Overview
At a glance
TechInterviewNotes is a public .NET backend interview-preparation product. It combines free technical notes, a library, mock tests, preparation paths, and topic tracks covering areas such as C#, ASP.NET Core, EF Core, SQL, Azure, and system design.
Screenshots
The live product
Real screenshots from the live product, not mockups.
Problem
The challenge
The live product publicly exposes a notes library, mock tests, preparation paths, pricing, login, and focused tracks for .NET backend topics.
Working engineers need preparation material that is easier to prioritise and revisit than an unstructured collection of links.
Solution
How the product solves it
The product organises technical material by topic and preparation track, with mock tests available as a separate practice surface.
- Technical notes library
- Question-focused learning content
- Mock tests
- Preparation paths
- .NET backend topic tracks
- Pricing and login entry points
Proof
What you can verify
- Public notes for .NET backend, SQL, concurrency, architecture, and system-design topics.
- Public library, mock-test, preparation-path, pricing, support, and account routes.
System view
Workflow and public architecture
These diagrams reflect the routes and interactions verified on the public product. They do not infer private infrastructure.
Revise a technical topic
- 1Open the public notes library.
- 2Choose a topic such as dependency injection, async programming, SQL indexing, or system design.
- 3Read the focused interview note.
- 4Return to the library or a preparation track for the next topic.
Verified public architecture
- Engineer device
- HTTPS delivery
- Responsive learning application
- Notes and library routes
- Preparation paths and mock tests
- Account entry point
Technical detail
How it is built
Users and roles
Visitors can read free notes and inspect the available tracks. A login route provides the entry point for account-based features.
- Visitor
- Reads free notes and explores the library, mock tests, preparation paths, and pricing.
- Registered learner
- Uses the login entry point for account-based learning features.
Main user journeys
The public experience supports two complementary journeys: start from an individual technical note or follow a broader preparation track.
Revise a technical topic
- Open the public notes library.
- Choose a topic such as dependency injection, async programming, SQL indexing, or system design.
- Read the focused interview note.
- Return to the library or a preparation track for the next topic.
Choose a preparation track
- Open Prep paths or the track section.
- Choose a role or topic-focused track.
- Follow the related learning material.
- Use mock tests as a separate practice step.
Architecture
The verified public architecture is a responsive learning application delivered over HTTPS, with route-based notes, a library, preparation paths, mock tests, pricing, and a separate login entry point.
Technology stack
- Verified delivery surface
- Responsive web application, HTTPS
- Verified product structure
- Content routes, Learning tracks, Mock-test and account entry points
Implementation details
- Frontend
- Responsive reading interface
- Route-based notes and tracks
- Authentication
- Public login entry point
- Deployment
- Public HTTPS endpoint at techinterviewnotes.com
Key technical decisions
- Offer useful free notes as the first product interaction.
- Separate individual topic discovery from longer preparation tracks.
- Keep mock tests visible as a distinct practice mode.
Security and reliability
- The public product is served over HTTPS.
- Account access begins through a dedicated login route.
Lessons learned
- Free notes give learners a low-friction way to judge content quality.
- A topic library and a guided track solve different preparation needs.
- Technical reading interfaces need strong hierarchy more than decorative UI.
