Senior z/OS Systems Programmer – Hybrid (Active Secret)

PTY TECH, LLC; Maryland; Hybrid; USD 150,000 - 170,000; Full time

Job summary

PTY TECH, LLC is seeking an experienced z/OS Systems Programmer to support, maintain, and enhance the client’s IBM mainframe environment. The role ensures stability, security, and performance of mission-critical systems across production, test, and development environments.

The ideal candidate will have deep expertise in z/OS, subsystem configuration, system tuning, and operational support in a high-security setting.

Responsibilities

• z/OS Installation & Maintenance: Install, configure, and maintain z/OS and related IBM system software; manage SMP/E processes and PTF/RSU installations; maintain PARMLIB/PROCLIB and plan IPLs.
• Subsystem Administration: Support and tune subsystems such as JES2/JES3, CICS, DB2, MQ, and IMS; troubleshoot subsystem issues to ensure performance and availability.
• Performance & Capacity Management: Perform workload analysis using RMF/SMF; tune WLM policies; provide recommendations to optimize CPU, memory, I/O, and storage utilization.
• Storage & I/O Configuration: Work with storage teams on SMS/HSM and DASD management; support IODF/HCD updates; validate TS7700/VTL replication.
• Security & Compliance: Support RACF rules and digital certificates; assist with STIG compliance and vulnerability remediation; ensure configurations align with regulatory standards.
• Automation & Operations: Develop automation scripts (REXX, CLIST, SA/Ops); support job scheduling; integrate with monitoring and alerting tools.
• Incident & Change Management: Provide Tier III support for escalated issues; conduct root cause analysis (RCA); participate in change management and DR tests.
• Documentation & Collaboration: Create technical documentation and SOPs; collaborate with cross-functional teams; assist in modernization and cloud integration initiatives.

Job description

PTY TECH, LLC is seeking an experienced z/OS Systems Programmer to support, maintain, and enhance the client’s IBM mainframe environment. The role ensures stability, security, and performance of mission-critical systems across production, test, and development environments.

The ideal candidate will have deep expertise in z/OS, subsystem configuration, system tuning, and operational support in a high-security setting.