At Nolock, I build fiscal integrations and middleware for production electronic invoicing systems. I designed protocol translation middleware for AFIP web services, reducing new endpoint integration from weeks to days and removing more than 200 lines of duplicated mobile-client code.
I resolved WSAA access-ticket race conditions with asynchronous mutex locks and in-memory caching, cutting redundant upstream requests by 65% and eliminating peak-hour service downtime. I also implemented X.509 digital signatures and log-sanitization pipelines to support PII compliance.
As a freelance consultant, I delivered an ASP.NET, C#, and SQL Server ERP for a pest-control business, replacing paper workflows and reducing work-order management time by 50%. I also built an encrypted SFTP CLI utility and maintained Linux and Windows infrastructure for four concurrent clients.
I enjoy building real-time systems, including a C#/.NET algorithmic trading engine with WebSocket ingestion, quantitative indicators, sub-80ms average order-execution latency, PostgreSQL and SQLite persistence, Docker deployment, and a live monitoring dashboard.
