z/OS Systems programmer

Intrinsic Resolution is seeking an experienced and security-cleared z/OS Systems Programmer for an on-site assignment in Annapolis, MD. This is a mission-critical role supporting the maintenance, configuration, and optimization of an IBM mainframe environment for a federal client. The ideal candidate is an Annapolis-area resident with an Active Secret Clearance and 8+ years of deep, hands-on experience with z/OS internals, subsystem administration, and enterprise-scale mainframe operations.

This position ensures the stability, security, and performance of mainframe systems across production, test, and development environments in a highly regulated, 24x7 operational context. You will serve as a subject matter expert and Tier III escalation point, driving solutions to complex technical challenges and contributing to modernization and automation initiatives., z/OS Installation & Maintenance

• Install, configure, and maintain z/OS and related IBM system software
• Manage SMP/E processes, including PTF and RSU installations
• Maintain PARMLIB/PROCLIB configurations and plan and execute IPLs

Subsystem Administration

• Support and tune subsystems including JES2/JES3, CICS, DB2, MQ, and IMS
• Troubleshoot subsystem issues to ensure performance and continuous availability

Performance & Capacity Management

• Perform workload analysis using RMF and SMF tools
• Tune WLM policies and provide recommendations to optimize CPU, memory, I/O, and storage utilization

Storage & I/O Configuration

• Collaborate with storage teams on SMS/HSM and DASD management
• Support IODF/HCD updates and validate TS7700/VTL replication

Security & Compliance

• Support RACF rules, digital certificates, and access control administration
• Assist with STIG compliance and vulnerability remediation activities
• Ensure system configurations align with applicable regulatory and security standards

Automation & Operations

• Develop automation scripts using REXX, CLIST, and SA/Ops frameworks
• Support job scheduling and integrate with monitoring and alerting tools

Incident & Change Management

• Provide Tier III support for escalated mainframe incidents
• Conduct root cause analysis (RCA) for system and subsystem failures
• Participate in change management processes and disaster recovery testing

Documentation & Collaboration

• Develop and maintain technical documentation, runbooks, and SOPs
• Collaborate with cross-functional teams including security, storage, networking, and application teams
• Contribute to mainframe modernization and cloud integration initiatives

Do you have experience in Technical writing within technology?, Do you have a Bachelor’s degree?, * Active Secret Clearance (required prior to start)

• 8+ years of hands-on experience as a z/OS Systems Programmer
• Deep expertise in z/OS internals, JES2/JES3, WLM, and SMP/E
• Demonstrated experience with one or more subsystems: CICS, DB2, IMS, or MQ
• Proficiency in REXX, JCL, and mainframe utilities
• Knowledge of TCP/IP, VTAM, and network configuration on z/OS
• Experience with disaster recovery, backup/restore, and high availability environments
• Strong diagnostic, analytical, and problem-solving skills
• Excellent written and verbal communication and documentation abilities
• Ability to operate effectively in 24x7 mission-critical environments
• Collaborative team player with a strong focus on quality and system reliability
• Adaptability to emerging mainframe and automation technologies
• U.S. Citizenship required - no exceptions
• Native or bilingual English proficiency

PREFERRED QUALIFICATIONS

• Experience with z/OSMF, Ansible for z/OS, and enterprise automation frameworks
• Exposure to security tools such as zSecure and advanced RACF administration
• Mainframe experience in cloud, MFaaS (Mainframe as a Service), or managed hosting environments
• Familiarity with federal compliance frameworks including NIST, STIG, and RMF
• Bachelor’s degree in Computer Science, Information Systems, or equivalent practical experience, * z/OS: 8 years (Required)
• JES2/JES3, WLM and SMP/E: 5 years (Required)
• • Proficiency in REXX, JCL, and mainframe utilities: 4 years (Required)
• TCP/IP, VTAM, and network configuration on z/OS: 4 years (Preferred)

$150,000 - $170,000 a year - Full-time, Contract, * Competitive salary: $150,000 - $170,000 annually, commensurate with experience

• Potential for long-term engagement on a federal contract
• Professional development and training support
• Work with a mission-driven, veteran-owned firm that values excellence and service

Pay: $150,000.00 - $170,000.00 per year

Intrinsic Resolution, LLC (IR) is a Service-Disabled Veteran-Owned Small Business (SDVOSB) specializing in cleared federal IT staffing and professional services. With a mission rooted in integrity, precision, and service, IR connects highly qualified cleared professionals with critical defense and federal agency missions. We are committed to supporting the warfighter and the national security enterprise by placing the right talent in the right roles.