At Director ERP, I own the architecture, security, and delivery of a multi-tenant SaaS ERP deployed across 9 customer environments. I delivered its commercial SaaS layer, including onboarding, plan quotas, role permission ceilings, and Mastercard MPGS subscription checkout.
I architected an in-app AI assistant on a .NET Model Context Protocol server and expanded it from 10 read-only tools to more than 30 read and draft-write tools. I also engineered permission-scoped access and guardrails that blocked 5 of 5 red-team attacks, backed by 141 passing automated tests.
Previously, I was a core developer at AIY Expert Solutions on automation software serving more than 10,000 clients worldwide, and led the migration of a legacy C# desktop application to Electron and Node.js. At Telepaty Holding, I developed .NET applications for international retail distribution and launched a real-time social platform with chat, a digital wallet, and WebSocket browser extensions.
