HARMAN Data Engineer Interview Questions and Answers

Q1. Data engineering related
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Q1. Introduce yourself
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Q2. Expectations
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Q1. Offers and benefits
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Q1. No questions just project submission
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Q1. Basic ques on python and sql
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Q1. Basic ques on resume and sql
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Online python test. 2 to 3 problems. more focused on optimize solution.

A case study provided based graph DB

Tell about AC industry

Q1. Move zeros to end?
Ans. 
Move all zeros in an array of strings to the end while maintaining the order of non-zero elements.
• Iterate through the array and move all zeros to the end while keeping the order of non-zero elements.

• Use two pointers approach to swap elements in-place.

• Example: Input: ['a', 'b', 'c', '0', 'd', '0'], Output: ['a', 'b', 'c', 'd', '0', '0']
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Q2. WHat are AWS services?
Ans. 
AWS services are cloud computing services provided by Amazon Web Services.
• Compute services (e.g. EC2, Lambda)

• Storage services (e.g. S3, EBS)

• Database services (e.g. RDS, DynamoDB)

• Networking services (e.g. VPC, Route 53)

• Machine learning services (e.g. SageMaker)

• Analytics services (e.g. Redshift, Athena)
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Q3. What is dynamodb?
Ans. 
DynamoDB is a fully managed NoSQL database service provided by AWS.
• Fully managed NoSQL database service

• Scalable and high-performance

• Supports key-value and document data models

• Automatically replicates data across multiple Availability Zones for high availability
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Q1. How good are you at stress handling situations?
Ans. 
I am very good at handling stress situations, remaining calm and focused under pressure.
• I have experience working on high-pressure projects with tight deadlines.

• I am able to prioritize tasks effectively and stay organized during stressful situations.

• I have developed strong problem-solving skills that help me navigate stressful scenarios.

• I am able to communicate effectively with team members and stakeholders to manage s...read more
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Q2. Why daikin eloaborate this?
Ans. 
Daikin may elaborate on a topic to provide more detailed information or explanation.
• To provide a better understanding of a complex concept or product

• To address potential questions or concerns from customers

• To showcase the company's expertise and knowledge in the industry
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15 statistical and logical questions

2 easy to medium coding problmes. e.g. swapping the array.

Q1. What is regression ? how it works
Ans. 
Regression is a statistical method used to analyze the relationship between variables and predict outcomes.
• Regression models the relationship between a dependent variable and one or more independent variables.

• It works by finding the best-fit line that minimizes the sum of squared differences between the actual and predicted values.

• Examples include linear regression, polynomial regression, and logistic regression.
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Q2. Questions on recent projects
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Q1. Basic back ground check
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Q1. OOPS concepts with DSA in java
Ans. 
OOPS concepts in Java are principles like Inheritance, Encapsulation, Polymorphism, and Abstraction. DSA involves data structures and algorithms.
• OOPS concepts in Java include Inheritance, where a class inherits properties and behaviors from another class.

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent cla...read more
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Q2. Questions related to resume projects and tech stacks used.
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Q1. Questions related to previous experiences in team oriented internships
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Basic python questions

Q1. Asked to create a power bi dashboard
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Q1. Had coding test on SQL and Python
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