Modernizing complex .NET systems into reliable, scalable software.

This work focused on making real-time patient and device information available within connected healthcare workflows. The integration layer was built with .NET Core on Azure, using HL7 as the data-exchange backbone between 5+ medical devices and EHR systems. An in-house microservice monitoring tool with an admin dashboard (Angular front end) was developed to provide operational visibility into the integration pipeline, ensuring reliable, interoperable information flow across all connected systems.

The legacy application was evolved rather than rewritten. Business-critical rules were reverse engineered from existing behavior, then application logic was simplified and the architecture modernized incrementally, on AWS with C# and .NET against SQL Server, so the system kept working while the foundation improved.

During a high-pressure vaccination rollout, the application needed to reach people quickly. This work led the Twilio integration so the ASP.NET application on Azure could drive SMS notifications directly, keeping a critical notification workflow dependable when it mattered most.

A complex .NET application suffered from memory leaks and code-level bottlenecks that caused crashes after approximately 30,000 document generations. Runtime profiling traced the root cause to ComponentOne third-party controls — dynamically generated nested panels, rich text controls, and labels inside grid cells were not being properly disposed.

Targeted memory management fixes were implemented and validated under sustained load, enabling continuous operation for 36 hours over two days with zero crashes. The application successfully processed 2 million documents without a single failure.

This work also encompassed the ICD-9 to ICD-10 migration mandate (CMS deadline: October 1, 2015), scaling from ~14,000 ICD-9 codes to 69,000+ diagnosis codes and 70,000+ procedure codes across the IntelliDose medication management platform. The effort included system upgrades, Clinical Documentation Improvement (CDI) integration, coder/clinician training, and end-to-end payer testing — achieving full CMS compliance on deadline with improved coding accuracy and reduced claim denials.

This engagement at Kaiser Permanente focuses on the EPECS platform - a genetic clinical research system. The work centered on building an ETL process to synchronize patient data from Epic's Clarity database, creating comprehensive schema documentation that became a reference for research teams, and delivering measurable performance gains (8,000% ETL improvement) while maintaining zero-defect delivery during continuous PDF generation at scale.

This recent engagement involved leading a large-scale government system migration for the Department of Agriculture. The scope covered federal nutrition programs including National School Lunch Program, Summer Food Service Program, Child Care and Adult Food Program, and Special Federal Supplemental Nutrition Program. Technical leadership included managing a 15-member team, overseeing architecture decisions, ensuring data integrity throughout migration and coordinating with government stakeholders to meet compliance requirements.