Senior Mainframe Systems Programmer – IBM z/OS, CICS, MQ

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DNI (Delaware Nation Industries)

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2015

🤝 B2B

🔒 Cybersecurity

B2B • Construction • Cybersecurity

DNI (Delaware Nation Industries) is a wholly-owned tribal organization based in Oklahoma, focused on utilizing tribal advantages to implement non-gaming business strategies that foster financial independence for the Delaware Nation. With a mission to empower its members and employees, DNI provides a diverse range of services, including enterprise IT, cabling, lighting, construction, and security solutions tailored for government and commercial clients. The company is committed to delivering high-quality services that exceed expectations, leveraging their experience in federal projects and compliance with strict regulatory standards.

📋 Description

• 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