Mainframe IMS System Programmer

Job description

Job Description: We are looking for an experienced Mainframe IMS System Programmer to support, maintain, and enhance IBM IMS environments within z/OS. The role covers IMS system administration, database and transaction support, performance tuning, troubleshooting, security, disaster recovery, automation, and collaboration with application and infrastructure teams. Key Responsibilities Install, configure, maintain, upgrade, and troubleshoot IBM IMS and related products in z/OS environments. Manage IMS Control Regions, DBRC, dependent regions, IMSplex components, IMS Connect, databases, transactions, message queues, and related configuration datasets. Support IMS database administration, including backup, recovery, image copies, reorganization, DBRC/RECON management, and database integrity. Configure and maintain IMS transaction processing environments, including MPRs, BMPs, scheduling, routing, workload management, and high-volume transaction support. Support IMS Connect and integration with distributed platforms, TCP/IP, APIs, IBM MQ, CICS, and other enterprise middleware solutions. Monitor and tune IMS system, database, transaction, region, and connectivity performance using tools such as OMEGAMON, MainView, and native IMS facilities. Perform root-cause analysis for IMS system, database, transaction, connectivity, region, and application issues, including dump, log, trace, and SYSLOG analysis. Maintain IMS security and compliance controls, including RACF integration, access troubleshooting, secure communication, audit support, and vulnerability remediation. Develop, maintain, and test IMS backup, restart, recovery, and disaster recovery procedures. Create and maintain JCL, procedures, scripts, automation, technical documentation, implementation plans, and operational standards. Follow ITIL-based incident, problem, change, and release processes; participate in major incidents, production support, and on-call rotations as needed. Collaborate with application, z/OS, CICS, DB2, MQ, storage, network, security, middleware, operations, and architecture teams. Required Qualifications Bachelor’s degree in Computer Science, Information Systems, Engineering, or a related field. 5+ years of experience in IBM IMS system programming and administration in z/OS environments. Strong knowledge of IMS architecture, including Control Regions, DBRC, dependent regions, IMSplex, and IMS Connect. Experience with IMS databases, DBRC/RECON management, backup, recovery, reorganization, and recovery utilities. Hands-on experience with IMS configuration, maintenance, upgrades, troubleshooting, performance monitoring, and tuning. Strong knowledge of z/OS, JCL, JES, TSO/ISPF, SDSF, SMP/E, APAR/PTF management, and IBM software maintenance. Knowledge of IMS transaction processing, message queues, MPRs, BMPs, application regions, IMS Connect, and TCP/IP-based integration. Familiarity with OMEGAMON, MainView, RACF, z/OS security concepts, dump analysis, and root-cause analysis. Strong analytical, troubleshooting, communication, and collaboration skills. Preferred Qualifications IBM IMS certification or equivalent IMS technical training. Experience with IMSplex, CSL, ODBM, OM, RM, shared queues, and high-availability architectures. Knowledge of IBM MQ, CICS, DB2, OTMA, REXX, JCL automation, and mainframe scripting. Experience supporting large-scale production IMS environments, modernization initiatives, API integration, and disaster recovery exercises. At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive. Recruitment fraud is a scheme in which fictitious job opportunities are offered to job seekers typically through online services, such as false websites, or through unsolicited emails claiming to be from the company. These emails may request recipients to provide personal information or to make payments as part of their illegitimate recruiting process. DXC does not make offers of employment via social media networks and DXC never asks for any money or payments from applicants at any point in the recruitment process, nor ask a job seeker to purchase IT or other equipment on our behalf. More information on employment scams is available here .