Principal Software Engineer Interview Questions

2,045 principal software engineer interview questions shared by candidates

Final, finally Bean Scopes in spring Old Java Design patterns: Proxy, Adapter, Facade How would you implement a singleton? Gotcha Snippets ( == / equals / instanceof and other quirky, autoboxing and unboxing gotcha questions) What would you say if your manager turns your proposal down, says simply "this is not how we used to do things", then refuses to elaborate.
Nov 14, 2025

Final, finally Bean Scopes in spring Old Java Design patterns: Proxy, Adapter, Facade How would you implement a singleton? Gotcha Snippets ( == / equals / instanceof and other quirky, autoboxing and unboxing gotcha questions) What would you say if your manager turns your proposal down, says simply "this is not how we used to do things", then refuses to elaborate.

Viewing 1601 - 1610 interview questions

Glassdoor has 2,045 interview questions and reports from Principal software engineer interviews. Prepare for your interview. Get hired. Love your job.