Flexible path32 sections

.NET Backend

Backend-focused .NET interview preparation.

A backend-focused .NET preparation path covering C#, ASP.NET Core APIs, data access, reliability, testing, and practical coding.

Recommended start

C# OOP & Type Design Essentials

Objects, encapsulation, abstraction, interfaces, inheritance, composition, polymorphism, access boundaries, construction, immutability, equality, and collaboration.

15 drillsSection 1 of 32

Open section Browse all drills

Choose your interview focus

Short on time? Jump to the area most relevant to your next interview.

Or follow the full path below

C# fundamentalsObjects, types, language behavior, and design choices.ASP.NET Core APIsRequest pipeline, DI, routing, and API behavior.Data accessEF Core, query design, transactions, and SQL.

Learning path

32 active sections / 491 drills

1C# OOP & Type Design EssentialsRecommended startObjects, encapsulation, abstraction, interfaces, inheritance, composition, polymorphism, access boundaries, construction, immutability, equality, and collaboration.15 drillsSection 1Open section 2C# & .NET Language EssentialsValue and reference behavior, structs, boxing, generics, delegates, LINQ execution, nullability, exceptions, reflection, closures, iterators, collections, pattern matching, and extension methods.12 drillsSection 2

.NET Backend

C# OOP & Type Design Essentials

Choose your interview focus

Learning path

Skill areas