Maintain and enhance enterprise COBOL mainframe applications (CICS and large-scale batch), troubleshoot production issues, implement fixes and performance improvements, support on-call activities, collaborate with cross-functional teams, and participate in modernization and cloud integration efforts while following development standards and documentation practices.

Provide Tier 1 remote service desk support on Mondays: answer inbound calls and tickets, troubleshoot hardware/software/network/access issues, document incidents in a ticketing system, identify root causes, and escalate unresolved incidents to higher-tier teams.