algorithms for data processing
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Q1. Culture Fit Round - Strength, Challenges etc
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