Mainframe Systems Programmer​/Mainframe Database Administrator; DBA

The Mainframe Systems Programmer / Mainframe DBA is responsible for the installation, configuration, maintenance, performance tuning, security, and availability of IBM z/OS mainframe systems and associated database technologies. This role plays a critical part in ensuring the stability, performance, and reliability of mission critical enterprise applications supported by mainframe environments.

Key Responsibilities

Mainframe Systems Programming

• Install, configure, maintain, and upgrade IBM z/OS operating systems and related system software
• Manage and support core mainframe subsystems including JES2/JES3, SMP/E, RACF, TSO/ISPF, CICS, IMS, DB2, and system utilities
• Monitor system performance and capacity; perform tuning and optimization
• Implement and maintain system automation and scheduling tools (e.g., CA 7, Control M)
• Support disaster recovery, business continuity, and system failover testing
• Diagnose and resolve complex system-level issues and performance problems
• Apply vendor patches, PTFs, and software upgrades following change management procedures

Database Administration (DBA)

• Install, configure, and maintain DB2 for z/OS (and/or IMS DB) environments
• Perform database design reviews, schema changes, and capacity planning
• Monitor database performance and conduct tuning activities
• Manage backup, recovery, and disaster recovery strategies
• Implement database security controls, access permissions, and auditing
• Support data migrations, application releases, and testing activities
• Troubleshoot database availability and integrity issues

Required Skills & Qualifications

Technical Skills

• Strong experience with IBM z/OS mainframe environments
• Hands-on expertise with DB2 for z/OS (IMS experience is a plus)
• Proficiency with SMP/E, JCL, and system-level batch processing
• Knowledge of RACF security administration
• Experience with performance monitoring and tuning tools (e.g., RMF, SMF)
• Familiarity with mainframe storage systems (DASD, tape management)
• Understanding of enterprise change management and ITIL practices

Education

• Bachelor s degree in Computer Science, Information Systems, or a related field
  OR equivalent professional experience

Professional Experience

• 5+ years of experience in mainframe systems programming and/or mainframe DBA roles
• Experience supporting 24x7 mission-critical production environments
• Proven ability to work independently and as part of a cross functional team

Preferred Qualifications

• IBM certifications (e.g., z/OS, DB2 for z/OS)
• Experience with modernization initiatives (mainframe-to-cloud integration, APIs, Dev Ops)
• Familiarity with tools such as Endevor, Changeman, File AID, ISPF utilities
• Knowledge of compliance standards (SOX, PCI, HIPAA, etc.)

Soft Skills

• Strong analytical and problem solving abilities
• Excellent written and verbal communication skills
• Ability to manage multiple priorities in a fast paced environment
• Strong attention to detail and documentation discipline