Senior Db2 for z/OS Systems Programmer

General Dynamics Information Technology

8d • Remote

About The Position

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.

Requirements

• Bachelor of Arts/Bachelor of Science in Computer Science or related field
• 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
• Capability for off-hours work for maintenance and upgrades

Responsibilities

• 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 tablespaces
• 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 ServiceNow 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

Benefits

• 401K with company match
• Medical plan options
• Health Savings Accounts
• Dental plan options
• Vision plan
• Full flex work weeks
• Variety of paid time off plans, including vacation, sick and personal time
• 10 paid holidays per year
• Paid Family Leave program
• Short and long-term disability benefits
• Life insurance
• Accidental death and dismemberment insurance
• Personal accident insurance
• Critical illness insurance
• Business travel and accident insurance

What This Job Offers

• Job Type: Full-time
• Career Level: Senior