We are seeking an experienced Senior Mainframe Systems Programmer to support and maintain IBM z/OS environments, with a strong focus on CICS Transaction Server and IBM MQ. This role is responsible for system administration, software installation and upgrades, troubleshooting, performance tuning, security compliance, disaster recovery support, and technical documentation in a secure, highly regulated enterprise environment.
The ideal candidate has deep hands-on experience with IBM mainframe technologies, middleware administration, change and incident management, and supporting mission-critical systems with high availability and operational stability.
Key Responsibilities- Administer, install, configure, upgrade, and maintain IBM z/OS mainframe environments, including CICS Transaction Server, IBM MQ, and related software products
- Perform software installations, migrations, upgrades, patching, and implementation activities across multiple mainframe environments
- Troubleshoot and resolve system abends, outages, and performance issues using logs, traces, dumps, and monitoring tools
- Manage IBM MQ environments, including queue managers, queues, channels, backup processing, and web services administration
- Monitor and tune system and middleware performance to ensure availability, reliability, and operational efficiency
- Support secure and compliant system operations in accordance with cybersecurity and enterprise security requirements
- Develop and execute implementation plans, test plans, recovery plans, and back-out procedures for software and hardware changes
- Coordinate change management, incident management, CAB activities, and cross-functional implementation efforts using approved operational processes and tools
- Create and maintain technical documentation, standard operating procedures, implementation guides, root cause analysis reports, and status updates
- Utilize SMP/E, JCL, TSO/ISPF, REXX, CLIST, COBOL, and related IBM utilities to support administration, automation, and system operations
- Support backup, recovery, and disaster recovery planning, testing, and execution
- Provide technical guidance, mentoring, training, and customer support to project teams, junior staff, and stakeholders
- Collaborate with infrastructure, cybersecurity, application, and operations teams to ensure stable and secure mainframe services
Requirements
- Active Top Secret Security Clearance
- DoD IAT Level II certification required
- Minimum of 8 years of experience in mainframe systems programming, administration, or support
- Bachelor’s degree in Information Technology, Computer Science, Engineering, or a related field, or equivalent combination of experience and training
- Strong hands-on experience with IBM z/OS, CICS Transaction Server, and IBM MQ
- Experience with software installation, upgrades, patching, maintenance, and migration activities in enterprise mainframe environments
- Experience troubleshooting system abends, dumps, traces, and performance issues in production environments
- Working knowledge of SMP/E, JCL, TSO/ISPF, REXX, CLIST, and related IBM mainframe utilities
Skills Required
- Active Top Secret Security Clearance
- DoD IAT Level II certification
- Minimum of 8 years of experience in mainframe systems programming, administration, or support
- Bachelor's degree in Information Technology, Computer Science, Engineering, or related field (or equivalent experience)
- Strong hands-on experience with IBM z/OS
- Strong hands-on experience with CICS Transaction Server
- Strong hands-on experience with IBM MQ
- Experience with software installation, upgrades, patching, maintenance, and migration activities in enterprise mainframe environments
- Experience troubleshooting system abends, dumps, traces, and performance issues in production environments
- Working knowledge of SMP/E, JCL, TSO/ISPF, REXX, CLIST, and related IBM mainframe utilities
- Working knowledge of COBOL
What We Do
DNI (Delaware Nation Industries) is the parent organization for all Information Technology focused businesses owned by the Delaware Nation. Founded in 2014 DNI was created to support the rapid growth of the tribe’s first 8(a) technology firm, Indigenous Technologies, LLC. In 2011 Indigenous Technologies began several teaming partnerships with CSI, LLC. and was awarded 4 prime contracts with federal customers as a result of this arrangement. This partnership continued through the Fall of 2014 when DNI purchased CSI adding its capabilities and past performance to the growing Tribal IT Services division. As a result of this strategic acquisition by the Delaware Nation, CSI became the second Tribally owned technology focused LLC in the Delaware Nation portfolio. The third company under DNI operations is CreativeIT, LLC. CreativeIT is being built with an eye to the future and is focused on developing core competencies which supplement the strong capabilities of its sister organizations. DNI continues to build a strong team of companies, providing an all-inclusive suite of Information Technology services and capabilities to our clients.
