Architecture

Backend Architecture Patterns

Reusable production architecture patterns with proof from healthcare, fintech, SaaS, AI, hardware-adjacent, and cloud delivery work.

Architecture pattern

Clean Architecture Backend

Layered APIs with thin HTTP surfaces, application use cases, domain invariants, infrastructure adapters, and persistence boundaries.
APIApplicationDomainInfrastructurePersistenceExternal Systems
  • Decarbonia multi-tenant backend
  • FiberFits API
  • KrbFly tire lifecycle platform
  • CleanArchitecture.Extensions packages

Architecture pattern

Integration Facade

Stable consumer contracts over messy upstream systems, with tenant-aware gateways, cached mappings, validation, and forensic logging.
Consumer APIFacadeMapping DBGatewayAudit LogUpstream Systems
  • Memorial hospital middleware
  • Healthcare appointment/e-result facade
  • Onsa bank/SMS/SOAP integrations

Architecture pattern

OpenAI Async Pipeline

Queue-backed AI processing with structured outputs, worker isolation, lifecycle state, and real-time user feedback.
Meal EntryQueueWorkerOpenAI JSON SchemaPersistenceSSE Updates
  • FiberFits meal analysis
  • Decarbonia OpenAI integration

Architecture pattern

Browser-to-Hardware Bridge

Web UI actions mapped to local hardware capabilities without unsafe browser plugins or server roundtrips.
Portal UIJS BridgeWinForms HostCamera/Scanner/PrinterMedia PipelineBackoffice
  • VeriSoft kiosk client
  • Merchant media upload and offline cache

Architecture pattern

Cloud-Native Delivery

Deployment and validation flow across Azure App Service, Docker, Kubernetes/OpenShift, Linux, Nginx, and CI/CD.
CIContainer/ImageConfigRuntimeSmoke TestsTelemetry
  • Decarbonia Azure App Service
  • Cleverpace Docker/k8s
  • IsBank UAT/PreUAT validation
  • FiberFits Linux deployment