Practical expertise with ICD, SNOMED CT, RxNorm, LOINC, and UMLS, including terminology services, value sets, semantic types, ontology hierarchies, concept retrieval and disambiguation, local-code crosswalks, and terminology version management; experience with unit normalization using UCUM or equivalent methods. Build ETL workflows, APIs, and validation controls to harmonize structured EMR fields and NLP outputs, including patient and encounter linkage, units, timestamps, and duplicate records; monitor data quality, throughput, reliability, and model performance, and resolve production issues.