skills
Grouped by purpose. Not ranked.
A star rating would tell you less than the case studies do. The depth is in the backend column: C# and .NET 8 with ASP.NET Core and Entity Framework Core, against SQL Server schemas designed rather than inherited, plus Kafka for events, Redis for cache and SignalR for the paths that have to arrive in real time. Around that sits what it takes to get the work out of the door and keep it there — Azure App Services and Blob Storage, Docker, code review, and enough React to build the interfaces on top, including this one.
Languages
what the work is written in.
Frameworks
where most of the backend work happens.
Frontend
the interfaces on top, including this site.
Architecture
how the services are put together.
Messaging & cache
moving events around, and not recomputing what has not changed.
Cloud & services
getting it out the door and keeping it there.
Database
modelling it, storing it, keeping it fast.
Practices
how the work actually gets done.
None of this is ranked, because the projects say more than a rating would. The Digital Austrian case study is where the .NET, Kafka and SQL Server end of it is load-bearing; the Budgetick case study is the same person shipping a product end to end.