Hospital Management System — Enterprise Health Core

A hospital runs on data that must be correct, private and instantly available — a scheduling clash or a lost record has clinical consequences. We built an enterprise health core that unifies doctor-patient scheduling, electronic health records, pharmacy inventory and billing into one compliant system, engineered for zero-latency access at the point of care.

An Angular Enterprise frontend serves clinical and administrative workstations. Java Spring Boot microservices own each bounded context — scheduling, records, pharmacy, billing — communicating over Apache Kafka event streams so an appointment, a prescription and an invoice stay consistent without tight coupling. PostgreSQL is the system of record, with HL7 processing to interoperate with lab and device systems.

Healthcare demands both strict consistency and constant availability, plus interoperability with legacy HL7 systems that were never designed to talk to each other. The challenge was an architecture where records are compliant and auditable, schedules never double-book, and the whole thing keeps responding instantly under a full clinic's concurrent load.

• HL7 processing engines that ingest and normalize messages from lab and device systems into the unified record.
• Event-driven scheduling over Kafka that serializes appointment writes to eliminate double-booking while keeping queues live.
• Automated pharmaceutical inventory that decrements on dispense and flags reorder thresholds in real time.
• A secure medical billing subsystem with role-scoped access and an immutable audit trail for every record touch.