Egon Zehnder International Big Data Engineer Interview Questions and Answers

Q1. How team works in your project?
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It depends on the region, for me they conducted tool test in the 1st round.

Q1. Technical questions on previously done projects
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Q2. About software and tool proficiency
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Q1. Oops and dbms were asked
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Q2. All oops concepts were asked
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Q1. Lifecycle hooks of Angular
Ans. 
Angular lifecycle hooks are methods that allow you to tap into specific points in a component's lifecycle.
• ngOnChanges: called when an input property changes

• ngOnInit: called once the component is initialized

• ngDoCheck: called during every change detection run

• ngAfterContentInit: called after content (ng-content) has been projected into the component

• ngAfterContentChecked: called after every check of the projected content

• ng...read more
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Q2. SOLID principles
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Q1. Questions on SQL
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Q1. Introduction and basic questions
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MCQ - Logical, AWS, SQL, Python

Q1. Basic Python questions, SQL questions, AWS Questions, Previous project discussion, Day to day responsibilities etc.
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Q1. System design, APIs, projects, products etc.
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Q1. Basic Questions Regarding My Background & Experience.
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Ruby Assignment

Q1. Discussion regarding the submitted assignment, pair programming followed by some technical questions regarding APIs, Architecture, etc.
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Q1. Asked about SAAS, JS questions
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Given a case study need to solve in 2 days

Q1. Explain the case study. Palindrome function in any prog language
Ans. 
A palindrome function checks if a given string reads the same forwards and backwards.
• A palindrome function typically involves reversing the input string and comparing it to the original string.

• Examples: 'racecar' is a palindrome, 'hello' is not a palindrome.

• Common languages for implementing a palindrome function include Python, Java, and C++.
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Q1. General Guidelines
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This round includes an assignment which needs to be completed based on Java, Springboot, REST and any Frontend. They evaluated the case study based on how I write the APIs, how normalised my database is, and how user friendly the UI is.

Q1. How will you add pagination in Spring Boot JPA query?

Ans. 

Use Spring Data JPA's Pageable interface to add pagination in queries.

• Use Pageable interface in repository method signature

• Pass PageRequest object with page number, size, and sorting criteria

• Example: public List findAllUsers(Pageable pageable);

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