Lead engineer on a HIPAA-compliant Alzheimer's care platform on AWS: real-time messaging, push notifications, and shared care plans for 200+ caregivers and patients. Consolidated three web and mobile codebases into one TypeScript monorepo with a shared component library. Encrypted PHI, audit logging, and role-based access took the platform through an outside HIPAA readiness review with no critical findings. Also built its ML features, a decline-risk model over care-log data and an NLP pipeline that structures clinical notes, and mentored two junior engineers.

Rebuilt a legacy ASP.NET Web Forms real-estate analytics app on Blazor WebAssembly, with page loads about twice as fast. Built the real-time market-data pipeline on SignalR and SQL Server change tracking that streams live pricing to hundreds of concurrent users in under a second, and the shared Blazor component library every dashboard is built on. Property-valuation and market-forecast models retrain nightly on the day's transactions and serve into those same dashboards.

C# / .NET control software for a self-service food kiosk and a robotic cashier, down to the payment-terminal and hardware protocols. Customer ordering app in Xamarin, admin dashboard in ASP.NET Core and Angular. A hardware abstraction layer lets one codebase run on all three machine models, and automated order routing sends each order straight to the right kitchen station.

Multiplayer networking, spatial audio, hand tracking, and in-world interfaces for a VR smart-city simulation in Unity, plus a desktop spectator client for people without a headset. Automated the art pipeline (model import, LOD generation, lighting bakes), so a multi-hour job per scene became one an artist could start and walk away from.