Type of Requisition:

Regular

Clearance Level Must Currently Possess:

None

Clearance Level Must Be Able to Obtain:

None

Public Trust/Other Required:

None

Job Family:

IT Infrastructure and Operations

Job Qualifications:

Skills:

DB2, IBM z/OS, Mainframe Computers

Certifications:

None

Experience:

10 + years of related experience

US Citizenship Required:

No

Job Description:

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

MEANINGFUL WORK AND PERSONAL IMPACT
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 will play a crucial role via the following:

Db2 Performance & Monitoring

• 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

Performance Reporting (SAS / Excel)

• 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

Installation, Maintenance & Upgrades

• 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

Disaster Recovery & Audit Support

• 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

Problem Determination

• 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

Change Management

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

Day in the Life / Weekly Cycle

• 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

WHAT YOU’LL NEED TO SUCCEED
Bring your technology expertise and drive for innovation to GDIT. The Senior Db2 for z/OS Systems Programmer, must have:

● Education: Bachelor of Arts/Bachelor of Science in Computer Science or related field

● Experience: 10+ years of related experience

● Required Technical Skills:

• 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

● Required Skills:

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