Domingo Junior R.

Top Rated backend engineer with 100% Job Success. 5+ years building REST APIs and microservices for banks and insurers: .NET 8 claims services for AmTrust North America (USA) and Quarkus integrations on OpenShift for Banreservas. Available now for new projects, full-time or part-time. WHAT I DELIVER • Backend APIs with .NET 8 / ASP.NET Core: Clean Architecture, SOLID, maintainable code • Java microservices with Quarkus and Spring Boot: REST endpoints, validation, OpenAPI documentation • Enterprise integrations: Apache Camel, RabbitMQ, IBM MQ, Kafka, SOAP to REST modernization, API gateways • SQL performance: query optimization, indexing and execution plans on SQL Server, Oracle and PostgreSQL • Security and auth: OAuth2/OIDC, JWT, Keycloak • Containers and delivery: Docker, Kubernetes, OpenShift, Azure DevOps, CI/CD pipelines • Observability and production support: Dynatrace, structured logging, distributed tracing, incident triage I work in regulated environments where downtime is measured and every change has to be documented and reversible. Fluent English, daily standups with US teams, and responses within 4 hours. Tell me your goal (new API, modernization, performance, integration, or stabilization) and I'll come back with a clear plan delivered in small, reliable iterations.