What you'll learn:
- Design principles, patterns & advanced C#. 250+ interviews conducted — I know what's asked. Don't memorize, understand.
- Learn what's really asked in C# interviews — based on 250+ real technical interviews, not textbook theory.
- Master advanced C# topics that interviewers love: events, reflection, pattern matching, nullable reference types, and more.
- Apply design principles and 5 popular design patterns — understand when and why to use each one.
- Understand C# collections in depth — know the differences and trade-offs interviewers expect you to explain.
- Practice with 10 in-browser coding exercises to reinforce what you've learned — no setup needed.
- Get two free e-books — one with all mid-level answers, one reviewing junior-level fundamentals just in case.
- Study on the go with printable flashcards and an Anki deck — review key concepts anywhere, anytime.
Why this course?
I've conducted over 250 technical interviews as a .NET Technical Lead. I know what interviewers ask, how they evaluate answers, and what separates a "good enough" response from one that actually impresses.
This course teaches you exactly what you need for a mid-level C# interview. We go through 50 essential questions in depth, plus 100 bonus questions — 150 real-world questions total. Each one is explained so you understand why the answer is correct, not just what to say.
What makes this course different?
Most interview prep courses are question dumps — here's the question, here's the answer, memorize it. This course takes a different approach:
We learn by coding. Topics are explained with hands-on examples, and the course includes 10 in-browser coding exercises to reinforce your understanding.
We go deep. Each topic is broken down so you can handle follow-up and trick questions with confidence.
We cover what actually gets asked. The questions in this course are based on real interviews, not pulled from a textbook.
What's inside?
8 hours of video covering the advanced topics interviewers expect mid-level candidates to know:
Advanced C# mechanisms — reflection, the dynamic keyword, pattern matching, nullable reference types
Design principles and best coding practices — with real-world reasoning, not just definitions
5 popular design patterns — when and why to use each one
C# collections in depth — differences, trade-offs, and the follow-up questions interviewers love to ask
Events, lambda expressions, and more — the topics that separate junior answers from mid-level ones
Included with the course
Two free e-books — one with all mid-level questions and answers, one reviewing 15 essential junior-level topics (just in case you need a refresher)
Printable flashcards + Anki deck — study on the go, anywhere, anytime
Full Git repository with all the code from the lectures
10 in-browser coding exercises to practice as you learn
Coming from the junior level?
No problem. This course picks up where junior-level knowledge ends. And just in case there are any gaps, a free e-book reviewing 15 essential junior-level topics is included — so you can get up to speed before diving into the advanced material.
Not preparing for an interview right now?
That's fine too. Many students take this course to deepen their understanding of C# and fill knowledge gaps. Interview questions are a great framework for learning — they force you to think about the "why" behind every concept, which makes you a better programmer regardless of whether you have an interview coming up.
This course is covered by Udemy’s 30-day Refund Policy, so you can try it out risk-free.
