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Senior Java Developer Tech Lead Interview Questions

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5,584 senior java developer tech lead interview questions shared by candidates

Create an array list and add duplicates to it and write program to find if it has duplicates. write a sql query to find the second highest salary write sql query to find duplicate mail ids difference between hash map and concurrent hash map about Kafka about stream flow to integrate JPA
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Tech Lead / Sr Java Developer

Interviewed at Infosys

3.6★
Jan 13, 2026

Create an array list and add duplicates to it and write program to find if it has duplicates. write a sql query to find the second highest salary write sql query to find duplicate mail ids difference between hash map and concurrent hash map about Kafka about stream flow to integrate JPA

Live coding + some questions about complexity of the solution. Load balancer. Some extra requirements once you implement the previous ones. Money transfer service, then SQL query of money transfer, then theory about DB mostly (ACID, isolation levels).
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Senior Java Developer

Interviewed at Revolut

4★
Aug 28, 2025

Live coding + some questions about complexity of the solution. Load balancer. Some extra requirements once you implement the previous ones. Money transfer service, then SQL query of money transfer, then theory about DB mostly (ACID, isolation levels).

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