DB2 Systems programmer Z/os

Role: DB2 Systems programmer: L3 ( full time)

Location: Bangalore, Noida, Chennai ( Hybrid)

Work Mode: Hybrid

Client: HCL

Payroll: Teceze

Job Summary: We are seeking a highly skilled and dedicated Mainframe DB2 Systems Programmer to join our core infrastructure team. This critical role involves the installation, maintenance, and upgrade of IBM DB2 for z/OS subsystems, ensuring their optimal performance, availability, and stability. The successful candidate will work closely with DB2 DBAs, z/OS Systems Programmers, application development teams, and operations staff to provide expert-level support for our enterprise-wide DB2 environment.

Key Responsibilities:

- DB2 Subsystem Management:
- Plan, prepare, and execute DB2 for z/OS subsystem installations, upgrades, and migrations (e.g., from DB2 12 to DB2 13, or between Function Levels).
- Apply IBM DB2 maintenance (PTFs, APARs, SPEs) regularly using SMP/E to ensure system integrity, resolve issues, and enhance functionality.
- Configure and maintain DB2 PARMLIB, DSNZPARM, and other critical DB2 initialization parameters.
- Perform DB2 subsystem restarts (IPLs, Quiesce/Start) as required for maintenance and configuration changes.
- DB2 Tool and Utility Support:
- Install, configure, upgrade, and maintain IBM DB2 utilities (e.g., REORG, RUNSTATS, COPY, LOAD, UNLOAD).
- Install and support various Independent Software Vendor (ISV) tools for DB2 (e.g., BMC DB2 tools, Broadcom/CA DB2 tools, IBM DB2 Admin Tool, IBM Data Studio, etc.) used for performance monitoring, backup/recovery, administration, and development.
- Troubleshoot issues related to DB2 utilities and ISV tools.
- Performance Monitoring and Tuning:
- Monitor DB2 subsystem health, performance, and resource utilization using tools like Omegamon for DB2, DB2 PM, SMF, RMF, and other performance monitors.
- Analyze performance data to identify bottlenecks within DB2 and recommend tuning improvements at the subsystem, buffer pool, and thread level.
- Assist DBAs and application teams in optimizing SQL queries and application performance.
- Problem Diagnosis and Resolution:
- Provide expert-level support for DB2 incidents, including problem determination, diagnosis (e.g., analyzing dumps, logs, traces), and resolution in a timely manner.
- Collaborate with IBM support and ISV vendors to resolve complex issues.
- Participate in on-call rotation for 24/7 support of critical DB2 environments.
- Collaboration and Coordination:
- Work closely with DB2 DBAs to understand their requirements, provide technical guidance, and ensure the smooth operation of database environments.
- Collaborate with z/OS Systems Programmers on shared resources, system-level issues, and overall mainframe health.
- Liaise with application development teams for DB2-related changes, new application deployments, and problem resolution.
- Coordinate with mainframe operations for scheduled maintenance and incident response.
- Automation and Scripting:
- Develop and maintain JCL, REXX, CLISTs, and other scripts for DB2 administration, monitoring, and automation tasks.
- Disaster Recovery and Business Continuity:
- Assist in the planning, testing, and execution of disaster recovery procedures for DB2 subsystems.
- Ensure the high availability and recoverability of critical DB2 environments.
- Documentation and Best Practices:
- Create and maintain comprehensive documentation for DB2 installations, configurations, operational procedures, and troubleshooting guides.
- Adhere to ITIL best practices for change management, incident management, and problem management within the DB2 domain.
- Security and Compliance:
- Implement and enforce security best practices within DB2, working with security administrators (RACF/ACF2/Top Secret) to define and manage DB2 security profiles.
- Ensure compliance with internal security policies and external regulatory requirements for DB2 data.

Required Skills and Experience:

- 5-8 years of hands-on experience as a Mainframe DB2 Systems Programmer.
- In-depth knowledge and hands-on experience with IBM DB2 for z/OS installation, configuration, maintenance, and migration (preferably including recent versions like DB2 12 or 13).
- Strong proficiency in JCL, TSO/ISPF, and SMP/E.
- Extensive experience with IBM DB2 utilities (COPY, RECOVER, REORG, RUNSTATS, LOAD, UNLOAD).
- Proven experience with installation and support of leading DB2 ISV tools (e.g., BMC DB2 tools, Broadcom/CA DB2 tools, IBM DB2 Admin Tool, Omegamon for DB2).
- Solid understanding of DB2 architecture, data sharing, buffer pool management, and logging.
- Experience with DB2 performance monitoring, tuning, and problem diagnosis (e.g., reading traces, interpreting DSNZPARM settings).
- Ability to read and interpret DB2 dumps for problem determination.
- Proficiency in REXX, CLISTs, or other scripting languages for automation.
- Familiarity with z/OS operating system fundamentals, including JES2/JES3, SMS, VSAM.
- Excellent analytical, problem-solving, and troubleshooting skills.
- Strong communication (written and verbal) and interpersonal skills, with the ability to collaborate effectively with various teams.
- Ability to work independently and manage multiple priorities in a dynamic environment.

Desired Skills and Experience (Plus Points):

- Experience with Parallel Sysplex and DB2 Data Sharing environments.
- Knowledge of IBM MQ for z/OS, IMS, or CICS connectivity with DB2.
- Experience with DB2 DDF (Distributed Data Facility) and remote connectivity.
- Certifications related to DB2 for z/OS.