Senior Dbfor z​/OS Systems Programmer

Advance how our customers operate while you advance your career. Join GDIT as a Senior Db2 for z/OS Systems Programmer and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.

The Senior Db2 for z/OS Systems Programmer is responsible for performance, availability, and lifecycle management of Db2 for z/OS subsystems supporting high-volume, mission-critical Medicaid and healthcare systems. They operate in a large-scale data sharing environment with heavy distributed (DDF) workloads, strict audit controls, and 24x7x365 availability requirements.

As a Senior Db2 for z/OS Systems Programmer, the work you’ll do at GDIT will be impactful to the mission of our customers. You will play a crucial role via the following:

• Analyze DDF activity, connection pooling, and thread usage
• Tune buffer pools, EDM pool, and memory usage
• Resolve locking, latching, and concurrency issues
• Identify performance degradation and implement solutions
• Provide proactive performance recommendations

• Develop daily/weekly/monthly reports using SMF/RMF data
• Analyze CPU utilization, transaction volumes, and workload trends
• Highlight anomalies and emerging risks
• Translate technical metrics into user-friendly reports for leadership

• Install and configure Db2 subsystems and tools
• Apply RSUs, PTFs, and HIPER maintenance
• Execute Db2 version upgrades aligned with IPL windows
• Perform validation and ensure system stability post-upgrade

• Participate in DR exercises ensuring full system recovery
• Validate image copies and backup integrity
• Ensure recoverability of all critical table spaces
• Support audit requirements and documentation

• Lead root cause analysis for system and performance issues
• Investigate DDF spikes, CPU anomalies, and contention issues
• Collaborate with application, storage, and z/OS teams
• Interface with IBM support when needed

• Create and manage Service Now change records
• Ensure proper approvals and scheduling
• Communicate changes to stakeholders
• Maintain compliance with production standards

• Daily monitoring of Db2 subsystem health and performance metrics
• Review and distribute performance reports to stakeholders
• Investigate anomalies such as DDF spikes or CPU increases
• Coordinate with application teams on performance issues
• Prepare and implement maintenance or changes
• Participate in meetings related to DR, upgrades, or production issues

Education:

Bachelor of Arts/Bachelor of Science in Computer Science or related field

Experience:

10+ years of related experience

• Strong expertise in data sharing and DDF environments
• Experience with SMF/RMF analysis and performance tuning
• Proficiency with SAS and Excel for reporting
• Deep knowledge of Db2 internals and architecture
• Experience with Omegamon
• Working knowledge of the following: ZOS, MVS, SMPE, TSO ISPF, SDSF, IFCID, SQL, EXPLAIN, Cobol, Db2 Connect, Bind, Catalog, Db2 Utilities

• Ability to provide on‑call support 24x7 due to potential outage penalties
• Capacity for off‑hours work for maintenance and upgrades

Remote

Comprehensive benefits and wellness packages, 401(k) with company match, competitive pay and paid time off. Pay for full‑flex work weeks.

$136,000 - $184,000

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans