Lead Software Engineer Interview Questions

2,137 lead software engineer interview questions shared by candidates

1. Fetch data from api and display using axios 2.How to pass data from child to parent 3. How to improve performance of React application 4. Explain Redux workflow 5. Explain useeffect 6. Custom Events and Custom Hooks 7. useeffect vs useMemomo vs useCallBack 8. What is webpack? 9. Destructuring of Object 10. Few simple coding questions on array and object
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Lead Software Engineer

Interviewed at Persistent Systems

4.1
Apr 28, 2023

1. Fetch data from api and display using axios 2.How to pass data from child to parent 3. How to improve performance of React application 4. Explain Redux workflow 5. Explain useeffect 6. Custom Events and Custom Hooks 7. useeffect vs useMemomo vs useCallBack 8. What is webpack? 9. Destructuring of Object 10. Few simple coding questions on array and object

1. First Technical Round All basic JS, NodeJs question like event loop, OAuth , How JWT works, Asynchronous vs synchronous, Promises Async await , promises types, methods, some basic db question, program for char occurence . ( around 1 hr ) 1. Second Technical Round ( with senior architect and Project Manager ) All above question asked with cross question why this why that and asked deployment process in current project, some performance related questions, 2 DSA program, reduce vs map, why nodejs is synchronous (around 1.5 hr) 3. HR Round - Salary discussion
avatar

Lead Software Engineer

Interviewed at Persistent Systems

4.1
Jul 4, 2025

1. First Technical Round All basic JS, NodeJs question like event loop, OAuth , How JWT works, Asynchronous vs synchronous, Promises Async await , promises types, methods, some basic db question, program for char occurence . ( around 1 hr ) 1. Second Technical Round ( with senior architect and Project Manager ) All above question asked with cross question why this why that and asked deployment process in current project, some performance related questions, 2 DSA program, reduce vs map, why nodejs is synchronous (around 1.5 hr) 3. HR Round - Salary discussion

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