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Java Technical Lead Interview Questions

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405 java technical lead interview questions shared by candidates

1st Technical consist of question like:- 1.) Design pattern- GOF, Singleton, Builder, Factory ect. 2.) A simple java program used for sorting. 3.) Aggregation vs Composition 4.) Core java questions-- String pool, prepared statement, heap, Maps, Hashing. etc. Both Client Round was scenario based and only Multi Threading was asked:- It was tough for me as i had never worked on multi threading. Was of same level.
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Java Lead

Interviewed at Genpact

3.7★
Aug 21, 2019

1st Technical consist of question like:- 1.) Design pattern- GOF, Singleton, Builder, Factory ect. 2.) A simple java program used for sorting. 3.) Aggregation vs Composition 4.) Core java questions-- String pool, prepared statement, heap, Maps, Hashing. etc. Both Client Round was scenario based and only Multi Threading was asked:- It was tough for me as i had never worked on multi threading. Was of same level.

They focused mainly on scalable Java backend architecture, microservices design, concurrency handling, performance optimization, system design decisions, and experience leading development teams in production environments.
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Lead Java Developer

Interviewed at Viber

4.5★
May 27, 2026

They focused mainly on scalable Java backend architecture, microservices design, concurrency handling, performance optimization, system design decisions, and experience leading development teams in production environments.

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