Jyoti Tturbopower Services Senior Engineer Interview Questions and Answers

Hacker Rank test with medium difficulty

Q1. Technical discussion mainly around system design, different architectures, problem solving and coding question may be asked.
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A case study for a problem statement

Q1. Asked to write a program to check whether string is valid or not. String consists of only three kind of special characters "(), [], {}". We need to return true if all special characters are in correct for...read more
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Q2. What is useRef hook used for?
Ans. 
useRef hook is used to persist a mutable value across renders without causing a re-render.
• Used to store mutable values that do not trigger re-renders.

• Commonly used for accessing DOM elements or storing previous values.

• Does not cause a re-render when the value changes.
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Q3. What are the best practices to avoid rerenders and to improve performance
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Use memoization, virtual DOM, and shouldComponentUpdate to avoid unnecessary rerenders and improve performance.
• Implement memoization to store the result of expensive function calls and avoid recalculating them.

• Use virtual DOM to efficiently update only the parts of the UI that have changed.

• Override shouldComponentUpdate to prevent unnecessary rerenders by comparing current and next props/state.
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Q4. What are callbacks, Promises, async await
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Callbacks, Promises, async await are asynchronous programming concepts in JavaScript.
• Callbacks are functions passed as arguments to another function to be executed later.

• Promises are objects representing the eventual completion or failure of an asynchronous operation.

• async await is a syntax for writing asynchronous code that looks synchronous, making it easier to read and maintain.

• Example: Using a callback to handle th...read more
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Write word count program

Q1. Architecture of Spark
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Q2. What is AWS Glue job
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Q1. Tell me about your self
Ans. 
Experienced Senior Executive with a proven track record in leading teams and driving business growth.
• Over 10 years of experience in senior leadership roles

• Strong strategic planning and decision-making skills

• Proven ability to drive revenue growth and increase profitability

• Effective team leader and motivator

• Excellent communication and interpersonal skills
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Q2. How to improve the sales
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To improve sales, focus on customer needs, train sales team, utilize data analytics, and enhance marketing strategies.
• Understand customer needs and tailor products/services accordingly

• Provide regular training and support to the sales team to improve their skills and knowledge

• Utilize data analytics to identify trends, target potential customers, and optimize sales strategies

• Enhance marketing strategies through targeted ...read more
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Q1. Overall Experience
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Q2. Previous Records
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Q3. Going forward hr round
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Q1. Basics Discuss with Employee.
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Q2. Salary
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They will give you written exam like ssc, upsc.

Q1. Relevant to there skill related only.
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Q1. Normal questions and salary negotiation.
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Q1. Short Introduction
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Q2. Experience and salary
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Q1. Introduce yourself
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Q2. Mock call & product pitch
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Q1. Authentication and authorization
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Q2. Solid principles
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