Experience archiving from at least two of the following source-system families: mainframe (AS/400, COBOL/DB2, VSAM), legacy ERP (SAP ECC, PeopleSoft, JD Edwards, Siebel, Lotus Notes), legacy policy administration / closed-block insurance systems, healthcare EHR, custom RDBMS-based applications. Hands-on or familiarity with Platform 3 (Archon) components – Archon Data Store (ADS) lakehouse, Archon native ETL, Archon Analyzer (source-system discovery), Archon Data Bunker (air-gapped isolation, tokenization), and Archon UI / Trino-Spark-based retrieval.