Leonard User

I am a Senior Software Engineer with 8+ years building high-scale, cloud-native .NET platforms for finance and healthcare. I focus on reliability, performance, and secure-by-default architectures across distributed systems and SaaS products.

I have deep expertise in C#, .NET Core/.NET 8, SQL Server, REST APIs, and event-driven microservices using Azure services such as Functions, App Service, Service Bus, Event Grid, Storage, Key Vault, and AKS. I design CI/CD pipelines, infrastructure as code with Terraform, and observability with Datadog and Application Insights.

I drive measurable impact through performance and reliability improvements—examples include API latency reductions, database performance tuning, and zero-downtime release practices. I mentor engineers in DDD/CQRS, testing strategies, secure API design, and operational best practices.

I seek to contribute technical leadership, hands-on engineering, and cross-team collaboration to deliver secure, scalable systems while fostering continuous improvement and delivery excellence.