Build and maintain secure data ingestion pipelines for healthcare data. Normalize medical data using ICD-10, CPT, SNOMED CT, LOINC, RxNorm. Design and implement EHR integrations and external API connections. Architect backend services, multi-tenant PostgreSQL databases, and HIPAA-compliant infrastructure. Develop semantic search, NLP-driven querying, and relevance-ranking features. Implement RBAC, audit logging, encryption, and other security controls. Integrate third-party services (OAuth, communication tools, notifications). Create automated monitoring, data synchronization, and operational health checks. Collaborate with clinical advisors to refine domain-specific capabilities. Produce clear technical documentation and support compliance needs.