Engineering learning platform

Overview

An engineering learning platform with mobile and desktop apps, a dashboard for managing content and students, and courses with protected video. I worked on the backbone of the system: the backend that powers the apps and the dashboard that runs them.

The challenge

• A legacy system on .NET Framework 4.8, with a constantly growing user base.
• Technical debt that slowed new features and caused bugs.
• Paid content that needed protection against leaks.

What I did

• Upgraded to .NET 8: migrated from .NET Framework 4.8 with no disruption students could notice.
• Refactored the codebase: a clean, modular structure (Clean Architecture, SOLID) that cut technical debt and eased maintenance.
• APIs for every client: built and optimized the APIs used by the mobile app, the desktop app and the dashboard.
• Protected paid content: a Bunny Stream integration with signed URLs that block direct access to videos.
• Dashboard & analytics: improved the admin dashboard and made admin operations faster.
• Error monitoring: global exception handling and centralized logging (Serilog).
• Server operations: ran the Linux server with Docker and backups.

Tech stack

• .NET 8
• ASP.NET Core
• Entity Framework
• SQL Server
• Angular
• SignalR
• Serilog
• JWT
• Bunny Stream
• Docker
• Linux

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