Tietoevry Lead Software Engineer Interview Questions and Answers for Experienced

Q1. Ways to send data from JCL to COBOL
Ans. 
Data can be sent from JCL to COBOL using parameters, files, or shared memory.
• Passing parameters through JCL PROC statement

• Writing data to a file in JCL and reading it in COBOL program

• Using shared memory to communicate between JCL and COBOL
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Q2. What are cursors?
Ans. 
Cursors are database objects used to retrieve data from result sets one row at a time.
• Cursors are used in database management systems to navigate through a result set.

• They allow for processing individual rows of a result set instead of fetching the entire set at once.

• Cursors can be used in SQL queries to perform operations on each row of a result set.
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Q3. Checkpoint in Db2
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Checkpoint in Db2 is a mechanism used to ensure data consistency during recovery.
• Checkpoints are used to write all modified data from the buffer pool to the disk.

• They help in reducing the amount of work needed during database recovery.

• Checkpoints can be triggered manually or automatically based on configuration settings.
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Q1. Overall experience
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Q1. Dsa questions related to project
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Q2. Project based q and a
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Q1. Questions about oops, about your tech stack, some generic dsa questions.
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Q1. A DSA question based on Linked List. Find the longest common suffix of 2 linked lists. for eg-> 1 ->8 -> 9 -> 7 -> 3 -> 2 -> 6 4 -> 8->5->7-> 3-> 2 -> 6, given the head of both linked lis...read more
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Q1. Implement LFU cache in Java. Questions on Java, Spring, microservices and my current project discussion.
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Q1. Managerial round
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Q1. Java 8 interview questions
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Q2. Spring boot questions
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Q1. Microservices strurcture and implementation
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Technical round followed by HR

Q1. Oops concepts ,c#,SQL
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Q2. Basic programming skills
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Q1. About your techical and professional background
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Q1. General java, android and basic kotlin questions
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Q1. Same and details about projects you did
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Q1. Salary discussion
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Q1. Dedendency Injection - How it's works.
Ans. 
Dependency Injection is a design pattern where the dependencies of an object are provided externally rather than created within the object itself.
• Dependencies are injected into a class through constructor injection, setter injection, or interface injection.

• This helps in achieving loose coupling between classes and makes the code more testable and maintainable.

• Example: Instead of creating an instance of a database conne...read more
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Q2. Transient vs Scoped lifetime service - if one is transient and other is Scoped will this work?
Ans. 
Yes, a combination of transient and scoped lifetime services can work together.
• Transient services are created each time they are requested, while scoped services are created once per request within the scope.

• They can work together as long as the transient service does not depend on the scoped service for its functionality.

• For example, a logging service can be transient while a database context service can be scoped.
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Q3. Async and await
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