Full-stack .Net 9 Clean Architecture (Microservices, Modular Monolith, Monolith), Blazor, Angular 19, React 19, Vue 3.5, BFF with YARP, NextJs 15, Domain-Driven Design, CQRS, SOLID, Asp.Net Core Identity Custom Storage, OpenID Connect, EF Core, OpenTelemetry, SignalR, Background Services, Health Checks, Rate Limiting, Clouds (Azure, AWS, GCP), ..