Brandon Grey

Led modernization of legacy Patient Access & Scheduling Platform; migrated Web Forms apps to .NET microservices; improved uptime for multi-clinic operations using Clean Architecture, DDD, and CQRS patterns; designed and integrated secure REST APIs for enterprise healthcare workflows; migrated scheduling microservices to AKS with Terraform IaC; established observability via dashboards and tracing; implemented AI-assisted analytics for clinical workflows.

Modernized legacy Patient Access & Scheduling Platform by migrating Web Forms apps to .NET 7 microservices, improving uptime for multi-clinic operations using Clean Architecture, Domain-Driven Design, and CQRS patterns. Engineered horizontally scalable backend services with ASP.NET Core 7, EF Core, Redis caching, and App Service autoscaling to support 50k+ appointment workflows per month. Delivered HIPAA-compliant REST APIs enabling real-time interoperability with EHR ecosystems and third-party providers. Built Azure Functions and event-driven pipelines ingesting 40k+ clinical events per day, enabling real-time triage and provider updates. Architected multi-model data systems across SQL Server, Azure SQL, and Cosmos DB with partitioning, indexing, and tuning for consistency. Rewrote high-impact stored procedures and optimized execution plans, reducing clinician dashboard load times by 65%. Migrated fragmented React screens to Angular 15 with NgRx to unify clinician workflows. Implement

Modernized core payment services by migrating monolithic VB.NET project to React and ASP.NET Core microservices hosted on AWS Lambda, EC2, and Kafka, improving authorization & refund reliability for merchants. Built PCI-compliant REST APIs for transaction authorization, settlement, refunds, and account updates using API Gateway and OAuth 2. Implemented multi-model data solutions with DynamoDB and Amazon RDS, with partitioning and eventual consistency. Built Kinesis-based ingestion pipelines for real-time transaction analysis, fraud detection, and downstream batch processing. Developed high-performance backend logic with Entity Framework Core and Dapper, and built real-time merchant dashboards for monitoring, payout status, and risk scoring. Secured APIs with Cognito/IAM roles and granular permissions, and reduced Redis load by implementing caching strategies to accelerate high-traffic endpoints.