We are seeking an accomplished and innovative Mainframe z/OS Systems Programmer(IC4) to drive strategy, architecture, and hands-on excellence within our enterprise mainframe environments. In this senior individual contributor role, you will be a technical authority, leading the design, integration, and optimization of z/OS systems and related technologies across complex, high-availability environments. You will shape roadmap decisions, mentor team members, and serve as a strategic advisor to technical leadership and key customers.

Key Responsibilities :

- Provide technical leadership and strategic direction for the design, implementation, migration, and continuous improvement of enterprise-scale z/OS environments and their subsystems.
- Serve as a domain expert for critical mainframe technologies: influencing architecture, security, automation, high availability/disaster recovery, and performance strategies.
- Lead and oversee complex system and software upgrades, integrations, and conversions, ensuring zero/mínimal downtime for mission-critical workloads.
- Architect and optimize storage management, system tuning, and capacity planning, proactively identifying performance bottlenecks and inefficiencies.
- Define and enforce enterprise-wide standards, processes, and policies for mainframe system management in alignment with business and compliance objectives.
- Mentor and coach other systems programmers, fostering technical growth and succession planning within the organization.
- Shape and execute automation, monitoring, and recovery strategies-using advanced scripting (JCL, Assembler, CLIST) and orchestration tools.
- Champion the adoption of new tools, technologies,



and innovative practices within the mainframe ecosystem.
- Lead root cause analysis for major system incidents, providing executive-level summaries and continuous improvement recommendations.
- Responsible for all the IBM operating systems and all 3rd party software running on these mainframes are kept at supported levels. Perform upgrades as necessary.
- Act as a senior point of contact for complex customer escalations, project planning, and external vendor/partner engagements.

Required Technical and Professional Expertise :

- Extensive, expert-level knowledge of z/OS operating system architecture, security (including RACF), storage, zVM’s and parallel sysplex/GDPS environments.
- Demonstrated experience leading major z/OS upgrades, migrations, and large-scale software deployments using SMP/E.
- Working knowledge of the IBM virtual Tape system and Unix System Services
- Advanced scripting abilities (JCL, REXX, OPS/REXX, CLIST, Modify Assembler EXITS); strong experience automating enterprise mainframe operations.
- In-depth experience architecting and supporting critical subsystems: JES2, DB2 (advanced utilities, ZPARMS, DDF), CICS (installation, tuning, upgrades).
- Mastery in tuning, performance analysis, and capacity planning using enterprise tools (RMF, SMF, SAS, MXG, Omegamon, Strobe, IBM Products).




- Proven leadership implementing and supporting ISV/OEM products for automation, scheduling, and tape management (e.g., Netview, BMC, CA-7, SA z/OS, Tivoli Suite etc).
- Continually research, evaluate, recommend, develop, and implement new technologies, processes, and industry best practices to improve reliability and cost-effectiveness.
- Expertise designing and executing robust disaster recovery and business continuity plans, including backup/restore and failover testing.
- Significant experience with mainframe hardware planning (LPARs, HMC) and UNIX System Services (USS) management.
- Track record of successfully addressing skill/technology gaps-mentoring, training, and shaping technical direction.
- Hardware upgrades support, including HCD work to support the I/O subsystem setting.
- Strong communication, executive presence, and ability to convey complex technical concepts to senior leadership, business partners, and customers.
- Participate in audits, both internal and external, by providing any required information and quickly responding to any corrective actions.
- Provide on call support for mainframe system related issues.
- Involved with the Business Recovery for the Mainframe systems, ensuring that the systems are restored correctly and quickly.

Education & Experience :

- Bachelor’s/master’s degree in computer science, Information Technology, or related field (or equivalent experience).
- 8-10 years of experience in mainframe z/OS systems programming-with substantial leadership and architecture responsibilities.
- Relevant industry certifications are an advantage.

📌 Principal Mainframe Z/os System Programmer (Bengaluru)
🏢 Oracle
📍 Bengaluru