Architected and built an enterprise-level, event-driven Notification service from scratch using .NET 9 and PostgreSQL, converting missed recall opportunities into revenue-generating appointments.
Developed nightly data sync cron job to ensure data consistency between TAG Notifications microservice and monolith, processing tens of millions of records with concurrent batch processing and optimized PostgreSQL operations.
Built dedicated Pub/Sub Subscriber worker consuming multiple event types for real-time data synchronization and independent scaling.
Developed .NET Microservice serving different teams' recall exam notification requirements, driving significant revenue increase across the organization.