Mainframe Programmer

Key Responsibilities

• Maintain, support, and enhance legacy mainframe applications supporting the MNR Crew Management System.
• Monitor and troubleshoot daily batch jobs, interfaces, and workflows to ensure stable and reliable system operations.
• Load and validate new crew schedules within CMS.
• Diagnose and resolve production issues to prevent operational disruptions across connected systems.
• Manage data interfaces between CMS and other MTA systems, including Kronos (payroll) and PeopleSoft.
• Oversee data extracts that feed into the enterprise data lake and downstream reporting environments.
• Develop, modify, and generate operational and regulatory reports for FRA, IG, and additional stakeholders.
• Ensure accurate, timely delivery of critical data to downstream systems.
• Develop the strategy and execution plan for migrating historical CMS data into the new, modern Crew Management System.
• Validate migrated data to ensure completeness, accuracy, and readiness for future operational use.
• Collaborate with IT, business teams, and modernization project leadership to ensure seamless transition.
• Perform routine system maintenance and enhancement work to ensure optimal performance and uptime.
• Support business continuity by documenting processes, workflows, and integrations.
• Provide knowledge transfer and system expertise to IT team members and project stakeholders.

Required Qualifications

• 10+ years of experience in application development, preferably supporting mainframe environments or legacy enterprise systems.
• Strong understanding of batch processing, interface workflows, and data integrations.
• Experience with operational reporting and regulatory reporting requirements.
• Ability to troubleshoot complex production issues under time sensitive conditions.
• Experience supporting mission critical or operationally sensitive systems.
• Familiarity with large scale data migration efforts is strongly preferred.