Spotify Android Engineer Interview Questions and Answers

Q1. Introduce yourself
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring Boot, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring Boot, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment
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Data Structures & MCQs on various basic topics

Coding Assignment over a Video Call - LeetCode Word Break problem

Q1. Last Working Day at present Company, Expectations etc
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2 basic questions easy LeetCode.

Q1. One on one with one of the senior engineers. Asked about basics of Java, one easy LeetCode problem
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Interview with 3 people. Focus on basics of Java, Database, Etc

Q1. Easy DSA questions 1-2, Array Strings
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Q2. IOS Questions, Easy to Medium
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Q1. DSA 1-2 Questions Easy
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Q2. Medium ios topics including cacheing, life cycle
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Q1. Behaviour based questions
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Q2. STAR methodology related questions
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Q1. It related to my profile i.e. more on JAVA, Spring, Rest APIs
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Q1. Normal Managerial round with situation based questions
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Q1. Technical + Manegerial Questions
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Basic aptitude and graduation based OS, CN, DAA and DBMS questions

Q1. Psychological warfare, to be honest
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Q1. Questions on DBMS, CN and DAA
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Q1. C# abstraction and encapsulation
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Q2. Reflection and indexers in c#
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Reflection and indexers in C#
• Reflection allows inspecting and manipulating metadata of types, objects, and assemblies at runtime

• Indexers provide a way to access elements of a class or struct using array-like syntax

• Reflection can be used to dynamically access and invoke indexers
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Q3. Difference between ienumerable and iqueryable
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IEnumerable is read-only and forward-only while IQueryable is queryable and can be filtered.
• IEnumerable is used for in-memory collections while IQueryable is used for querying databases.

• IQueryable is more efficient for large datasets as it allows for server-side filtering.

• IQueryable extends IEnumerable and adds additional functionality for querying data sources.

• Example: IEnumerable numbers = new List { 1, 2, 3 }; IQuer
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Q4. Difference between rank and dense rank in c#
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Rank assigns unique numbers to each distinct value, while dense rank assigns consecutive numbers to each distinct value.
• Rank and DenseRank are used to assign a unique number to each distinct value in a sorted list.

• Rank assigns a unique number to each distinct value, but leaves gaps for ties.

• DenseRank assigns consecutive numbers to each distinct value, without leaving gaps for ties.

• In C#, Rank and DenseRank are availabl...read more
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Q5. Difference between function and Stored procedure
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Functions return a value while stored procedures do not.
• Functions are used to perform a specific task and return a value to the caller.

• Stored procedures are used to execute a set of statements and do not return a value.

• Functions can be used in SQL statements while stored procedures cannot.

• Functions can be called from within stored procedures.

• Functions can be used in expressions while stored procedures cannot.
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Q6. Difference between clustered and non clustered index
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Clustered index determines the physical order of data in a table, while non-clustered index has a separate structure.
• Clustered index sorts and stores the data rows in the table based on their key values, while non-clustered index has a separate structure that contains the key values and a pointer to the data row.

• A table can have only one clustered index, while it can have multiple non-clustered indexes.

• Clustered index ...read more
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Q7. Difference between execute scalar and execute nonquery
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ExecuteScalar returns single value while ExecuteNonQuery does not return any value.
• ExecuteScalar is used for retrieving a single value from the database, such as a count or sum.

• ExecuteNonQuery is used for executing SQL statements that do not return any value, such as INSERT, UPDATE, DELETE.

• ExecuteScalar returns the first column of the first row of the result set, while ExecuteNonQuery returns the number of rows affecte...read more
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