dotnet Software engineer interview questions

Questions

https://www.fullstack.cafe/interview-questions/ https://www.fullstack.cafe/interview-questions/design-patterns https://www.fullstack.cafe/interview-questions/ddd

Ice breaker :P

• What’s new in .net 6/C#10

  • HTTP/3 with QUIC (quick UDP internet connection)
  • your favorite new feature?

• record type in C#9 https://www.infoworld.com/article/3607372/how-to-work-with-record-types-in-csharp-9.html

Language

• Interface vs Abstract class
• value/reference types. null values. how to create a value type? (struct)
• async/await.
  • why async/await in web api controllers?
• difference between const and readonly
• what is yield.
• Exception handling and logging.
  • Difference between throw and throw ex.
• IQueriable, IEnumerable
• ORM usage: EF, ado.net, maybe Dapper? when to use each
• What is pattern matching?
• Implement a custom ValueType? (Struct)
• What’s a delegate?
• What’s reflexion?

Technologies

• GraphQL
• ORM
  • when to use
• Docker/K8s
• What is docker and when/why to use it? benefits and drawbacks?
• What is k8s? Benefits and drawbacks?
• How to monitor an app in K8s?

Patterns and design

• What does it mean high quality code?
• Patterns? SOLID?
• Dependency Injection
  • Relation between IoC and DI
• DDD
  • Entity vs ValueObject vs Aggregate
  • Pattern you use the most? Factory, Repository
  • Frequent antipatterns? Anemic domain model
  • relation with Microservices?
• clean architecture
• CQRS with mediator
• Patterns
  • Builder
  • Factory
• Composition over inheritance?
• Event sourcing?
• Structure an API project
• DDD: What’s DDD?
  • What issues do Aggregates solve?
  • What’s Bounded Context?
• What’s Behaviour Driven Development?

React

• How to structure a react application
  • any refactor from other framework to react?
• Microfrontend
  • Cómo funcionan?
• Functional components vs Class components
  • which is your prefered and why
• Hooks?

Architecture

• what’s REST API
• design restful API: example cars: * endpoints, * return codes, * versioning
• Event Driven Architecture
  • message vs events vs commands
  • streaming
  • with Microservices
• Microservices vs monolith
  • Benefits and drawbacks
  • Patterns?
• Describe a system you have designed

SDLC

• Trunk based vs Feature branching? Favorite branching strategy?
• Environments?
• package manager
• What’s CI/CD
  • Relation with environments

Agile

• Scrum, Kanban?
• Favorite Scrum ceremony?
• How do you keep up to date with technology?

Tech Lead questions

• How to organize to be able to scale
  • Have visibility and involvement in the critical decisions

Short version

Questions:

• interface vs abstracat
• value vs reference
• async/await
• iquer vs ienum
• what’s delegate:
• patterns ○ examples
• DDD ○ Entity vs Value object 2/5
• Monolith vs uService ○ pros and cons ○ trade offs
• DDD and uService ○ relation 2/5
• CQRS ○
• SDLC ○ how would you setup