Noodle.Ai Data Engineer Interview Questions and Answers

Machine coding round

Q1. TCP/IP related questions, what happens when you search a webpage?
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Q2. Past projects discussions
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Q1. Behavioural questions on how would you tackle a particular scenario
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Q1. Concept of Hoisting in Javascript
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Hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their containing scope during compilation.
• Variable declarations are hoisted to the top of their scope, but not their initializations.

• Function declarations are fully hoisted, including their definitions.

• Hoisting can lead to unexpected behavior if not understood properly.
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Q2. What is arrow function
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Arrow functions are a concise way to write functions in JavaScript.
• Arrow functions are anonymous functions defined using the '=>' syntax.

• They have a shorter syntax compared to traditional function expressions.

• Arrow functions do not have their own 'this' keyword, instead they inherit it from the parent scope.
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Q3. Polyfill of Promise
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Polyfill of Promise is a code that adds Promise functionality to browsers that do not support it natively.
• Polyfill is a piece of code that provides the technology that you expect the browser to provide natively.

• Polyfill for Promise adds Promise functionality to browsers that do not support it, allowing developers to use Promises in their code.

• Examples of Promise polyfills include 'es6-promise' and 'promise-polyfill'.
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Q1. Implementation of carousel
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Implementing a carousel for displaying multiple images or content in a rotating manner.
• Use a library like Slick or Owl Carousel for easy implementation

• Ensure images/content are responsive for different screen sizes

• Add navigation arrows or dots for user interaction

• Consider adding autoplay feature with customizable speed

• Optimize performance by lazy loading images
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General aptitude questions and technical questions

Q1. Array data structure based programming question
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Q2. Object Oriented Programming concepts
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Around 1 hour with 2 coding and few aptitude questions.

Q1. Regarding linked lists
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Q2. Data Structures
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Q1. Given few situations
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Q2. Asked about few other details
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Q1. U still want to work with this company even after knowing that it is going to doom you?
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Basic Js concepts like debouncing,event loop, and other output-based questions.

Q1. Js concepts in depth
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Q1. Hiring manager round, questions around my project
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Q2. Optimization techniques
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Optimization techniques are methods used to improve the efficiency and performance of software applications.
• Use algorithms like greedy, dynamic programming, or divide and conquer to optimize code

• Minimize time complexity by avoiding nested loops and unnecessary iterations

• Utilize data structures like hash tables, arrays, and trees for efficient storage and retrieval

• Profile code to identify bottlenecks and optimize critic...read more
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Q1. It was mostly on scenario based questions and I was asked to code online.
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Q1. Discussion were there past projects, how different objectives were done.
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Q1. System design questions related to the product
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