Prepare for your next .NET backend interview with a practical, structured system.

A 150-page, production-focused preparation system for experienced .NET backend developers—with C# code-review exercises, model answers, system-design cases, database labs, and a structured 14-day plan.

Get the Kit on Gumroad See what’s inside

20 code-review exercises · 50 model answers · 5 system-design cases

System Design Design an URL Shortener
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.NET Backend Interview Prep Kit for experienced backend developers

Scattered preparation creates scattered answers.

Jumping between random videos, outdated posts, and disconnected question lists makes it difficult to know what matters—or whether you can explain it clearly.

A structured system changes that.

Follow a focused path across .NET, data, architecture, code review, and system design—then revise the essentials when the interview gets close.

What’s inside

One kit. The core areas that experienced backend interviews actually test.

01

C# and modern .NET

Core language concepts, async programming, memory, collections, dependency injection, Entity Framework Core, and runtime behavior.

02

ASP.NET Core APIs and architecture

REST API design, gRPC, clean boundaries, integration choices, resilience, and the trade-offs behind your decisions.

03

PostgreSQL and NoSQL

Hands-on database labs covering indexing, PostgreSQL performance, transactions, caching, query decisions, and database selection.

04

Backend system design

Five practical cases that help you clarify requirements, propose a design, and discuss reliability and scaling trade-offs.

05

C# code review and testing

Twenty realistic code-review exercises, maintainability issues, refactoring decisions, and pragmatic testing strategies.

06

Interview practice and revision

Fifty model answers, a 14-day preparation plan, mock interview scorecards, and quick-revision sheets for the final stretch.

Built for active preparation

Don’t just collect answers. Practice explaining the reasoning.

The kit is designed to help you move from “I recognize this topic” to “I can explain it, compare alternatives, and defend a decision” in mid-level and senior .NET developer interviews.

  • Review the concept and its practical context
  • Work through realistic questions and scenarios
  • Identify gaps before the interview does
  • Use quick-reference material for final revision
2. SYSTEM DESIGN

Design an URL Shortener

Start by clarifying requirements, scale, and constraints before selecting components.

API→Service→Store

Key discussion points

This kit is for you if…

  • You already build backend applications with .NET
  • You’re preparing for mid-level or senior-level interviews
  • You want a focused path instead of more browser tabs
  • You need to strengthen how you explain technical decisions

It may not be the right fit if…

  • You’re completely new to C# and backend development
  • You want memorized one-line answers without context
  • You’re looking for a guaranteed interview outcome
  • You only need preparation for frontend-focused roles

Created from experience, not theory alone

Built by Mohammad Rahmeh, a senior software engineer with 9+ years of experience.

I’ve spent more than nine years building and supporting enterprise .NET applications, backend services, APIs, integrations, and database-driven systems. I created this kit from the kind of preparation I use myself: practical, structured, and centered on the reasoning experienced backend developers need in technical interviews.

It brings together the subjects that are easy to study separately—but difficult to connect and explain under interview pressure.

Learn more about Mohammad’s experience

Frequently asked questions

Know what you’re getting before you buy.

Who is this kit designed for?

It is designed for .NET backend developers preparing for mid-level and senior-level technical interviews. It assumes you already understand the fundamentals of C# and backend development.

Is this a beginner’s programming course?

No. It is an interview preparation resource, not a step-by-step course for learning C# or .NET from scratch.

How will I receive the kit?

Your purchase and digital delivery are handled securely through Gumroad. Follow the download instructions shown after checkout.

Can I use it at my own pace?

Yes. You can work through the sections in order or focus on the areas most relevant to your upcoming interview.

Stop preparing randomly.
Start preparing with a system.

Build clearer answers, uncover weak spots, and walk into your next .NET backend interview with a plan.

Get the Kit on Gumroad