Demandbase Interview Questions, Process, and Tips

Written test was in python where we have output based questions

Q1. Move zeros to the end of the array
Ans. 
Move all zeros in an array of strings to the end.
• Iterate through the array and move all zeros to the end by swapping with non-zero elements.

• Maintain a pointer to keep track of the position to swap with zeros.

• Example: Input: ['a', 'b', 'c', '0', 'd', '0'], Output: ['a', 'b', 'c', 'd', '0', '0']
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Q1. Experience with Scala
Ans. 
I have 3 years of experience working with Scala in developing backend applications.
• Developed RESTful APIs using Scala Play framework

• Utilized Akka for building highly concurrent and distributed systems

• Worked on data processing tasks using Apache Spark with Scala
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Q2. Experience with Java
Ans. 
Extensive experience with Java programming language
• Proficient in Java programming for over 5 years

• Developed multiple applications using Java, including web applications and desktop applications

• Strong understanding of object-oriented programming concepts in Java

• Experience with Java frameworks such as Spring and Hibernate

• Familiar with Java development tools like Eclipse and IntelliJ IDEA
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Q3. Experience with airflow
Ans. 
Airflow is an open-source platform to programmatically author, schedule, and monitor workflows.
• Airflow is used for orchestrating complex workflows in data pipelines.

• It allows users to define workflows as Directed Acyclic Graphs (DAGs).

• Airflow provides a web-based UI for monitoring and managing workflows.

• It supports various integrations with different systems and tools.

• Example: Using Airflow to schedule ETL jobs for dat
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Q4. Big data project
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Q5. System design discussion
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Basic Excel and Aptitude questions

Q1. Asked me about my projects
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Q2. Asked data analytics functions using Excel
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Q1. Why do I want to leave my job
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Q2. Data analytics using excel
Ans. 
Data analytics using excel involves analyzing and interpreting data using various tools and functions in Excel.
• Use functions like VLOOKUP, SUMIF, and PivotTables to analyze data

• Create charts and graphs to visualize data trends

• Use conditional formatting to highlight important data points

• Perform statistical analysis using Excel's data analysis toolpack

• Clean and organize data using filters and sorting functions
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Q1. Problem solving - LC Medium
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Q1. React, JS advanced questions
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