Mainframe z/OS Systems Programmer

2 days ago


Hyderabad, Telangana, India Orangepeople Full time ₹ 12,00,000 - ₹ 36,00,000 per year

Join a team where your expertise as a z/OS System Administrator makes a real impact In this critical role, youll help maintain and optimize a robust Mainframe environment, leveraging deep technical knowledge of z/OS systems. With hands-on experience in hardware refresh projects and a passion for delivering service excellence, you'll be at the forefront of keeping systems running smoothly and efficiently.

Years of experience required: +15 years.

Responsibilities:

  • Operating System Knowledge:

  • Deep mastery of z/OS architecture, including IPL procedures, JES2/JES3 configurations, Sysplex management, SMF data collection, and parmlib customization.

  • Programming Skills:

  • Proficient in writing and debugging system-level routines and automation:

  • Assembler for exits and control blocks.
  • REXX for scripting and batch utilities.
  • JCL for job submission, parameterization, and workflow control.

  • System Administration:

  • Managing hardware and logical resources across LPARs:

  • DASD and tape allocation via HCD/HCM.
  • LPAR configuration in HMC.
  • Security administration using RACF or equivalent.

  • Problem-Solving Skills:

  • Analytical troubleshooting of abends, storage hangs, and performance anomalies using:

  • Dump analysis with IPCS.
  • SLIP and trace tools.
  • System logs and console messages.

  • Backup and Recovery:

  • Ensuring data integrity and swift recovery with:

  • DFSMShsm policies and recall management
  • FDR/ABR for high-speed backups
  • FlashCopy or virtual tape replication for near-instant restores

  • Performance Monitoring:

  • Optimizing system throughput and response times utilizing:

  • RMF and SMF report analysis.
  • OMEGAMON or BMC MainView dashboards.
  • WLM classification and tuning.

  • Networking Knowledge:

  • Configuring and supporting mainframe connectivity:

  • VTAM and SNA definitions.
  • TCP/IP stack on z/OS.
  • OSA adapter and Coupling Facility communication.

  • Documentation and Communication:

  • Producing clear system diagrams, runbooks, and upgrade plans while collaborating with application teams, storage, networking, and security groups.

  • Continuous Learning:

  • Staying current on IBM Redbooks, z/OS release notes, firmware updates, and attending vendor training (IBM, Broadcom, BMC) or industry conferences.

  • Software Maintenance & Upgrade Tools:

  • Executing OS and product upgrades with industry-standard utilities.

  • SMP/E for PTF, APAR, and deliverable management.
  • z/OSMF workflows for streamlined maintenance.
  • Broadcom (e.g., Topaz), IBM, and BMC tooling for fix management and compliance reporting.

  • Project Management & Hardware Refresh:

  • Planning and leading hardware refreshes, feature activations, and migrations with minimal downtime, including IPL scheduling, vendor coordination, and change-control governance.

Soft Skills:

  • Communication & Collaboration:

  • Clear documentation of system changes, configurations, and procedures.

  • Cross-functional teamwork with developers, DBAs, and network engineers.
  • Stakeholder engagement to explain technical issues in business terms.

  • Analytical Thinking & Problem Solving:

  • Root cause analysis for system outages and performance issues.

  • Pattern recognition across logs, dumps, and metrics.
  • Decision-making under pressure, especially during incident response.

  • Adaptability & Continuous Learning:

  • Staying current with z/OS updates, SMP/E practices, and IBM tools.

  • Embracing modernization trends like Zowe, z/OSMF, and hybrid cloud integration.
  • Learning new scripting languages (REXX, CLIST) and automation tools.

  • Patience & Resilience:

  • Handling legacy systems with limited documentation.

  • Managing long upgrade cycles and complex migrations.
  • Remaining calm during critical system failures or audits..

  • Attention to Detail:

  • Precision in JCL scripting, IPL procedures, and system configurations.

  • Vigilance in security settings, RACF profiles, and access controls.
  • Thoroughness in change management and rollback planning.

  • Mentorship & Knowledge Sharing:

  • Training junior staff on mainframe fundamentals.

  • Creating internal guides and cheat sheets for recurring tasks.
  • Participating in user groups like IBM SHARE or local meetups.


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