José Manuel Casal · Senior Backend .NET

Senior Backend .NET · Freelance Consultant

I design and build .NET backends (APIs and microservices) with a strong focus on performance, data, and cloud deployment.

What I do

Backend APIs and microservices in .NET (ASP.NET Core), pragmatic and maintainable design.
Performance optimization: SQL, service latency, diagnostics and tracing.
CI/CD pipelines and deployment on Azure; structured logging and observability.

.NET 8+ · ASP.NET Core · REST · Microservices · Clean Architecture/DDD

SQL Server · PostgreSQL · MongoDB · Redis

Docker · Kubernetes · CI/CD · Azure App Service · Serilog

.NET 6/8 · Microservices · REST APIs

Integration, refactoring, and observability of backend services in production environments.

.NET Core 3.1 · Docker/K8s · Azure

Optimization of connectors and backend services; deployment and operations.

Azure App Service · Azure SQL · .NET 5 · Swagger

End-to-end API integration and documentation (Swagger/OpenAPI).

Remote (Spain). B2B / freelance engagements. English: professional reading and writing; not fluent in spoken communication.