Mainframe Systems Analyst / Interface & Documentation Specialist

For assigned interfaces, provide independently checked source-to-target mappings and an interface inventory covering relevant layouts, element IDs, offsets, lengths, transformations, schedules, dependencies and owners/SMEs. For assigned analysis, provide applicable data-flow and process diagrams, batch/job/file traceability, investigation findings, documented gaps and open questions, and supporting PBIs or follow-on notes. COBOL — Required CICS — Required DB2 — Required JCL — Required VSAM — Required Copybooks/file layouts — Required Systematics RM — Required Systematics IM — Required Systematics IT — Required Systematics GN — Required Systematics ALS — Required Understand end-to-end interfaces, data flows, dependencies, batch processing, source/target systems, and how applications exchange data. — Role requirement Perform field-level source-to-target mapping; validate element IDs, offsets, lengths and transformations; independently verify information rather than copying existing documentation. — Role requirement Trace processing and troubleshoot issues across platforms. — Role requirement Create clear, reusable interface documentation, mappings, process summaries, diagrams, PBIs and supporting artifacts understandable to technical and business partners. — Role requirement Follow files, jobs, reports and dependencies across systems; identify business owners and SMEs; investigate unclear or obsolete processes; work through incomplete information. — Role requirement