Mainframe Engineer zOS/DB2

Job Description:

Key Responsibilities

• IMS System Administration:
  • Install, configure, and upgrade IMS software and related products.
  • Define and manage IMS system parameters, control blocks, and datasets.
  • Administer IMS subsystems, including control regions, database resource adapters (DRAs), and online terminals.
  • Perform IMS system startup and shutdown procedures.
  • Apply maintenance and PTFs using SMP/E.

• IMS Database Management:
  • Design, create, and maintain IMS databases (HDAM, HIDAM, HISAM, HSAM).
  • Define and manage database segments, fields, and relationships.
  • Implement database backup and recovery procedures using IMS utilities (DFSURDBU, DFSURestore).
  • Perform database reorganization and performance tuning.
  • Monitor database space utilization and manage database growth.

• IMS Transaction Management:
  • Define and manage IMS transactions, programs, and message queues.
  • Configure and support IMS online transaction processing (OLTP) environments.
  • Implement transaction routing and security.
  • Monitor transaction performance and troubleshoot issues.

• Performance Monitoring and Tuning:
  • Monitor IMS system and database performance using monitoring tools (e.g., Omegamon, MainView).
  • Analyze performance data and identify bottlenecks.
  • Implement performance tuning measures to optimize IMS system and application performance.
  • Manage buffer pools, storage, and other system resources.

• Problem Determination and Resolution:
  • Diagnose and resolve IMS system and application problems.
  • Analyze dumps and logs to identify root causes.
  • Work with IBM support to resolve complex issues.
  • Implement corrective and preventive actions.

• Security and Compliance:
  • Implement and enforce IMS security policies and procedures.
  • Manage user access and authorization.
  • Ensure compliance with relevant regulations and security standards.

• Backup and Recovery:
  • Develop, implement, and test IMS database and system backup and recovery strategies.
  • Participate in disaster recovery planning and testing.

• Documentation and Standards:
  • Create and maintain technical documentation, including system configurations, procedures, and standards.
  • Adhere to established ITIL processes and change management procedures.

• Collaboration:
  • Work closely with application development teams to design and implement efficient IMS database solutions.
  • Collaborate with other infrastructure teams (e.g., z/OS, storage, network) to ensure seamless integration of IMS systems.
  • Provide technical support and guidance to application programmers and other IT staff.

Required Qualifications

• Bachelor's degree in computer science, information systems, or a related field.
• 5+ years of experience in mainframe IMS administration.
• Strong understanding of IMS architecture, database administration, and system programming concepts.
• Proficiency in z/OS operating system and JCL.
• Knowledge of IMS performance tuning and optimization techniques.
• Experience with data security and compliance standards.
• Excellent problem-solving and troubleshooting skills.
• Strong communication and interpersonal skills.

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